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| 1 2 | Tune up Procedure | Parts List/Tune Up Info | March 25 2019 | confidential | ||||
| 1 2 | Cover Letter(s) | March 25 2019 | ||||||
| 1 2 | Cover Letter(s) | March 25 2019 | ||||||
| 1 2 | External Photos | March 25 2019 | ||||||
| 1 2 | Part List | Parts List/Tune Up Info | March 25 2019 | confidential | ||||
| 1 2 | RF Exposure Info | March 25 2019 | ||||||
| 1 2 | Test Report | March 25 2019 |
| 1 2 | User Manual | Users Manual | 2.20 MiB | March 25 2019 |
GPS 175/GNX 375 Pilot's Guide 2019 Garmin International, Inc., or its subsidiaries All Rights Reserved Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited. This manual reflects the operation of system software v2.00. Some differences in operation may be observed when comparing the information in this manual to later software versions. All other marks and logos are property of their respective owners. All rights reserved. Garmin and SafeTaxi are registered trademarks of Garmin International or its subsidiaries. Connext, Garmin Pilot, and Smart Airspace are trademarks of Garmin International or its subsidiaries. These trademarks may not be used without the express permission of Garmin. The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Garmin is under license. Other trademarks and trade names are those of their respective owners. 2019 SD is a registered trademark of SD-3C, LLC. All rights reserved. The term Wi-Fi is a registered trademark of the Wi-Fi Alliance. For information regarding the Aviation Limited Warranty, refer to Garmins website. For aviation product support, visit flyGarmin.com. SOFTWARE LICENSE AGREEMENT BY USING THE DEVICE, COMPONENT OR SYSTEM MANUFACTURED OR SOLD BY GARMIN
("THE GARMIN PRODUCT"), YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin Ltd. and its subsidiaries ("Garmin") grants you a limited license to use the software embedded in the Garmin Product (the "Software") in binary executable form in the normal operation of the Garmin Product. Title, ownership rights, and intellectual property rights in and to the Software remain with Garmin and/or its third-party providers. You acknowledge that the Software is the property of Garmin and/or its third-party providers and is protected under the United States of America copyright laws and international copyright treaties. You further acknowledge that the structure, organization, and code of the Software are valuable trade secrets of Garmin and/or its third-party providers and that the Software in source code form remains a valuable trade secret of Garmin and/or its third-party providers. You agree not to reproduce, decompile, disassemble, modify, reverse assemble, reverse engineer, or reduce to human readable form the Software or any part thereof or create any derivative works based on the Software. You agree not to export or re-export the Software to any country in violation of the export control laws of the United States of America. Table of Contents 1 SYSTEM AT A GLANCE ..................................................................................................... 1-1 Overview ...................................................................................................................................................1-2 1.1 Display Layout ........................................................................................... 1-3 1.2 Unit Functions .......................................................................................... 1-4 Pilot Interface ........................................................................................................................................1-5 1.3 Unit Power ................................................................................................ 1-5 1.3.1 Instrument Test .................................................................................. 1-5 1.3.2 Power Off .......................................................................................... 1-5 1.4 SD Card Slot ............................................................................................. 1-6 1.5 Touchscreen ............................................................................................. 1-7 1.5.1 Keys ................................................................................................... 1-8 1.5.2 Menus ................................................................................................ 1-9 1.5.3 Tabs ................................................................................................. 1-10 1.5.4 Keypads ........................................................................................... 1-10 1.6 Control Knobs ........................................................................................ 1-11 1.6.1 Knob Function Indicators .................................................................. 1-11 1.6.2 Screen Captures ............................................................................... 1-12 1.7 Color Conventions .................................................................................. 1-13 Compatible Equipment ..................................................................................................................1-14 1.8 Line Replaceable Units
.......................................................................... 1-14 1.8.1 ADC & AHRS .................................................................................... 1-15 1.8.2 Altitude Encoder .............................................................................. 1-15 1.8.3 Connext Services .............................................................................. 1-16 1.8.4 Traffic .............................................................................................. 1-16 2 GET STARTED ........................................................................................................................ 2-1 Databases .................................................................................................................................................2-3 2.1 Database Effective Cycles .......................................................................... 2-4 2.2 Active and Standby Databases .................................................................. 2-5 2.3 Manual Updates ....................................................................................... 2-6 2.3.1 Database Updates Page ...................................................................... 2-6 2.4 Automatic Updates ................................................................................... 2-9 2.5 Database Concierge ................................................................................ 2-10 Connectivity .........................................................................................................................................2-12 2.6 Connext Setup ........................................................................................ 2-12 2.7 Bluetooth Setup ...................................................................................... 2-13 2.7.1 Enabling Bluetooth ........................................................................... 2-13 2.7.2 Managing Paired Devices .................................................................. 2-14 2.7.3 Importing a Flight Plan ..................................................................... 2-14 2.8 Wi-Fi Setup ............................................................................................. 2-15 2.8.1 Connecting to Wi-Fi ......................................................................... 2-15 XPDR ........................................................................................................................................................2-16 2.9 XPDR Setup ............................................................................................ 2-17 2.9.1 Displaying Data ................................................................................ 2-17 2.9.2 Enabling Extended Squitter Transmissions ......................................... 2-17 2.9.3 Assigning a Flight ID ......................................................................... 2-18 2.10 XPDR Modes ......................................................................................... 2-19 2.11 Squawk Code Keys ............................................................................... 2-20 2.11.1 VFR ................................................................................................ 2-20 2.11.2 IDENT ............................................................................................ 2-20 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide i Table of Contents 2.12 Remote Control .................................................................................... 2-22 2.13 XPDR Alert ............................................................................................ 2-22 Pilot Settings ........................................................................................................................................2-23 2.14 CDI Scale .............................................................................................. 2-23 2.14.1 Horizontal Alarm Limits .................................................................. 2-24 2.14.2 CDI On Screen ................................................................................ 2-24 2.15 Airport Runway Criteria ........................................................................ 2-25 2.15.1 Runway Surface ............................................................................. 2-25 2.15.2 Minimum Runway Length .............................................................. 2-25 2.16 Clocks & Timers .................................................................................... 2-26 2.16.1 Timers ............................................................................................ 2-26 2.16.2 Clock ............................................................................................. 2-26 2.17 Page Shortcuts ...................................................................................... 2-27 2.18 Alerts Settings ....................................................................................... 2-28 2.19 Unit Selections ...................................................................................... 2-29 2.20 Display Brightness Control .................................................................... 2-30 2.20.1 Automatic Brightness Control ......................................................... 2-30 2.20.2 Manual Brightness Control ............................................................. 2-30 2.21 Scheduled Messages ............................................................................ 2-31 2.21.1 Message Types ............................................................................... 2-31 2.21.2 Modifying Scheduled Messages ...................................................... 2-31 Status Indications ..............................................................................................................................2-32 2.22 Alert Types ............................................................................................ 2-32 2.22.1 Alert Annunciations ........................................................................ 2-33 2.22.2 Pop-up Alerts ................................................................................. 2-34 2.22.3 Aural Alerts .................................................................................... 2-34 2.23 System Status Page ............................................................................... 2-35 2.24 GPS Status Page .................................................................................... 2-35 2.24.1 Circle of Uncertainty ....................................................................... 2-37 2.24.2 SBAS Providers ............................................................................... 2-38 2.24.3 GPS Status Annunciations .............................................................. 2-38 2.24.4 GPS Alerts ...................................................................................... 2-39 2.25 ADS-B Status Page ................................................................................ 2-40 Logs ...........................................................................................................................................................2-41 2.26 Exporting to SD Card ........................................................................... 2-41 3 NAVIGATION ......................................................................................................................... 3-1 Map ..............................................................................................................................................................3-3 3.1 Map Interactions ....................................................................................... 3-6 3.1.1 Basic Interactions ................................................................................ 3-6 3.1.2 Graphical Flight Plan Editing ............................................................... 3-8 3.2 Map Setup .............................................................................................. 3-12 3.2.1 Configure User Fields ....................................................................... 3-13 3.2.2 Map Orientation ............................................................................... 3-14 3.2.3 North Up Above ............................................................................... 3-15 3.2.4 Visual Approach ............................................................................... 3-15 3.2.5 TOPO Scale ...................................................................................... 3-15 3.2.6 Range Ring ....................................................................................... 3-16 3.2.7 Track Vector ..................................................................................... 3-16 3.2.8 Ahead View ..................................................................................... 3-16 ii GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Table of Contents 3.2.9 Map Detail ....................................................................................... 3-17 3.3 Map Overlays .......................................................................................... 3-19 3.3.1 Overlay Controls ............................................................................... 3-19 3.3.2 Overlay Status Icons ......................................................................... 3-22 3.3.3 Smart Airspace ................................................................................. 3-23 3.3.4 SafeTaxi ........................................................................................... 3-24 Active Flight Plan ..............................................................................................................................3-26 3.4 Edit Data Fields ....................................................................................... 3-28 3.5 Collapse All Airways ................................................................................ 3-28 3.6 Parallel Track ........................................................................................... 3-29 3.7 Flight Plan Catalog .................................................................................. 3-30 3.7.1 Delete a Flight Plan ........................................................................... 3-31 3.8 Creating a Flight Plan .............................................................................. 3-32 3.9 Waypoint Options ................................................................................... 3-33 3.10 Active Flight Plan Map Overlay .............................................................. 3-34 3.11 GPS NAV Status Indicator Key ............................................................... 3-35 Direct To .................................................................................................................................................3-36 Waypoints ..............................................................................................................................................3-39 3.12 Waypoint Information ........................................................................... 3-39 3.13 Waypoint Selection ............................................................................... 3-42 3.13.1 Waypoint Autofill ........................................................................... 3-42 3.13.2 Search Tabs .................................................................................... 3-43 3.14 Create User Waypoints ......................................................................... 3-45 3.14.1 Define Waypoint Criteria ................................................................ 3-46 3.14.2 Edit an Existing User Waypoint ....................................................... 3-48 3.14.3 Import User Waypoints ................................................................... 3-48 3.15 Nearest ................................................................................................. 3-49 Procedures ............................................................................................................................................3-51 3.16 Basic Operations ................................................................................... 3-52 3.16.1 GPS Flight Phase Annunciations ...................................................... 3-52 4 PLANNING .............................................................................................................................. 4-1 Vertical Calculator ..............................................................................................................................4-3 4.1 VCALC Page ............................................................................................. 4-3 4.2 VCALC Setup ............................................................................................ 4-4 Fuel Planning ..........................................................................................................................................4-5 4.3 Fuel Planning Page .................................................................................... 4-5 4.3.1 Fuel Planning Modes .......................................................................... 4-5 4.3.2 Computing Fuel Statistics ................................................................... 4-7 DALT/TAS/Wind Calculator ............................................................................................................4-8 4.4 DALT/TAS/Wind Page ................................................................................ 4-8 4.4.1 Editing Input Data .............................................................................. 4-8 4.4.2 Computing DALT/TAS/Wind Statistics ............................................... 4-10 RAIM Prediction .................................................................................................................................4-11 4.5 RAIM Prediction Page .............................................................................. 4-11 4.5.1 Calculating RAIM Status ................................................................... 4-12 4.5.2 RAIM Status Indications .................................................................... 4-12 5 HAZARD AWARENESS ..................................................................................................... 5-1 Weather Awareness ............................................................................................................................5-3 5.1 Data Transmission Limitations ................................................................... 5-3 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide iii Table of Contents 5.1.1 Line of Sight Reception ....................................................................... 5-3 5.1.2 Per FAA TSO-C157b ........................................................................... 5-4 5.1.3 NOTAM 30-Day Limitation ................................................................. 5-4 5.2 Weather Display ........................................................................................ 5-5 5.3 Weather Setup .......................................................................................... 5-7 5.4 Weather Products ..................................................................................... 5-8 5.4.1 Product Age ....................................................................................... 5-9 5.4.2 Legends ........................................................................................... 5-10 5.4.3 FIS-B NEXRAD .................................................................................. 5-11 5.4.4 METARs and TAFs ............................................................................ 5-13 5.4.5 AIRMETS .......................................................................................... 5-14 5.4.6 SIGMETS .......................................................................................... 5-15 5.4.7 PIREPs .............................................................................................. 5-15 5.4.8 Winds Aloft ...................................................................................... 5-16 5.4.9 TFRs ................................................................................................. 5-16 5.5 Raw Text Reports .................................................................................... 5-17 5.6 FIS-B Ground Reception Status ................................................................ 5-17 Traffic Awareness .............................................................................................................................5-18 5.7 Traffic Applications ................................................................................. 5-18 5.8 Traffic Display ......................................................................................... 5-19 5.9 Traffic Interactions .................................................................................. 5-22 5.10 Traffic Setup ......................................................................................... 5-23 5.10.1 Traffic Test ..................................................................................... 5-24 5.10.2 Motion Vectors .............................................................................. 5-24 5.10.3 Altitude Filtering ............................................................................. 5-25 5.11 Status Annunciations ............................................................................ 5-25 5.12 Traffic Alerting ...................................................................................... 5-26 Terrain Awareness ............................................................................................................................5-27 5.13 Terrain Configurations .......................................................................... 5-27 5.13.1 GPS Altitude for Terrain .................................................................. 5-27 5.14 Database Limitations ............................................................................. 5-29 5.15 Terrain Display ...................................................................................... 5-30 5.16 Terrain Setup ........................................................................................ 5-32 5.17 Terrain Proximity ................................................................................... 5-33 5.17.1 Terrain Elevation Depictions ............................................................ 5-34 5.17.2 Obstacle Elevation Depictions ......................................................... 5-35 5.18 Terrain Alerting ..................................................................................... 5-37 5.18.1 Alert Types ..................................................................................... 5-37 5.18.2 Alerting Thresholds ........................................................................ 5-38 5.18.3 Inhibiting PDA & Terrain-FLTA Alerts ............................................... 5-39 5.18.4 PDA & Terrain-FLTA Alerts .............................................................. 5-40 6 MESSAGES .............................................................................................................................. 6-1 Advisory Messages ..............................................................................................................................6-2 6.1 Message Key ............................................................................................. 6-2 6.2 Airspace Advisories ................................................................................... 6-3 6.3 Database Advisories .................................................................................. 6-4 6.4 Flight Plan Advisories ................................................................................ 6-5 6.5 GPS/WAAS Advisories ............................................................................... 6-6 6.6 Navigation Advisories ................................................................................ 6-8 iv GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Table of Contents 6.7 System Hardware Advisories ..................................................................... 6-9 6.8 Terrain Advisories .................................................................................... 6-11 6.9 Traffic System Advisories ......................................................................... 6-12 6.10 VCALC Advisories ................................................................................. 6-13 6.11 Waypoint Advisories ............................................................................. 6-13 7 QUALIFICATION .................................................................................................................. 7-1 7.1 Glove Qualification ................................................................................... 7-1 8 GLOSSARY ............................................................................................................................... 8-1 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide v INTENTIONALLY LEFT BLANK vi GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Warnings, Cautions, and Notes WARNING DO NOT USE TERRAIN AVOIDANCE DISPLAYS AS THE SOLE SOURCE OF INFORMATION FOR MAINTAINING SEPARATION FROM TERRAIN AND OBSTACLES. GARMIN OBTAINS TERRAIN AND OBSTACLE DATA FROM THIRD PARTY SOURCES AND CANNOT INDEPENDENTLY VERIFY THE ACCURACY OF THE INFORMATION. WARNING DO NOT RELY SOLELY UPON TERRAIN PROXIMITY DATA FOR TERRAIN AVOIDANCE. TERRAIN PROXIMITY IS NOT A CERTIFIED TERRAIN AWARENESS SYSTEM. IT IS AN AID TO SITUATIONAL AWARENESS ONLY. USING TERRAIN PROXIMITY DATA DOES NOT UNDER ANY CIRCUMSTANCES OR CONDITIONS RELIEVE THE PILOTS RESPONSIBILITY TO SEE AND AVOID TERRAIN OR OBSTACLES. WARNING ALWAYS REFER TO CURRENT AERONAUTICAL CHARTS AND NOTAMS FOR VERIFICATION OF DISPLAYED AERONAUTICAL INFORMATION. DISPLAYED AERONAUTICAL DATA MAY NOT INCORPORATE THE LATEST NOTAM INFORMATION. WARNING NEVER USE GPS ALTITUDE FOR VERTICAL NAVIGATION. THE ALTITUDE CALCULATED BY GPS RECEIVERS IS GEOMETRIC HEIGHT ABOVE MEAN SEA LEVEL AND COULD VARY SIGNIFICANTLY FROM THE ALTITUDE DISPLAYED BY PRESSURE ALTIMETERS (E.G., THE OUTPUT FROM THE GDC 74A/B AIR DATA COMPUTER) OR OTHER ALTIMETERS IN THE AIRCRAFT. ALWAYS REFER TO THE PRESSURE ALTIMETERS IN THE AIRCRAFT FOR CURRENT PRESSURE ALTITUDE. WARNING NEVER USE EXPIRED DATABASES. UPDATE DATABASES REGULARLY TO ENSURE CURRENCY. USE OUT OF DATE DATABASE INFORMATION AT YOUR OWN RISK. WARNING NEVER USE BASEMAP INFORMATION (LAND AND WATER DATA) AS THE SOLE MEANS OF NAVIGATION. BASEMAP DATA IS INTENDED ONLY TO SUPPLEMENT OTHER APPROVED NAVIGATION DATA SOURCES AND SHOULD BE CONSIDERED ONLY AN AID TO ENHANCE SITUATIONAL AWARENESS. WARNING DO NOT RELY SOLELY UPON THE DISPLAY OF TRAFFIC INFORMATION TO ACCURATELY DEPICT ALL OF THE TRAFFIC WITHIN RANGE OF THE AIRCRAFT. DUE TO LACK OF EQUIPMENT, POOR SIGNAL RECEPTION, AND/OR INACCURATE INFORMATION FROM AIRCRAFT OR GROUND STATIONS, TRAFFIC MAY BE PRESENT THAT IS NOT REPRESENTED ON THE DISPLAY. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide vii Warnings, Cautions, and Notes WARNING NEVER USE DATALINK WEATHER INFORMATION FOR MANEUVERING IN, NEAR, OR AROUND AREAS OF HAZARDOUS WEATHER. INFORMATION CONTAINED WITHIN DATALINK WEATHER PRODUCTS MAY NOT ACCURATELY DEPICT CURRENT WEATHER CONDITIONS. WARNING DO NOT USE THE INDICATED DATALINK WEATHER PRODUCT AGE TO DETERMINE THE AGE OF THE WEATHER INFORMATION SHOWN BY THE DATALINK WEATHER PRODUCT. DUE TO TIME DELAYS INHERENT IN GATHERING AND PROCESSING WEATHER DATA FOR DATALINK TRANSMISSION, THE WEATHER INFORMATION SHOWN BY THE DATALINK WEATHER PRODUCT MAY BE OLDER THAN THE INDICATED WEATHER PRODUCT AGE. WARNING ALWAYS REFER TO CURRENT AERONAUTICAL CHARTS FOR APPROPRIATE MINIMUM CLEARANCE ALTITUDES. THE DISPLAYED MSAs ARE ONLY ADVISORY IN NATURE AND SHOULD NOT BE RELIED UPON AS THE SOLE SOURCE OF OBSTACLE AND TERRAIN AVOIDANCE INFORMATION. WARNING DO NOT USE GPS TO NAVIGATE TO ANY ACTIVE WAYPOINT IDENTIFIED AS A NON WGS84 WPT BY A SYSTEM MESSAGE. NON WGS84 WPT WAYPOINTS ARE DERIVED FROM AN UNKNOWN MAP REFERENCE DATUM THAT MAY BE INCOMPATIBLE WITH THE MAP REFERENCE DATUM USED BY GPS (KNOWN AS WGS84) AND MAY BE POSITIONED IN ERROR AS DISPLAYED. WARNING DO NOT RELY SOLELY UPON THE DISPLAY OF TRAFFIC INFORMATION FOR COLLISION AVOIDANCE MANEUVERING. THE TRAFFIC DISPLAY DOES NOT PROVIDE COLLISION AVOIDANCE RESOLUTION ADVISORIES AND DOES NOT UNDER ANY CIRCUMSTANCES OR CONDITIONS RELIEVE THE PILOTS RESPONSIBILITY TO SEE AND AVOID OTHER AIRCRAFT. WARNING DO NOT RELY ON THE ACCURACY OF ATTITUDE AND HEADING INDICATIONS IN GEOGRAPHIC AREAS WHERE VARIATION IN THE EARTHS MAGNETIC FIELD EXISTS. THIS INCLUDES: NORTH OF 72 NORTH LATITUDE AT ALL LONGITUDES; SOUTH OF 70 SOUTH LATITUDE AT ALL LONGITUDES; NORTH OF 65 NORTH LATITUDE BETWEEN LONGITUDE 75 W. AND 120 W. (NORTHERN CANADA); NORTH OF 70 NORTH LATITUDE BETWEEN LONGITUDE 70 W. AND 128 W. (NORTHERN CANADA); NORTH OF 70 NORTH LATITUDE BETWEEN LONGITUDE 85 E. AND 114 E. (NORTHERN RUSSIA); SOUTH OF 55 SOUTH LATITUDE BETWEEN LONGITUDE 120 E. AND 165 E.
(REGION SOUTH OF AUSTRALIA AND NEW ZEALAND). viii GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Warnings, Cautions, and Notes WARNING DO NOT RELY SOLELY UPON DATALINK SERVICES TO PROVIDE TFR INFORMATION. ALWAYS CONFIRM TFR INFORMATION THROUGH OFFICIAL SOURCES SUCH AS FLIGHT SERVICE STATIONS OR AIR TRAFFIC CONTROL. WARNING DO NOT LEARN OPERATIONAL PROCEDURES IN THE AIR. FOR SAFETY REASONS, THOROUGHLY PRACTICE BASIC OPERATION ON THE GROUND BEFORE ACTUAL USE. WARNING REVIEW AND UNDERSTAND ALL ASPECTS OF THIS PILOTS GUIDE. DOING SO REDUCES THE RISK OF UNSAFE OPERATION. WARNING ALWAYS RESOLVE ANY DISCREPANCIES BETWEEN THE DISPLAY AND OTHER NAVIGATION SOURCES WHEN THEY OCCUR. DURING FLIGHT OPERATIONS, COMPARE DISPLAY INDICATIONS TO INFORMATION FROM OTHER NAVAIDS, VISUAL SIGHTINGS, CHARTS, AND OTHER AVAILABLE SOURCES BEFORE CONTINUING NAVIGATION. CAUTION DO NOT CLEAN DISPLAY SURFACES WITH ABRASIVE CLOTHS OR CLEANERS CONTAINING AMMONIA. THEY WILL HARM THE ANTI-REFLECTIVE COATING. CAUTION ENSURE THAT ANY UNIT REPAIRS ARE MADE BY AN AUTHORIZED GARMIN SERVICE CENTER. UNAUTHORIZED REPAIRS OR MODIFICATIONS COULD VOID BOTH THE WARRANTY AND AFFECT THE AIRWORTHINESS OF THE AIRCRAFT. NOTE All visual depictions contained within this document, including screen images of the system panel and displays, are subject to change and may not reflect the most current system and aviation databases. Depictions of equipment may differ slightly from the actual equipment. NOTE The United States government operates the Global Positioning System and is solely responsible for its accuracy and maintenance. The GPS system is subject to changes which could affect the accuracy and performance of all GPS equipment. Portions of the system utilize GPS as a precision electronic NAVAID. Therefore, as with all NAVAIDs, information presented by the system can be misused or misinterpreted and, therefore, become unsafe. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide ix Warnings, Cautions, and Notes NOTE This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE Interference from GPS repeaters operating inside nearby hangars can cause an intermittent loss of attitude and heading displays while the aircraft is on the ground. Moving the aircraft more than 100 yards away from the source of the interference should alleviate the condition. NOTE Use of polarized eye wear may cause the flight displays to appear dim or blank. NOTE This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This notice is being provided in accordance with Californias Proposition 65. If you have any questions or would like additional information, please refer to our website at www.garmin.com/prop65. NOTE Operating the system in the vicinity of metal buildings, metal structures, or electromagnetic fields can cause sensor differences that may result in nuisance miscompare annunciations during start up, shut down, or while taxiing. If one or more of the sensed values are unavailable, the annunciation indicates no comparison is possible. NOTE The system responds to a terminal procedure based on data coded within that procedure in the Navigation Database. Differences in system operation may be observed among similar types of procedures due to differences in the Navigation Database coding specific to each procedure. NOTE Do not use SafeTaxi functions as the basis for ground maneuvering. SafeTaxi functions do not comply with the requirements of AC 120-76C and are not qualified for use as an airport moving map display. SafeTaxi is to be used for orientation purposes only. x GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Warnings, Cautions, and Notes NOTE The FAA has asked Garmin to remind pilots who fly with Garmin database-dependent avionics of the following:
It is the pilots responsibility to remain familiar with all FAA regulatory and advisory guidance and information related to the use of databases in the National Airspace System.
Garmin equipment will only recognize and use databases that are obtained from Garmin or Jeppesen. Databases obtained from Garmin or Jeppesen that have a Type 2 LOA from the FAA are assured compliance with all data quality requirements (DQRs). A copy of the Type 2 LOA is available for each applicable database and can be viewed at flyGarmin.com by selecting Aviation Database Declarations.
Use of a current Garmin or Jeppesen database in your Garmin equipment is required for compliance with established FAA regulatory guidance, but does not constitute authorization to fly any and all terminal procedures that may be presented by the system. It is the pilots responsibility to operate in accordance with established AFM(S) and regulatory guidance or limitations as applicable to the pilot, the aircraft, and installed equipment. NOTE The pilot/operator must review and be familiar with Garmins database exclusion list as discussed in SAIB CE-14-04 to determine what data may be incomplete. The database exclusion list can be viewed at flyGarmin.com by selecting Database Exclusions List. NOTE The pilot/operator must have access to Garmin and Jeppesen database alerts and consider their impact on the intended aircraft operation. The database alerts can be viewed at flyGarmin.com by selecting Aviation Database Alerts. NOTE If the pilot/operator wants or needs to adjust the database, contact Garmin Product Support. NOTE Garmin requests the flight crew report any observed discrepancies related to database information. These discrepancies could come in the form of an incorrect procedure; incorrectly identified terrain, obstacles and fixes; or any other displayed item used for navigation or communication in the air or on the ground. Visit flyGarmin.com and select Aviation Data Error Report. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide xi Compliance NOTE The navigation databases used in Garmin navigation systems contain Special Procedures. Prior to flying these procedures, pilots must have specific FAA authorization, training, and possession of the corresponding current, and legitimately-sourced chart (approach plate, etc.). Inclusion of the Special Procedure in the navigation database DOES NOT imply specific FAA authorization to fly the procedure. AC 90-100A Statement of Compliance The Garmin navigational unit meets the performance and functional requirements of FAA Advisory Circular (AC) 90-100A, U.S. Terminal and En Route Area Navigation
(RNAV) Operations. xii GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 About This Guide Record of Revision REVISION DATE CHANGE DESCRIPTION 1 02/07/19 Experimental Release. The design and layout of this guide is intended to provide clear, concise sections written in the logical order of a pilots flight instrument and systems scan. Layout SECTION TITLE 1 2 3 4 5 6 7 8 System at a Glance Get Started Navigation Planning Hazard Awareness Messages Qualification Glossary Electronic Document Features Versions of this guide are saved in Adobe Acrobat and are available for download at:
garmin.com/manuals 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide xiii Reference Documentation Reference Manuals DOCUMENT P/N N/A N/A Reference Websites WEBSITE ADDRESS Aviation Limited Warranty https://www.garmin.com/en-US/legal/aviation-limited-warranty Database Concierge Go to http://www.flygarmin.com/support and select Database Management. ADS-B Academy https://www.garmin.com/us/intheair/ads-b Connext http://www.garmin.com/connext xiv GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 1 System at a Glance System at a Glance OVERVIEW 1.1 1.2 PILOT INTERFACE 1.3 Display Layout .......................................................................................1-3 Unit Functions ......................................................................................1-4 1.4 1.5 1.6 1.3.1 1.3.2 Unit Power ............................................................................................1-5 Instrument Test ..............................................................................1-5 Power Off.......................................................................................1-5 SD Card Slot..........................................................................................1-6 Touchscreen ..........................................................................................1-7 1.5.1 Keys ...............................................................................................1-8 1.5.2 Menus............................................................................................1-9 1.5.3 Tabs .............................................................................................1-10 Keypads .......................................................................................1-10 1.5.4 Control Knobs .....................................................................................1-11 Knob Function Indicators ..............................................................1-11 Screen Captures ...........................................................................1-12 Color Conventions...............................................................................1-13 1.6.1 1.6.2 1.7 COMPATIBLE EQUIPMENT 1.8 Line Replaceable Units .......................................................................1-14 ADC & AHRS ................................................................................1-15 Altitude Encoder...........................................................................1-15 Connext Services ..........................................................................1-16 Traffic...........................................................................................1-16 1.8.1 1.8.2 1.8.3 1.8.4 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-1 System at a Glance Overview The GPS 175 and GNX 375 are the first 2 by 6.25 panel mount navigators to employ full color capacitive touchscreen technology. The GPS 175 is a TSO-C146e compliant GPS/WAAS navigator with en route, terminal, and precision/non-precision approach capabilities. The GNX 375 combines the functionality of the GPS 175 with a TSO-C112e (Level 2els, Class 1) compliant mode S transponder. Each unit is Bluetooth compatible, providing flight plan, traffic, weather, and position data to an available portable electronic device. GPS 175 NAVIGATOR TSO-C146e compliant GPS/WAAS navigator and internal GPS source TSO-C195b (Class B1, B3, B5, B7) compliant with an active ADS-B In source Certified compatible with ADS-B Out 2020 mandate GNX 375 NAVIGATOR WITH TRANSPONDER TSO-C88b compliant automatic pressure altitude reporting equipment TSO-C146e compliant GPS/WAAS navigator TSO-C112e (Level 2els, Class 1) compliant mode S transponder TSO-C154c (Class A1S) compliant 1090/UAT receiver TSO-C157b (Class 1) compliant FIS-B equipment uplink TSO-C166b compliant ADS-B Out 1090 MHz extended squitter TSO-C195b (Class B1, B3, B5, B7, C1, C2, C3, C5, C7) compliant with an active ADS-B In source 1-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 1.1 Display Layout System at a Glance 2 3 4 5 6 Bezel Includes the power key, mechanical knobs, photocell, and SD card slot. Ledges provide hand stability when performing data entry and making selections. Touchscreen Multi-touch color display provides controls for unit operation. Photocell Measures cockpit ambient light level to automatically adjust display brightness for day and night. SD Card Slot Interface for loading database, exporting log files, and updating software. Compatibility with Flight Stream 510 allows wireless database transfer from the Garmin Pilot app via Database Concierge. Power/Home Key Powers the unit on or off and provides direct access to the Home page. Inner & Outer Knobs Multipurpose dual concentric knob allows data entry, list scrolling, map range control, and page navigation. 1 1 2 3 4 5 6 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-3 System at a Glance 1.2 Unit Functions GPS 175 NAVIGATOR Moving Map Traffic [1]
Terrain Flight Plan Graphical Flight Planning FIS-B Weather Display [1] [2]
Waypoint Information Terrain Avoidance System Advisories Scheduled Messages Clock CDI Internal GPS Receiver Built-in Bluetooth ADS-B In Traffic Display [1] [2]
Database Concierge Access [3]
GNX 375 NAVIGATOR W/TRANSPONDER Moving Map Traffic Terrain Flight Plan Graphical Flight Planning FIS-B Weather Receiver & Display[2]
Waypoint Information Terrain Avoidance System Advisories Scheduled Messages Clock CDI Internal GPS Receiver Built-in Bluetooth ADS-B In Traffic Receiver & Display
[2]
ADS-B Out on 1090 MHz Extended Squitter Mode S Transponder Database Concierge Access [3]
[1]
[2]
[3]
Function availability dependent upon aircraft interfaces or enablement. ADS-B In via 1090 MHz (traffic) and 978 MHz UAT (traffic and weather). Requires Wi-Fi connection via Flight Stream 510. 1-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 System at a Glance Pilot Interface 1.3 Unit Power The unit receives power directly from the aircrafts electrical system. Upon power-up, the bezel key backlight momentarily illuminates. System failure annunciations typically disappear within the first 30 seconds after power-up. The start-up screen presents the unit software versions, the name and status of all installed databases, and the Database Updates page access key. These features are available only at power up. Tapping Continue advances to the Instrument Test page. If an instrument remains flagged after one minute, check the status of the associated LRU, then contact a Garmin dealer for support. 1.3.1 Instrument Test To ensure safe operation, continuous built-in test features exercise the units processor, memory, external inputs, and outputs. The Instrument Test page displays the results of all external equipment checks performed by the unit. Review this list to ensure that all CDI outputs and other displayed data are correct for the connected equipment. 1.3.2 Power Off WARNING NEVER ATTEMPT TO POWER OFF THE UNIT WHILE AIRBORNE UNLESS OPERATIONAL PROCEDURES DICTATE. Pushing and holding the Power key for 0.5 seconds initiates the power off sequence. Shutdown occurs once the timer reaches zero. Power off annunciation temporarily replaces the knob function indicator. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-5 System at a Glance 1.4 SD Card Slot NOTE Do not remove or insert an SD card while in flight. Always verify the system is powered off before inserting or removing an SD card. The navigator requires an SD card for the following tasks. Exporting data logs Capturing screen images Upgrading software Saving system configurations Enabling Flight Stream connectivity Updating databases INSERT AN SD CARD When inserting an SD card:
Verify the slot is empty. 1. 2. Hold card such that label faces left edge of display screen. 3. Ensure back edge of card is flush with display bezel after insertion. EJECT AN SD CARD Release the spring latch by pressing lightly on the back edge of card. 1-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 1.5 Touchscreen System at a Glance TAP TAP AND HOLD SWIPE FLICK GESTURES Touching the screen briefly with a single finger. Use this gesture for:
Opening a page or menu Activating a command key or data entry field Displaying map feature information Selecting an option within an application Certain momentary controls (e.g., directional arrow keys) provide a secondary tap and hold function. Tap the key and hold your finger in place until the desired action occurs. Use this gesture for:
Scrolling with arrow keys Increasing/decreasing values continuously A smooth motion that involves touching an object, then sliding your finger across the screen and then lifting up. Use this gesture for:
Accessing multiple panes (right or left swipes) Viewing and scrolling lists Panning across a map display Swiping the screen in a quick upward or downward motion. Information moves at a fast speed, then slows to a stop. Use this gesture for:
Scrolling an item list PINCH & STRETCH Touch any map with two fingers at the same time, then bring the fingers close together (pinch) or spread them apart (stretch). Just remember: stretch to zoom in and pinch to zoom out. Use this gesture for:
Magnifying map features 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-7 System at a Glance 1.5.1 Keys COMMON COMMANDS Open the system messages list. A flashing icon indicates unread messages. Cancel an active function without inputting data. Open a context menu. Input a specified value. Return to the previous page. Select the corresponding item (e.g., database update). A checkmark confirms selection. FUNCTION KEYS On Off Toggle keys turn a specific function on or off. The current state of the function is indicated below the key label. PAGE ICONS Tapping one of these icons opens the corresponding page. Menu pages provide additional icons for accessing functions on subpages. 1-8 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 System at a Glance 1.5.2 Menus Menus group related controls into an expandable pane, allowing access to multiple functions on a single page. Depending on the number of available functions, a menu may comprise more than one pane. Multiple panes are accessible by way of swipe or inner knob turn. Active Pane POP-UP MENUS An indicator at the bottom of the menu shows which pane is active. Pop-up menus open to the default or previously selected value. Underlying Page Hidden Default or Current Setting LISTS Scrollable lists group control keys related to a single function (e.g., FIS-B Weather). When scrolling, all keys in the list are inactive. Toggle keys either enable or disable list items. In some cases, Settings or Range keys provide access to selectable setting options. Scroll Bar 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-9 System at a Glance 1.5.3 Tabs Tabs group information into individual panes. Content includes scrolling lists, data fields, function keys, or a combination of controls. Tabs are located along the left and right sides of a pane. Active Tabs Inactive Tabs Inactive Tabs 1.5.4 Keypads The navigator employs multiple keypad types to serve specific settings and functions. NUMERIC Numeric keypads open on a single pane. ALPHANUMERIC Alphanumeric keypads comprise multiple keysets that are accessible by way of swipe or key selection. Selectable Keysets An indicator shows which keyset is active. Keys a through m are active by default. Active Keyset 1-10 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 1.6 Control Knobs System at a Glance Inner and outer control knobs offer an alternative method for selecting and modifying data without the use of touch keys. Outer Inner KNOB FUNCTIONS Selecting reference controls Selecting a page shortcut Cursor placement and initial field/page selections Moving cursor forward or backward within data field Zooming Selecting reference values Inputting data Modifying individual characters in data entry field Entering current or specified numerical value Toggling Map page user fields on or off Accessing the Direct To function from the Home page Outer Knob Inner Knob
(Turn) Inner Knob
(Push) 1.6.1 Knob Function Indicators A locater bar works in conjunction with the outer knob providing quick access to the indicated page. Turning the outer knob clockwise or counter-clockwise moves the locater through displayed menu options. Active Page Available Knob Function Slot 1
(Map) Slot 3 Slot 2 Slot 1 is a dedicated Map page shortcut. Slots 2 and 3 are customizable. Selectable page options are dependent upon configuration. The active page name displays in cyan. Additional icons located to the right of the bar indicate available knob functions for the associated page (e.g., zoom, numeric entry). 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-11 System at a Glance 1.6.2 Screen Captures Save images to an SD card at any time using a screen capture. Images automatically save to the print folder in the SD card root directory. Insert an SD card into the card slot. Push and hold the control knob. 1. 2. 3. With knob depressed, push and release the Home/Power key. A camera icon momentarily shows in the annunciator bar indicating a successful screen capture. To view saved images, remove the SD card and open the print folder on a computer. 1-12 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 1.7 Color Conventions System at a Glance Red Warning conditions Operating limits Yellow Cautionary conditions Conditional operating ranges Green Safe operating conditions Normal operating ranges Engaged modes White Scales and markings Current data and values Magenta GPS data Active flight plan legs Cyan Pilot-selectable references Gray Missing or expired data Product unavailable Blue Sky Water Brown Ground 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-13 System at a Glance Compatible Equipment 1.8 Line Replaceable Units The system consists of multiple LRUs, which are installed behind the instrument panel or in a separate avionics bay. Their modular design aids system maintenance and unit replacement. Optional LRUs may include compatible equipment from either Garmin or a third party manufacturer. Some LRUs provide features that require registration and/or enablement prior to activation. SYSTEM REQUIRED LRUS GPS antenna SYSTEM OPTIONAL LRUS ADAHRS or ADC with AHRS GAD 29 adapter GAE 12 altitude encoder G3X Touch G500/G600 G500/G600 TXi GMX 200 MX 20 OPTIONAL INTERFACES GDL 88/GTX 345 ADS-B transceiver
(applicable to GPS 175 only) 1-14 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 System at a Glance 1.8.1 ADC & AHRS The ADC and AHRS sense air data and aircraft attitude for display and use by other systems. AHRS units have a magnetometer interface for determining magnetic heading. ADC units have an OAT probe interface for measuring outside air temperature. LRU DISPLAY FUNCTION GDC 74 ADC G3X G500/G600 GSU 25/73 Integrated ADAHRS GRS 77 AHRS GNX GPS GNX GNX GNX Air temperature Airspeed Altitude Vertical speed ADC Air temperature Airspeed Altitude Vertical speed AHRS Attitude Heading Rate of turn Slip/skid/yaw Attitude Heading Rate of turn Slip/skid 1.8.2 Altitude Encoder LRU DISPLAY FUNCTION GAE 12 Provides pressure altitude information to the transponder. GNX Aircraft static pressure 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 1-15 System at a Glance 1.8.3 Connext Services LRU DISPLAY FUNCTION GDL 88 Provides datalink traffic and weather. GTX 345 Overlays Connext weather products on moving map and weather pages. GPS Traffic Services ADS-B TIS-B Weather Services FIS-B Weather Products Map & WX page:
Precip METARs Weather Page:
Precip Winds Aloft METARs/TAFs AIRMETs SIGMETs TFRs PIREPs 1.8.4 Traffic LRU DISPLAY FUNCTION GDL 88 GTX 345 GPS ADS-B 1-16 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2 Get Started Get Started 2.8.1 XPDR 2.9 DATABASES 2.1 Database Effective Cycles.......................................................................2-4 2.2 Active and Standby Databases ...............................................................2-5 2.3 Manual Updates ....................................................................................2-6 Database Updates Page ..................................................................2-6 Automatic Updates................................................................................2-9 Database Concierge ............................................................................2-10 2.3.1 Connext Setup ....................................................................................2-12 Bluetooth Setup ..................................................................................2-13 2.7.1 Enabling Bluetooth .......................................................................2-13 2.7.2 Managing Paired Devices..............................................................2-14 Importing a Flight Plan..................................................................2-14 2.7.3 2.8 Wi-Fi Setup..........................................................................................2-15 Connecting to Wi-Fi .....................................................................2-15 2.4 2.5 CONNECTIVITY 2.6 2.7 2.9.1 2.9.2 2.9.3 XPDR Setup .........................................................................................2-17 Displaying Data ............................................................................2-17 Enabling Extended Squitter Transmissions.....................................2-17 Assigning a Flight ID .....................................................................2-18 2.10 XPDR Modes .......................................................................................2-19 2.11 Squawk Code Keys..............................................................................2-20 2.11.1 VFR ..............................................................................................2-20 2.11.2 IDENT ..........................................................................................2-20 2.12 Remote Control...................................................................................2-22 2.13 XPDR Alert ..........................................................................................2-22 PILOT SETTINGS 2.14 CDI Scale.............................................................................................2-23 2.14.1 Horizontal Alarm Limits ................................................................2-24 2.14.2 CDI On Screen..............................................................................2-24 2.15 Airport Runway Criteria .......................................................................2-25 2.15.1 Runway Surface............................................................................2-25 2.15.2 Minimum Runway Length.............................................................2-25 2.16 Clocks & Timers...................................................................................2-26 2.16.1 Timers ..........................................................................................2-26 2.16.2 Clock............................................................................................2-26 2.17 Page Shortcuts ....................................................................................2-27 2.18 Alerts Settings .....................................................................................2-28 2.19 Unit Selections.....................................................................................2-29 2.20 Display Brightness Control ...................................................................2-30 2.20.1 Automatic Brightness Control.......................................................2-30 2.20.2 Manual Brightness Control ...........................................................2-30 2.21 Scheduled Messages ...........................................................................2-31 2.21.1 Message Types .............................................................................2-31 2.21.2 Modifying Scheduled Messages ....................................................2-31 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-1 Get Started STATUS INDICATIONS 2.22 Alert Types ..........................................................................................2-32 2.22.1 Alert Annunciations......................................................................2-33 2.22.2 Pop-up Alerts ...............................................................................2-34 2.22.3 Aural Alerts ..................................................................................2-34 2.23 System Status Page..............................................................................2-35 2.24 GPS Status Page ..................................................................................2-35 2.24.1 Circle of Uncertainty.....................................................................2-37 2.24.2 SBAS Providers .............................................................................2-38 2.24.3 GPS Status Annunciations.............................................................2-38 2.24.4 GPS Alerts ....................................................................................2-39 2.25 ADS-B Status Page...............................................................................2-40 LOGS 2.26 Exporting to SD Card ..........................................................................2-41 2-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Get Started Databases NOTE The navigator supports SD cards in the FAT32 format only, with capacities ranging between 8 GB and 32 GB. Databases are stored in the units internal memory. To view update cycles, or to purchase individual databases or database packages, go to flyGarmin.com. There are two methods for loading and updating databases:
1. Load databases via SD card. The card may be removed after loading. 2. Transfer databases from a Flight Stream 510 wireless datacard. Requires Garmin Pilot application on a portable electronic device. Basemap Navigation Obstacles SafeTaxi Terrain SUPPORTED DATABASES Bodies of water, geopolitical boundary, and road information Airport, NAVAID, waypoint, and airspace information
(Garmin or Jeppesen) Obstacle and wire data Airport surface diagrams Terrain elevation data For information regarding third party navigation databases, go to jeppesen.com. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-3 Get Started 2.1 Database Effective Cycles Most databases expire at regular intervals. Exceptions include Basemap and Terrain, which neither expire nor update on a regular schedule. The start-up page lists all currently installed databases. Review this list for current database types, cycle numbers, and expiration dates. Yellow text denotes when a database is:
Not available Missing date information Past its expiration date Installed before its effective date DATABASE EFFECTIVE STATUS Effective upon release Transfer occurs prior to database verification at system start-up Includes Basemap and Terrain No automatic transfer if Flight Stream 510 is present No pilot confirmation or restart required Effective during a specific period Unit determines database status using the current date and time from GPS Automatic activation occurs on the effective date Databases with no effective date Databases with specified effective dates DATABASE NOT FOUND Notifications for databases not present or available also display in the form of system messages. Tapping Database Info opens the Active Database Information page. Review this list to determine the status of the indicated database. 2-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Get Started 2.2 Active and Standby Databases The navigator uses two types of databases: active and standby. Active databases are in use by the system. Standby databases have not reached the effective date. During normal operation, information about all active and standby databases are viewable on the associated info page. From the Home page, tap System > System Status > Select Active or Standby. DB INFO PAGE DISPLAYS Active Standby Information about databases currently in use View Copyrights key Information about databases that are not yet effective The Standby DB Info page notifies when no standby databases are available. VIEW COPYRIGHTS Tapping this key displays copyright information for all installed databases. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-5 Get Started 2.3 Manual Updates FUNCTIONAL LIMITATIONS The Database Updates page is available only when:
The aircraft is on ground The start-up page is active (i.e., during power up) 2.3.1 Database Updates Page This page presents a list of all available databases. To open, tap the Databases key on the start-up page. 2 1 3 DATABASE SOURCE INDICATION Connext Icon A Connext icon indicates when a database is from Garmin Pilot via wireless transfer. No indication means the database is either from an SD card or the units internal standby queue. 2-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 SELECT ALL DATABASES Select individual databases for transfer, or choose Select All if all listed databases require updating. Get Started Basemap and Terrain update automatically and require no action. After all selections are made, initiate the update process by tapping Start. By default, this page displays only the databases recommended for update. A message notifies when no such databases are available. The unit automatically restarts once all updates are complete. SHOW ALL DATABASES Tapping Show All displays a complete list of all databases. Error Icon Older Timestamp This list may include databases that are:
Not yet effective Older than the currently active database(s) Unable to update due to an error 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-7 Get Started ERROR INFORMATION To determine the cause of a database error, tap Error Info. SELECT REGION An information window provides details regarding the state of the database. This key appears when two databases are of the same type and cycle, but pertain to different regions. To specify a database region, tap Select Region, then select the appropriate menu option. 2-8 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Get Started 2.4 Automatic Updates AUTOMATIC UPDATES OCCUR WHEN... A newer database is detected on the SD card or in the internal standby queue A newer database is within its effective dates The aircraft is on ground When a newer database is available, follow the on-screen prompts to complete the update process. A status page displays a progress bar and the name of each database as it uploads to the unit. Terrain databases may require up to 5 minutes for transfer. Total transfer time depends on the SD card type. The unit automatically restarts once the update is complete. The update is indicated in the list of currently installed databases. INSTALL OR UPDATE A DATABASE USING AN SD CARD 1. Download a database onto an SD card. 2. Insert the SD card with the most recent database(s) into the card slot. 3. Power on the unit. Selecting Update opens the DB Updates page. A list displays the newest databases. All newer databases (effective and expired) transfer from the SD card to the internal standby queue. BASEMAP AND TERRAIN UPDATES These databases automatically transfer from an SD card without any prompting or progress indications. They do not require pilot confirmation or a unit restart. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-9 Get Started 2.5 Database Concierge FEATURE REQUIREMENTS Flight Stream 510 wireless datacard Garmin Pilot app on a mobile device Database Concierge allows wireless transfer of databases from a mobile device. A pilot selects and downloads databases inside the Garmin Pilot app. Transfers occur once Flight Stream 510 establishes a wireless connection inside the aircraft. DATABASE CONCIERGE TRANSFER FUNCTIONS Automatic updates for databases with effective dates Preloads databases that are not yet effective by placing them in the internal standby queue Displays database type, cycle, effective date, and transfer progress Start key for manual operation Pilot confirmation required TRANSFER A DATABASE USING DATABASE CONCIERGE 1. Purchase database(s) from flyGarmin.com. 2. Open Garmin Pilot and follow the download instructions. 3. Install Flight Stream 510 and then power on unit. 4. Connect to Wi-Fi. 5. Follow the on screen prompts. 2-10 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Get Started Database Concierge transfers databases from the app to Flight Stream 510. A progress bar shows when this process is complete. The unit either updates or preloads databases based on their effective date. A second progress bar indicates upload status. The unit automatically restarts upon database activation. Database Transfer Status Database Update Status Tapping Skip cancels any unfinished wireless transfers and initiates the update process. The unit activates any databases that completed transfer before the interruption. Previously selected databases on an SD card or in the internal standby update as well. The message Transfers interrupted displays if no databases are available. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-11 Get Started Connectivity Data logs transfer over Bluetooth. FEATURE LIMITATIONS Unit allows pairing of up to 13 Bluetooth devices, with two simultaneous device connections Auto reconnect function is not available for Android devices 2.6 Connext Setup Connext works via the Bluetooth data link to provide up-to-date, wireless information throughout the cockpit. The Connext interface allows communication with applications (i.e., Garmin Pilot and ForeFlight Mobile) while running on a portable electronic device. Connext Features The following features are available on your portable electronic device. GPS position and velocity information [1] [2]
ADS-B In traffic data [1]
Uncorrected barometric pressure altitude used by transponder and ADS-B [1]
AHRS data via Connext and a built-in sensor [2] [3]
FIS-B weather and flight information [2]
[1]
[2]
[3]
[4]
GNX 375 only. External ADS-B In device required for GPS 175. Occurs when GNX 375 is installed as a standalone device. Attitude data does not output to other installed avionics. The internal AHRS sensor is only for use with a portable electronic device. All internal AHRS functions are automatic and do not require pilot action. 2-12 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.7 Bluetooth Setup Get Started BLUETOOTH FEATURES FIS-B weather [1]
ADS-B traffic [1]
GPS/WAASposition,velocity, and time Pressure altitude AHRS Magnetic heading Flight plan transfer The unit supports Bluetooth pairing with up to 13 portable electronic devices via the Garmin Pilot app. Bluetooth management options reside on the Devices page. Opening this page automatically initiates device pairing. Device information and pairing mode status display on the Connext page.
[1]
GNX 375, or GPS 175 with external ADS-B In source. 2.7.1 Enabling Bluetooth Tapping Bluetooth Enabled toggles Bluetooth functionality on or off. All associated setting controls and features are unavailable when this function is inactive. DEVICE NAME Allows entry of the Bluetooth device name. Use the keypad or control knobs to enter the Bluetooth name. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-13 Get Started 2.7.2 Managing Paired Devices To view a list of all paired devices and their connection status, tap Paired Devices. AUTO RECONNECT Enables automatic connection between the unit and the paired device when the two are within range. REMOVE Removing a device from the list means it is no longer paired with the unit. This action requires pilot confirmation. Be sure to remove pairing on both devices before attempting to pair them again. PAIRING STATUS The device is configured and communicating properly. The device is not available and is not configured or it is not communicating properly. 2.7.3 Importing a Flight Plan This feature allows automatic import of flight plans via Bluetooth. It may be necessary to turn this function off if a portable device application makes repeated erroneous attempts to send flight plans to the unit. 2-14 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.8 Wi-Fi Setup Get Started Tapping WiFi Info opens an information page. This page is accessible from the Database Update and start-up pages. Information includes:
Database Concierge connection status Connected device name Database update availability and instructions Wi-Fi SSID and password WI-FI INFO STATUS Wi-Fi connection status annunciates on the key label when the information page is not active. Flight Stream 510 requires power up. Wi-Fi is active, but the unit is waiting to connect with a connected device. Connection complete. Flight Stream 510 requires Garmin Pilot to be opened in order for database transfer to commence. Garmin Pilot opened and streaming to unit. 2.8.1 Connecting to Wi-Fi Follow the onscreen prompts when connecting to the Wi-Fi network. 1. Install Flight Stream 510 and then power on unit. Observe Wi-Fi status changes from Offline to Ready. 2. Tap Wi-Fi Info. 3. Enter the required SSID and password using the provided keypads. 4. Enable Wi-Fi setting on the portable device. Wi-Fi status changes to Open App once pairing is complete. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-15 Get Started XPDR FEATURE LIMITATIONS GNX 375 only. Transponder controls are accessible via the IDENT key. 1 2 3 5 4 XPDR Control Panel 1 2 3 Squawk Code Entry Field VFR Key XPDR Mode Key 4 5 Squawk Code Entry Keys Data Field 2-16 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.9 XPDR Setup Get Started Tap Menu to access the transponder setup options. From here you can:
Change the display of data Enable 1090 ES ADS-B Out functionality Assign a unique flight ID 2.9.1 Displaying Data Toggles the data field between pressure altitude and flight ID. Pressure Altitude Flight ID Displays the current pressure altitude. Displays the active Flight ID. Unless configured, the Flight ID is not editable. 2.9.2 Enabling Extended Squitter Transmissions Tapping ADS-B Out allows the transmission of ADS-B Out messages and position information. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-17 Get Started 2.9.3 FEATURE LIMITATIONS Assigning a Flight ID Availability dependent on configuration If the flight ID is editable, tap Flight ID and assign a unique identifier. Flight IDs are alphanumeric (upper-case only) and have an eight character limit. The active flight ID displays by default. 2-18 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.10 XPDR Modes Tapping Mode opens a menu of the available transponder modes. Options include Standby, On, and Altitude Reporting. Get Started MODE FUNCTION Transponder does not reply to interrogations or transmit ADS-B Out Standby Bluetooth functions remain operational Unit continues to receive ADS-B In information, but is On Altitude Reporting not a TIS-B participant Transponder replies to interrogations. Replies do not include pressure altitude Reply (R) symbol on the display indicates the transponder is responding Transponder replies to identification and altitude interrogations Reply (R) symbol indicates the transponder is responding GNX 375 transmissions include pressure altitude During Altitude Reporting mode, all aircraft air/ground state transmissions are handled via the transponder and require no pilot action. Always use this mode while in the air and on the ground, unless otherwise requested by ATC. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-19 Get Started 2.11 Squawk Code Keys SPECIAL SQUAWK CODES Default VFR code (USA) 1200 7500 7600 7700 Hijacking Loss of communications Emergency Eight squawk code entry keys (0 7) provide access to all ATCRBS codes. Pressing one of these keys begins the code selection sequence. Use the Backspace key or outer control knob to move the cursor. Digits that are not yet entered appear as underscores. Entering the fourth digit activates the new code. To cancel the code entry and exit the page, tap Cancel. Active squawk codes remain in use until a new code is entered. 2.11.1 VFR Tapping this key once sets the squawk code to the preprogrammed VFR code. This code is factory set to 1200, but may be changed during configuration. 2.11.2 IDENT Active Transponder Transponder Mode (On) Active Squawk Code Tapping this key activates the IDENT function for 18 seconds. This signal distinguishes the transponder from others on the air traffic controllers screen. 2-20 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 TRANSPONDER STATUS INDICATIONS IDENT Standby Mode Get Started Reply active No change to Identify function active transponder code Standby mode Current squawk code
(inactive) IDENT with New Squawk Code Altitude Reporting Mode Reply active Transponder code modified Altitude reporting mode Reply active VFR squawk code Identify function active
(active) SYMBOL MEANING Reply active Identify function active Transponder in operation Altitude Reporting Standby Press to initiate the IDENT function (code unmodified) Press to accept modified code and initiate IDENT function 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-21 Get Started 2.12 Remote Control Transponder functions are controllable from a connected G3X Touch display. Control features include:
Squawk code IDENT Flight ID Transponder mode ADS-B transmission For transponder control operation, consult the G3X Touch Pilots Guide. 2.13 XPDR Alert If the transponder fails:
Red X displays over the IDENT key Advisory message alerts XPDR control page is not available Transponder fail annunciations are designed to be immediately recognizable. If a failure occurs while the control page is active, the display automatically returns to the previous page. UNIT GPS 175 GNX 375 CONDITION GDL 88 failure. ADS-B interboard communication failure. For information regarding pilot response to a transponder failure, consult the AFMS. 2-22 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Pilot Settings Get Started System customization options allow you to:
Set and display the CDI Specify runway criteria Set the date and time Create shortcuts Set the display units Adjust display brightness Other setup options allow you to monitor time in flight and create custom reminder messages. These reside in the system Utilities. 2.14 CDI Scale Set the scale for the course deviation indicator. Scale values represent full scale deflection for the CDI to either side. Options: 0.30 nm 1.00 nm 2.00 nm Auto By default, the scale is set to Auto. At this setting, the CDI scale is set to 2.0 nm during the en route phase of flight. Within 31 NM (terminal area) of your destination airport, the CDI scale linearly ramps down to 1.0 NM over a distance of 1 NM. Likewise, when leaving your departure airport the CDI scale is set to 1.0 NM and gradually ramps up to 2 NM beyond 30 NM (from the departure airport). During GPS approach operations the CDI scale gradually transitions down to an angular CDI scale. At 2.0 NM before the final approach fix (FAF), CDI scaling is tightened from 1.0 NM to the angular full scale deflection (typically the angular full-scale deflection is 2.0, but will be as defined for the approach) If a lower CDI scale setting is selected (i.e., 1.0 or 0.3 NM), the higher scale settings are not selected during ANY phase of flight. For example, if 1.0 NM is selected, the unit uses this for en route and terminal phases and ramps down further during an approach. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-23 Get Started 2.14.1 Horizontal Alarm Limits Horizontal alarm limits (HAL) follow the selected CDI scale, unless the corresponding flight phase requires a lower alarm limit. For example, the selected scale setting is 1.0 nm, but full-scale deflection during approach still follows the approach scale setting (0.30 nm). FLIGHT PHASE Approach Terminal En Route Oceanic CDI SCALE 0.30 nm or Auto 1.00 nm or Auto 2.00 nm or Auto Auto HORIZONTAL ALARM LIMIT 0.30 nm 1.00 nm 2.00 nm 2.00 nm 2.14.2 CDI On Screen Toggling this setting displays the CDI scale on screen. When active, a CDI with lateral deviation indicator displays below the GPS NAV Status Indicator key. CDI OFF CDI ON Only the Flight Plan page access key is available. The CDI provides no indications without an active flight plan. Lateral Deviation Indicator Visual Approach Guidance Lateral deviation indications display when there is an active flight plan. Advisory horizontal and vertical guidance annunciations appear when a visual approach procedure is active. 2-24 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.15 Airport Runway Criteria Get Started Specify runway criteria from the System Setup page. Selections determine which airports are suitable when using the nearest airport search feature. During an approach, the terrain alerting algorithm uses airport runway settings to avoid nuisance alerts. 2.15.1 Runway Surface RUNWAY SURFACE OPTIONS Any Hard Only Hard/Soft Water Tap Runway Surface and then select the runway surface type. Selecting Any allows all surface types to display on the map. 2.15.2 Minimum Runway Length Specify a minimum runway length to prevent the display of airports with shorter runways. Typing 0 allows runways of any length to display. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-25 Get Started 2.16 Clocks & Timers 2.16.1 Timers Monitor time in flight using three available timer types. Timer settings are accessible via the Utilities menu page. Toggle between timer types using the provided display key. Clock/Generic Timer Trip/Departure Timers Stopwatch style counter. Count up or count down. Specify countdown time using the preset function. Controls:
Direction (Up, Down)
Start Stop Timer Preset Measure elapsed airborne time since the last ground-to-air transition. Set timer to start at unit power up or once the aircraft is in air. Controls:
Criteria (Power On, In Air)
Reset Timer 2.16.2 Clock Specify the time format and local offset. Settings reside in the System Setup page. Format options include 12 hour, 24 hour, and UTC. If a 12 hour or 24 hour clock is selected:
Tap Local Offset > Specify the appropriate offset value from UTC. 2-26 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Get Started 2.17 Page Shortcuts A knob shortcut option allows you to customize slots 2 and 3 of the locator bar. Slot one is reserved for the Map page. Tap a slot key and assign a page to that slot. PAGE SHORTCUT OPTIONS Traffic Terrain Weather Nearest Airport Flight Plan Depending on configuration, Traffic and Weather shortcuts may not be available. Verify shortcut operation once complete. Tapping Restore Defaults returns both slots to their default settings (Terrain for Slot 2, Nearest Airport for Slot 3). 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-27 Get Started 2.18 Alerts Settings Airspace alerts generate a message and filtering of the Nearest Airspace list. They rely on three-dimensional data (altitude, latitude, and longitude) to avoid nuisance alerts. FEATURE LIMITATIONS Alert altitudes are dependent on aircraft and airspace altitudes and the pilot-specified altitude buffer value Control keys allow you to select which airspace boundaries generate an alert annunciation upon entry. Alert boundaries for controlled airspace are sectorized to provide complete information on any nearby airspace. Alert settings do not alter the depiction of airspace, nor do they change Smart Airspace settings on the Map page. With the exception of Altitude Buffer, airspace alert options are on/off only. Airspace alerts for Prohibited airspace cannot be disabled. 2-28 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.19 Unit Selections Customize the display unit settings. Tapping a parameter key opens a menu of the available unit types. Get Started PARAMETER Distance/Speed Temperature NAV Angle Magnetic Variation SETTINGS Fahrenheit (F) Nautical Miles (nm/kt) Statute Miles (sm/mph) Celsius (C) Magnetic () True (T) User (U) Specify number of degrees for east or west (E, W) Available only when User (U) is the active NAV angle SPECIFY UNIT TYPE 1. Review the current unit selections. 2. Tap the applicable parameter key. 3. Select a unit type. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-29 Get Started 2.20 Display Brightness Control Depending on configuration, display brightness is controlled using inputs from the built in photocell, aircraft dimmer bus, or both. 2.20.1 Automatic Brightness Control Dimming is limited to prevent on screen indications from becoming unreadable. The built in photocell automatically controls display brightness based on ambient light levels. Backlight Intensity Level Manual Offset Indicator During automatic control, the pilot may still adjust brightness using the manual offset controls in the Backlight page. The unit retains manual offset settings over power cycles. Decrease Backlight Increase Backlight 2.20.2 Manual Brightness Control Optionally, the unit is configurable to use an aircraft dimming bus for display brightness control. Upon reaching minimum input level, display brightness reverts to the photocell. This prevents the display from going black in the event of a dimmer input failure. Installer configured curves determine the amount of change in brightness that occurs in response to a control adjustment. If brightness control is not satisfactory, contact a Garmin dealer to adjust the lighting curves. 2-30 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.21 Scheduled Messages Create custom reminder messages and set when they will display. Allows one time, periodic, and event-based message types. Get Started Active reminders appear at the top of the scheduled message list. This list is accessible via the Utilities menu page. Examples: Call FBO Close flight plan Switch fuel tanks CREATE A REMINDER MESSAGE 1. Tap Create Scheduled Message. 2. Specify the message type, content, and countdown timer value. 2.21.1 Message Types TYPE One time Periodic Event DISPLAY Displays when the timer expires, or following each power cycle until message deletion. Displays after a specified duration of time. Countdown repeats once the message displays. Based a specified date and time. Message timer not applicable. 2.21.2 Modifying Scheduled Messages Once created, these messages may be modified at any time. Selecting a scheduled message opens an options menu. EDIT MESSAGE This function is accessible from either the Scheduled Messages page or the system message list. RESET TIMER Restarts the countdown timer. DELETE MESSAGE Confirming this request removes the selected message from the list. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-31 Get Started Status Indications 2.22 Alert Types The unit generates annunciations in response to various conditions that may occur. These abbreviated messages are grouped according to the level of urgency and required response. They display in order of priority, from highest to lowest. 1. Warnings 2. Cautions 3. Mode & function advisories WARNINGS & CAUTIONS Warnings require immediate attention. Cautions indicate the presence of an abnormal condition that may require pilot action. A warning may follow a caution if no attempt is made to correct the condition (e.g., altering the aircrafts path toward the alerted terrain or obstacle). MODE & FUNCTION ADVISORIES Advisories provide status and operating information. System advisories display on a dedicated page or slide over window. Depending on the number of advisories, this list may be scrollable. Function or mode specific advisories appear as unobstructed annunciations on the associated display. System Messages Page Mode Advisory Annunciation 2-32 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Get Started 2.22.1 Alert Annunciations Alert annunciations are abbreviated messages that indicate an alerted function or mode. The color of the annunciation depends on the alert type. ALERT COLORS WARNING CAUTION ADVISORY Warnings display in white text on red background Cautions display in black text on amber background Function or mode specific advisories display in black text on white background When an alert is triggered, the annunciation flashes by alternating text and background colors. It turns solid after five seconds. All annunciations remain active
(solid) until the condition is resolved or no longer a threat. ANNUNCIATION LOCATION Alerts and informational advisories annunciate in the annunciator bar along the bottom of the screen. Alerts, Inhibits and Test Mode Advisories Flight Phase Procedure Waypoint and Power Off Advisories 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-33 Get Started 2.22.2 Pop-up Alerts If a warning or caution relating to terrain or traffic occurs, a pop-up window may display. These pop-ups only appear if the alerted functions associated page is not active. POP-UP ALERT PRIORITY In the event of simultaneous alerts, pop-up windows display in the following order:
1. Terrain alerts 2. Traffic alerts Each pop-up alert provides:
Threat indication Alert annunciation Option to inhibit or mute the alert Control for closing the pop-up window Direct access to the associated page Pop-up Alert Layout 1 2 3 Threat Indication Alert Annunciation Close Pop-up Window Key 4 5 Alert Inhibit Key Go to <Page> Key To open the indicated page, tap Go to <Page>. To acknowledge the alert and return to previous page view, tap Close. Aural Alerts 2.22.3 FEATURE LIMITATIONS GNX 375 only (traffic alerts) Traffic alerts are accompanied by an aural voice message. Voice gender is configured during installation. 2-34 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.23 System Status Page View information specific to the unit and its software. Refer here when contacting customer service. Get Started DATA FIELDS Serial number System ID Main software version GPS/WAAS software version Transponder software version
(GNX 375 only) CONTROLS Database Info access keys:
Active Standby 2.24 GPS Status Page Monitor GPS receiver performance, establish a baseline for normal system operation, and troubleshoot weak or missing signal issues. This page provides a visual reference of GPS receiver functions, including:
GPS solution and receiver status Position accuracy Current satellite coverage Phase of flight Present position
(latitude and longitude) SKY VIEW DISPLAY Depicts satellites currently in view as well as their respective positions. Outer circle represents the horizon
(with north at the top of the circle) Inner circle represents 45 above the horizon Center point shows the position directly overhead 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-35 Get Started SIGNAL STRENGTH INDICATIONS SATELLITE SVIDS Each bar is labeled with the SVID of the corresponding satellite. Numbers vary according to satellite type. GPS: 1 to 31 SBAS: 120 to 138 A graph shows GPS signal strength for up to 15 satellites. As the GPS receiver locks onto satellites, a signal strength bar appears for each satellite in view. Graph symbols depict the progress of satellite acquisition. Some data may not display until the unit has acquired enough satellites for a fix. SYMBOL CONDITION Not present Receiver is searching for the indicated satellites. Gray bar, empty Gray bar, solid Yellow bar, solid Cyan bar, cross-hatch Cyan bar, solid Green bar, solid Satellite located. Satellite located, receiver is collecting data. Data collected, but satellite is excluded from position solution (i.e., it is not in use). Satellite located, but FDE excludes it for being a faulty satellite. Data collected, but receiver is not using satellite in the position solution. Data collected, satellite in use in the current position solution. D (inside bar) Differential corrections are in use (e.g., WAAS). 2-36 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 POSITION ACCURACY FIELDS LABEL EPU POSITION DATA Estimated Position Uncertainty HDOP Horizontal Dilution of Precision HFOM Horizontal Figure of Merit VFOM Vertical Figure of Merit EPU is the horizontal position error estimated by the fault detection and exclusion algorithm, in feet or meters. FDE PREDICTION Get Started Information fields indicate the accuracy of the position fix. HFOM and VFOM values represent 95% confidence levels in horizontal and vertical accuracy. Lower values mean higher accuracy. Higher values are the least accurate. NOTE Under FAR parts 91, 121, 125, and 135, FDE must be used prior to all oceanic or remote area flights using the GPS 175/GNX 375 as a primary means of navigation. This program uses an algorithm to predict FDE availability. If the unit has not been in operation for more than six months, acquiring satellite data to establish almanac and satellite orbit information may take 5 to 10 minutes. 2.24.1 Circle of Uncertainty FEATURE LIMITATIONS Available only when the aircraft is on ground Displays only on the Map page Depicts area surrounding the ownship when GPS cannot accurately determine aircraft location Expands as GPS horizontal accuracy degrades Shrinks as accuracy improves Transparent so as not to obstruct other features 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-37 Get Started 2.24.2 SBAS Providers NOTE Operating with SBAS active outside of the service area may cause elevated EPU values to display on the status page. Regardless of the EPU value displayed, the LOI annunciation is the controlling indication for determining the integrity of the GPS navigation solution. SBAS supports wide area or regional augmentation through the use of additional satellite broadcast messages. Tap this key and select from the list of providers. PROVIDER EGNOS GAGAN MSAS WAAS SERVICE AREAS Most of Europe and parts of North Africa. India Japan only. Alaska, Canada, the 48 contiguous states, and most of Central America. 2.24.3 GPS Status Annunciations Once the GPS receiver determines the aircrafts position, the unit displays position, altitude, track, and ground speed data. GPS status annunciates under the following conditions. ANNUNCIATION CONDITION Acquiring 3D Nav 3D Diff Nav LOI GPS receiver uses last known position and satellite orbital data (collected continuously from satellites) to determine which satellites should be in view. 3-D navigation mode. GPS receiver computes altitude using satellite data. 3-D navigation mode. Differential corrections from SBAS provider are in use. Satellite coverage is insufficient to pass built-in integrity monitoring tests. 2-38 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 2.24.4 GPS Alerts The following alert conditions can affect GPS accuracy. INDICATIONS FAULT TYPE CONDITION Get Started Yellow LOI annunciation. Loss of Integrity Integrity of the GPS position does not meet the requirements for the current phase of flight. Occurs before the final approach fix
(if an approach is active). Aircraft is after the final approach fix and GPS integrity does not meet the active approach requirements. Insufficient number of satellites supporting aircraft position (i.e., more than 5 seconds pass without adequate satellites to compute a position). GPS sensor detects an excessive position error or failure that cannot be excluded within the time to alert. On-board hardware failure. Loss of Navigation Unit invalidates active course guidance. Annunciation is specific to cause. Yellow No GPS Position annunciation. Ownship icon not present Loss of Position Unit cannot determine a GPS position solution. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-39 Get Started 2.25 ADS-B Status Page View last uplink time and GPS source information. FEATURE REQUIREMENTS GDL 88 or GTX 345 ADS-B transceiver (GPS 175 only) UPLINK TIME TEXT COLOR Green Yellow MINUTES SINCE LAST UPLINK Dashes indicate when valid uplink data is unavailable (e.g., the device is offline).
< 5 5 to 15
> 15 FIS-B WX STATUS Tapping this key opens the FIS-B Weather Status page. This page is also accessible from the FIS-B Weather setup menu. TRAFFIC APPLICATION STATUS Tap this key to view the status of the three traffic applications: AIRB SURF TSAA (airborne alerts) ANNUNCIATION DESCRIPTION On Available to Run Unavailable to Run Unavailable - Fault Application is running. Required ownship data is available and meets the performance criteria. Application is configured. Required input data is available and meets the performance criteria. ASA application is off. Required input data is not available due to a failure
(e.g., ASA application process failed). Required input data is available, but does not meet the performance criteria or is not available due to non-computed data conditions. 2-40 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Logs Get Started 2.26 Exporting to SD Card A logging function stores WAAS diagnostic data in the units internal memory. This information is available for export to an SD card for later analysis. FEATURE REQUIREMENTS SD card The export function resides in the Logs page. This function is not available if no log files are present. WAAS Diagnostic Log Functions Generates log files automatically upon unit power-up Provides WAAS engine data in the form of serial text messages Overwrites oldest file when the internal log reaches capacity Exports to the log_files folder on the SD card 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 2-41 INTENTIONALLY LEFT BLANK 2-42 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3 Navigation Navigation 3.1.1 3.1.2 MAP 3.1 Map Interactions ...................................................................................3-6 Basic Interactions............................................................................3-6 Graphical Flight Plan Editing ...........................................................3-8 3.2 Map Setup ..........................................................................................3-12 3.2.1 Configure User Fields....................................................................3-13 3.2.2 Map Orientation...........................................................................3-14 North Up Above ...........................................................................3-15 3.2.3 Visual Approach ...........................................................................3-15 3.2.4 TOPO Scale...................................................................................3-15 3.2.5 Range Ring...................................................................................3-16 3.2.6 3.2.7 Track Vector .................................................................................3-16 3.2.8 Ahead View..................................................................................3-16 3.2.9 Map Detail ...................................................................................3-17 3.3 Map Overlays ......................................................................................3-19 Overlay Controls...........................................................................3-19 Overlay Status Icons......................................................................3-22 Smart Airspace .............................................................................3-23 SafeTaxi........................................................................................3-24 3.3.1 3.3.2 3.3.3 3.3.4 3.7.1 ACTIVE FLIGHT PLAN 3.4 3.5 3.6 3.7 Edit Data Fields....................................................................................3-28 Collapse All Airways ............................................................................3-28 Parallel Track .......................................................................................3-29 Flight Plan Catalog ..............................................................................3-30 Delete a Flight Plan.......................................................................3-31 3.8 Creating a Flight Plan...........................................................................3-32 3.9 Waypoint Options ...............................................................................3-33 3.10 Active Flight Plan Map Overlay.............................................................3-34 3.11 GPS NAV Status Indicator Key..............................................................3-35 DIRECT TO WAYPOINTS 3.12 Waypoint Information..........................................................................3-39 3.13 Waypoint Selection..............................................................................3-42 3.13.1 Waypoint Autofill .........................................................................3-42 3.13.2 Search Tabs ..................................................................................3-43 3.14 Create User Waypoints ........................................................................3-45 3.14.1 Define Waypoint Criteria ..............................................................3-46 3.14.2 Edit an Existing User Waypoint .....................................................3-48 3.14.3 Import User Waypoints .................................................................3-48 3.15 Nearest................................................................................................3-49 PROCEDURES 3.16 Basic Operations..................................................................................3-52 3.16.1 GPS Flight Phase Annunciations....................................................3-52 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-1 Navigation NAVIGATION APPS & FUNCTIONS Menu selections vary based on features and optional equipment installed with Garmin avionics.
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NEXRAD and Terrain overlays are mutually exclusive. 3-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation Map To increase situational awareness, the Map page depicts the aircrafts current position relative to land, aeronautical, weather, and traffic information. FEATURE REQUIREMENTS Active GPS source (aircraft position symbol) UAT receiver (FIS-B weather) FEATURE LIMITATIONS NEXRAD and terrain overlay functions are mutually exclusive. Enabling one automatically disables the other. 6 5 4 3 2 1 Map Page Aircraft Symbol Depicts current aircraft position and orientation. Tip represents actual aircraft location Symbol type is dependent upon configuration Absent if a GPS source is not available Track Vector Current ground track indication. Basemap Presents a graphical depiction of land and water data. User Field Customizable data field appearing in each corner of the map. By default, these display: distance, track, ground speed, and desired track NAV Range Ring Displays current direction of travel on a rotating compass. Orientation: Magnetic north 7 8 9 1 2 3 4 5 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-3 Navigation 6 7 8 9 Map Range Indicator Displays current map range in the upper left quadrant of the range ring
(i.e., the distance from the aircraft to the range ring). North Indicator Indicates True north. Page Orientation Label Options:
North Up orients map to True north. Heading Up orients map to current aircraft heading (requires heading data source interface). Track Up orients map to current aircraft GPS track. Map Overlay Icons Indicates status of overlays at the current map range. Includes: obstacles, power lines, precipitation, terrain, and traffic AUTOMATIC ZOOM AIRCRAFT STATE Ground Air DEFAULT ZOOM 0.50 nm 10.0 nm Map remembers the last zoom range for each aircraft state, and automatically resumes this view when the aircraft transitions between air and ground states. FEATURE LABELS To maintain readability, map feature labels remain uniform at all zoom levels. TRAFFIC UNITS System Units page selections do not affect the display of traffic on the Map page. 3-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation LAND AND WATER DEPICTIONS Land and water data are for general reference only. Data accuracy is not suitable for use as a primary navigation source. The information is intended to supplement and not replace official government charts and notices. DATA DRAWING ORDER The electronic map draws data in order of priority, from highest (1) to lowest (39), with higher priority features drawn atop those of lower priority. LEVEL 1 2 3 4 5 6 7 8 9 10 11 12 13 FEATURE Traffic Ownship Flight Plan Terrain-FLTA Point Obstacles Line Obstacles TFR METAR Winds Aloft SIGMET AIRMET PIREP AIREP LEVEL 14 15 16 17 18 19 20 21 22 23 24 25 FEATURE Surface Conditions Airspace Waypoints Airways Reference Grid Radar Coverage NEXRAD SafeTaxi Runways Terrain Basemap Topo 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-5 Navigation 3.1 Map Interactions 3.1.1 Basic Interactions Typical map interactions include zoom, pan, and object selection. PAN & ZOOM Panning allows movement of the map in any direction without change to the current zoom setting. Zooming adjusts the current magnification level between pre-defined range parameters. Before flight, consider which map scales are best for achieving the desired level of detail and map information. Generally, use smaller map scales in and around terminal areas and whenever precise navigation is required (e.g., airway or radial intercepts). During cruise flight, increase the map scale to better balance navigation, situational awareness, and decision making. Maximum Scale Value Minimum Scale Value OBJECT SELECTION Tapping any object or location on the map displays a map pointer and an information banner. MAP POINTER This symbol indicates point of contact on the map. A gray circle highlights any selected waypoint or obstacle. 3-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 MAP INFO Selected Airport Navigation Available information and controls are dependent upon object or location type and proximity to other objects. Selecting an airport icon displays the airports highest field elevation. An information page access key displays when you select a waypoint, airspace, airport, airport surface hot spot, or TFR. DATA FIELDS Pan mode annunciation Bearing and distance from current aircraft position to map pointer Location elevation Maximum altitude AGL and MSL for obstacles CONTROLS Map Pointer/Create Waypoint Graphical Edit Next (for stacked objects) Associated information page access key, if applicable STACKED OBJECTS To move the selector through each object in proximity of the map pointer, select an object and tap Next. Stack Active Selection Overlapping objects may be difficult to identify at a given zoom level. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-7 Navigation AIRSPACE INFO Selected Airspace When selected, active airspace boundaries change color. Tapping Airspace Info opens the associated information page. Data fields display information specific to the selected airspace. Available controls reside along the bottom of the page. DATA FIELDS Airspace name and type icon ATC entity responsible for the airspace, if applicable Floor and ceiling altitudes Proximity to airspace CONTROLS Frequencies: View a list of all related radio frequencies Preview: View the airspace boundary and a 2-D map of the surrounding area Graphical Flight Plan Editing 3.1.2 FEATURE LIMITATIONS Parallel track offsets do not apply to the temporary flight plan Graphical editing allows quick changes to the active flight plan from the map display. Map provides identifier keys for selecting waypoints that are stacked or in close proximity. If the displayed options are not preferred, tap away or select Cancel. 3-8 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 TEMPORARY FLIGHT PLAN BANNER An information banner displays waypoint selections made during graphical edit mode. All selections become active once you tap Done. Navigation Lists up to four waypoint identifiers Ellipse indicates additional waypoints Initial waypoint in flight plan always appears first Tapping Undo reverses the last edit. You may undo up to nine of the most recent actions. On the map, dragging and releasing the leg away from any waypoints removes it from the temporary flight plan. To exit edit mode without saving changes, tap Cancel. ADD WAYPOINT TO AN EXISTING LEG Selected Waypoint You can edit, add, or omit flight plan legs by tapping or dragging your finger directly on the map. Existing Leg 1. Tap any location on the map. 2. Tap Graphical Edit. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-9 Navigation 3. Tap and drag the leg to a new waypoint or airway, then release. The temporary flight plan adjusts to show the new route. If no other edits are necessary, tap Done. The new waypoint now appears in the active flight plan. Delete any existing flight plan before attempting to graphically edit a direct-to waypoint. Map does not allow the addition of an intermediate waypoint between the current position and a direct-to waypoint unless the waypoint is in the flight plan. 3-10 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 REMOVE WAYPOINT FROM FLIGHT PLAN Navigation You can tap and drag any leg to another waypoint or airway, or release it away from any waypoint if an alternate destination is not preferred. CREATE LEGS WITHOUT AN EXISTING FLIGHT PLAN If an active flight plan does not exist, you can graphically create one without ever leaving the Map page. 1. Tap any location on the map > Graphical Edit. 2. Begin tapping waypoints to add them to the temporary flight plan. 3. Tap Done. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-11 Navigation 3.2 Map Setup Map setup options allow you to customize the display of aeronautical information. Tap Menu when you need to:
Change map orientation settings Configure user fields Adjust the map detail level Enable map overlays Select a NEXRAD source Filter airspace data according to altitude Specify airway types and range values Expand the forward-looking view for improved situational awareness RESTORE MAP SETTINGS With the exception of user fields, this key restores all original factory map settings. 3-12 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.2.1 Configure User Fields Navigation DEFAULT USER FIELDS DIS - Distance TRK - Track GS - Ground Speed DTK - Desired Track Displays the Map page in configuration mode, allowing you to customize the display of data in each corner of the Map page. User fields are useful during time sensitive and work load intense phases of flight. In configuration mode:
All four data fields change to selectable keys All other map elements are inactive Tap any key and select from the list of available data types. Displayed units change based on selection. Selecting OFF removes the corresponding user field from the map page. User Field Absent Tapping Restore User Fields returns all fields to their default settings. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-13 Navigation LABEL BRG DIS/BRG APT FIELD TYPE Bearing to waypoint LABEL FIELD TYPE MSA Minimum safe altitude Distance/bearing from destination airport (i.e., the straight line distance) OAT (static) Outside static air temperature DIS Distance to waypoint OAT (total) Outside total air temperature DIS to Dest Distance to destination
(i.e., the distance along the flight plan) Time Current time DTK ESA ETA Desired track Time to TOD Time to top of descent En route safe altitude TKE Track angle error Estimated time of arrival Trip Timer Timer display ETA at Dest ETA at destination ETE Estimated time en route ETE to Dest ETE to destination Generic Timer GS GSL Timer display GPS ground speed GPS altitude TRK VSR Wind XTK OFF Track Vertical speed required Wind speed and direction Cross track error Do not display data field Destination refers to the missed approach point (if an approach is loaded) or the final airport in the flight plan. 3.2.2 Map Orientation Sets the orientation of the map display. Options include North Up, Track Up, or Heading Up. Label below the North indicator shows the current orientation. This label is absent when the info banner is active. North Up is useful when zoomed out to view the entire route or a frontal system on a NEXRAD display. 3-14 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation 3.2.3 North Up Above Sets the range at which map orientation changes to North Up. Using the North Up Above feature causes the screen to switch at certain zoom levels. This is useful as a shortcut to quickly increase situational awareness. 3.2.4 Visual Approach Sets the distance from the destination airport at which the Visual Approach selector key becomes active. Visual Approach Key To reduce page clutter, the key moves to the upper left corner of the display when the info banner is active. 3.2.5 TOPO Scale Displays a topographical elevation scale. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-15 Navigation 3.2.6 Range Ring Provides a more precise indication of distance between the aircraft and map objects. Track Vector 3.2.7 FEATURE LIMITATIONS Indication absent when aircraft velocity is < 30 kt Indicates the current ground track. Arrow tip represents aircraft position at the specified time interval
(if the aircraft maintains current ground track during that time). Track vector length options display as a dashed line and arrow extending from the aircraft icon, showing current track and distance the aircraft will travel in the selected time. If the track vector is placed over a point on the map, and no data is entered into the system, the unit indicates a wind-corrected GPS track to that point. This is useful for intercepting airways and radials, making small but positive lateral corrections during approaches, and in setting up for arrivals in the terminal area. Ahead View 3.2.8 FEATURE LIMITATIONS Not available when page orientation is North Up Repositions ownship near the bottom of the page to expand the view ahead. 3-16 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.2.9 Map Detail Changes to the map detail level take effect immediately. Options include:
Full High Medium Low Navigation FEATURE FULL HIGH MEDIUM LOW Small Cities Medium Cities Large Cities Freeways Highways Roads Railroads Basemap Labels VORs NDBs Line Obstacles Point Obstacles Airspaces that are not prohibited or restricted Waypoints SafeTaxi Restricted Airspaces Prohibited Airspaces Present Removed 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-17 Navigation AVIATION DATA SYMBOLS DESCRIPTION SYMBOL Non-towered, non-serviced airport [1]
Towered, non-serviced airport [1]
Soft surface, non-serviced airport SYMBOL DESCRIPTION Non-towered, serviced airport [1]
Towered, serviced airport
[1]
Soft surface, serviced airport Restricted (private) airport Unknown airport Heliport Intersection NDB VOR VORTAC ILS/DME or DME only LOM TACAN VOR/DME VRP Runway extension
[1]Symbol depicts orientation of longest runway. LAND DATA SYMBOLS SYMBOL DESCRIPTION SYMBOL DESCRIPTION Railroad River/Lake State/Province Border Local Road Local Highway National Highway Freeway Small City Medium City Large City 3-18 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation 3.3 Map Overlays OVERLAY SELECTIONS TOPO Terrain Traffic NEXRAD METAR TFR Airspaces Airways Obstacles&
Wires Overlay data controls reside in the Map menu. Changes to an overlay setting take effect immediately. NEXRAD and Terrain overlays are mutually exclusive. Enabling one automatically disables the other. NEXRAD and Traffic overlays are optional. 3.3.1 Overlay Controls Control keys enable the specified overlay function only and do not activate interfaced equipment. Control keys remain active even in the absence of required data. Overlay controls reside in the Map menu. TOPO TERRAIN Overlays topographical data and ground elevation scale Depictions are similar to a VFR sectional Pilot-selectable topographical elevation scale available Overlays terrain map data Color shading depicts terrain elevation relative to the aircrafts altitude 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-19 Navigation TRAFFIC NEXRAD METAR TFR Overlays traffic information Filter selection on the Traffic page determines altitude range Feature optional for GPS 175 Overlays datalink precipitation weather information Options include: CONUS, Regional, or off (none) Feature optional for GPS 175 Overlays graphical METARs Tapping flag icon displays information on current and forecast conditions Available only in areas covered by the active navigation database Feature optional for GPS 175 Overlays graphical TFRs Tapping this airspace symbol displays details regarding the restricted area Feature optional for GPS 175 3-20 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 AIRSPACES AIRWAYS OBSTACLES & WIRES Navigation Overlays airspace boundaries with altitude labels Filter selection determines altitude range Overlays the selected airway type(s) with identifier labels Options include: low, high, all, or off (none) High altitude airways are green, low altitude airways are gray Overlays obstacle and wire data Color shading depicts an objects elevation relative to the aircrafts altitude 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-21 Navigation 3.3.2 Overlay Status Icons Icons indicate which overlays are present at the current map range. A crossed out icon means the overlay is active, but data is unavailable due to a failure, test, or standby condition (where relevant). The absence of an overlay icon means one of two possible conditions:
1. Overlay not present at the current detail level or zoom setting. 2. Overlay control is off. METAR Obstacle TFR Terrain NEXRAD Power Line Traffic Data not available 3-22 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.3.3 Smart Airspace Navigation Smart Airspace Off Non-pertinent Airspace Garmins Smart Airspace feature automatically de-emphasizes non-pertinent airspace away from the aircrafts current altitude. When an airspaces vertical proximity to the aircraft is
>1,000 ft:
Its boundary becomes transparent All associated altitude labels turn gray This range increases linearly to 2,000 ft as the aircraft ascends to 10,000 ft. Smart Airspace On SMART AIRSPACE CRITERIA AIRCRAFT ALTITUDE AIRSPACE PROXIMITY TO AIRCRAFT [1]
Sea level
>10,000 ft
>1,000 ft 2,000 ft
[1]Vertical distance above and below aircraft altitude. AIRSPACE DATA SYMBOLS SYMBOL DESCRIPTION SYMBOL DESCRIPTION Class B Altitude Label (ceiling/floor) Class C Altitude Label (ceiling/floor) Class D Altitude Label (ceiling only) TFR Class B/TMA Class C/TCA Class D Restricted/Prohibited MIL Other/ADIZ 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-23 Navigation 3.3.4 SafeTaxi SAFETAXI FEATURES Airport diagram overlay that includes hot spot information Aircraft position relative to taxiways, runways, and airport landmarks Pilot selectable range options SafeTaxi provides greater map detail and higher image resolution at lower zoom levels. Feature labels denote:
Runways Taxiways Airport landmarks SAFETAXI DATA SYMBOLS SYMBOL DESCRIPTION SYMBOL DESCRIPTION Runway Helipad Taxiway Construction Area Airport Beacon Unpaved Parking 3-24 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 HOT SPOTS Navigation SafeTaxi hot spots identify locations on an airport surface where positional confusion or runway incursions are likely to occur. These known problem areas require heightened attention by pilots. Selecting the border of a hot spot displays a brief summary of the indicated hazard and an information key. Tapping this key provides additional location information. Numbering corresponds to a list on the airport diagram. The following airport features may be deemed hot spots by aviation authorities. Intersecting taxiways and runways Complex ramp areas Directional limitations Limited wing-tip clearance Overflight risk CONSTRUCTION SPOTS There are no expanded detail keys or notes associated with construction areas. Construction Area Border 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-25 Navigation Active Flight Plan Current flight plan information displays as a scrolling list on the Active Flight Plan page. FEATURE REQUIREMENTS Active flight plan FEATURE LIMITATIONS Displays up to 100 waypoints for an active flight plan Active Flight Plan Page 1 Waypoint Identifier Column 2 3 Active Leg Indicator Current Waypoint 4 Waypoint Type Icon 5 6 7 8 Selectable Data Field Columns Fix Type Indicator Leg Data Add Waypoint Key 3-26 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation For convenience, airport information is directly accessible from the procedure header. This includes airports specified in active approaches, arrivals, and departures. Tap Airport Info to open the corresponding information page. When applicable, labels indicate the fix type associated with an identifier. AIRPORT INFO Procedure Header Airport Info Key FIX TYPE INDICATIONS LABEL iaf FIX TYPE Initial Approach Fix faf map Final Approach Fix Missed Approach Point mahp Missed Approach Hold Point
-p Parallel Track (no fix) ACTIVE LEG STATUS INDICATIONS SYMBOL DESCRIPTION SYMBOL DESCRIPTION IAF FAF MAP MAHP Parallel Track Arc Right Arc Left Holding Pattern
(Right Turns) Holding Pattern
(Left Turns) Right Arrow Direct To 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-27 Navigation 3.4 Edit Data Fields To select a flight plan data column, tap Edit Data Fields. Columns are arranged in numerical order (1 - 3). To restore columns to default display settings, tap Restore Defaults. Selections are identical for each column. By default, flight plan information fields display:
Column 1: DTK Column 2: DIS Column 3: CUM DATA FIELD SELECTIONS CUM Cumulative Distance DIS DTK ESA ETA ETE Distance Desired Track En Route Safe Altitude Est. Time of Arrival Est. Time En Route 3.5 Collapse All Airways Airways automatically display as flight plan legs. A single airway may contain numerous legs. Airways without an active leg collapse for simplification. This does not affect airway legs shown on the external navigator(s). Airway Indication Expanded Airway Detail Airway Collapsed Indication Exit Waypoint All airways begin with an indicator field and end with an exit identifier. To hide all waypoints along an airway, but not the airways exit waypoint, tap Collapse All Airways. 3-28 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.6 Parallel Track Navigation A parallel track is a route that is offset a distance from and parallel to the original route. Parallel Track feature sets the offset distance of 1 to 99 nm to the left or right of the current flight plan. FEATURE REQUIREMENTS Active flight plan FEATURE LIMITATIONS Function not available when Direct-to is active. Graphically editing a flight plan cancels the parallel track function Large offset values combined with certain leg types (e.g., approach) or leg geometries (i.e., changes in track >120) do not support parallel track Creating a parallel course offset shows a magenta parallel track line to the left or right from the original course and shows the original course line in gray. The aircraft navigates to the parallel track course line and external CDI/HSI guidance drives from the parallel track. At the end of the flight plan when reaching the offset distance from the end of the parallel track, a parallel terminating message appears, giving time to intercept the original course. From the Active Flight Plan page:
1. Tap Menu > Parallel Track. 2. Specify the track direction and offset distance relative to the active flight plan. 3. Tap Activate.
-P indicates when the active leg is on a parallel track. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-29 Navigation 3.7 Flight Plan Catalog Create, activate, edit, copy, and delete flight plans with the Flight Plan Catalog function. The catalog holds up to 99 flight plans with up to 100 waypoint locations each. Flight plans are named by the departure and destination location. 1. In the Flight Plan page, tap Menu > Catalog > and tap a flight plan. 2. Tap a Route Option. FLIGHT PLAN ROUTE OPTION DESCRIPTION ACTIVATE INVERT &
ACTIVATE PREVIEW EDIT COPY This option creates a copy of the flight plan (automatically transfers to Active Flight Plan page) and overwrites the active flight plan. 1. Select the flight plan. 2. Tap Activate > OK to replace the existing flight plan with the new one. This option reverses and activates the previous flight plan. Select the flight plan. 3. Tap Invert & Activate > OK to invert and activate the flight plan. Previews the selected flight plan. Tap the flight plan > Preview. Edits the selected flight plan. 1. Tap the flight plan > Edit. 2. Make changes to the waypoint and use the Waypoint Options. Copies the selected flight plan. Tap the flight plan > Copy to copy the selected flight plan. If any changes are required for the copy, it can be used as a starting point for a similar flight plan. Use the Edit Route option to make the desired changes. DELETE Deletes the selected flight plan. Select the flight plan > Delete > OK. 3-30 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation 3.7.1 Delete a Flight Plan There are three ways to delete a flight plan. Remove a selected flight plan from the catalog Remove all flight plans from the catalog Remove all waypoints locations from the active flight plan Deleting the existing active flight plan does not delete the stored flight plan in the catalog. From the Active Flight Plan page:
1. Tap Menu > Delete. 2. Confirm the request. From the catalog:
1. Select a flight plan. 2. Tap Delete. 3. Confirm the request to delete all waypoints. To delete all flight plans from the catalog:
1. Select a flight plan. 2. Tap Delete All. 3. Confirm the request. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-31 Navigation 3.8 Creating a Flight Plan NOTE The unit cannot verify the accuracy of cataloged flight plans with modified procedures. You can create a flight plan one of three ways. Creating a new flight plan from the active flight plan Creating a flight plan from the Map page Creating a new flight plan in the catalog Flight plans are listed by the departure and destination waypoint identifiers. The destination waypoint is the last airport in the flight plan. CREATE A NEW FLIGHT PLAN 1. From the Home page, tap Flight Plan > Menu > Delete > OK to delete the existing active flight plan. If there is no active flight plan, continue to the next step. 2. Tap Add Waypoint > select a waypoint identifier > Enter, repeat as required. CREATE A FLIGHT PLAN FROM THE MAP PAGE 1. Tap the Map page display > Graphical Edit. 2. Tap the first flight plan location waypoint on the map. If there are nearby waypoints, select the location waypoint. 3. Tap the next location waypoint or airway on the map and continue adding locations as required and tap Done when finished. CREATE A NEW FLIGHT PLAN IN THE CATALOG It is not recommended to save flight plans with modified procedures in the flight plan catalog. 1. Tap Flight Plan > Menu > Catalog. 2. At the end of the flight plan list in the Catalog, tap Create New Catalog Route. 3. Tap Add Waypoint > select a waypoint identifier 4. Tap Menu > Direct-To (or Preview > Activate). 3-32 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.9 Waypoint Options Navigation Insert a new waypoint into a flight plan Selecting a waypoint identifier opens a menu. Changes to the active flight plan take effect immediately. Add an airway or procedure Change the active leg Remove a selected waypoint Add a holding pattern to an existing waypoint View information about a waypoint SELECTION Insert Before Insert After Load PROC Load Airway Activate Leg Hold at WPT WPT Info Remove FUNCTION Insert a new waypoint before the selected waypoint Insert a new waypoint after the selected waypoint Load and activate an approach, arrival, departure, missed approach, and vectors to final Assign an airway and exit waypoint to the selected entry waypoint (e.g., intersection, VOR) Designate any TO waypoint as the active leg Create a user-defined hold at the selected waypoint Specify hold parameters and preview holding patterns from a dedicated menu page Open the dedicated information page for the selected waypoint Remove the selected waypoint or hold from the active flight plan 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-33 Navigation 3.10 Active Flight Plan Map Overlay LEG STATUS Active COLOR Magenta Next & Future White Past or Inactive Gray Active, next, and previous flight plan legs overlay on the Map page and are display only. Previous Leg(s) Active Leg Next Leg(s) Leg Status Indications 3-34 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation 3.11 GPS NAV Status Indicator Key This key displays from-to-next route information when an active flight plan exists. It resides in the lower right corner of the display. Indications change based on active leg status. No Flight Plan Exists Route Indicator Only Tap for direct access to the Active Flight Plan page. Page icon means an active flight plan does not exist. Once the page is open, the indicator is display only. Underscores denote the absence of an active leg. Active Route Display CDI Scale Active Label changes to show active route identifiers (from-to-next) and leg types. Only from-to waypoints display when the CDI scale is active. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-35 Navigation Direct To FEATURE LIMITATIONS Not all flight plan entries are note selectable using the Direct-To function (e.g., holds and course reversals). Tap Direct-To Select a waypoint Activate the waypoint NAVIGATION KEYS DIRECT-TO KEY KEY DESCRIPTION DIRECT-TO DIRECT-TO ACTIVATE HOLD LOAD HOLD Sets a course to a specified waypoint Activates the loaded course Allows you to set holding patterns with inbound or outbound course guidance, left or right turns, and specify leg length in time or distance Loads holding patterns into the unit with a user-defined location inserted into a flight plan or using direct-to navigation HOLD ACTIVATE Activates the loaded hold pattern, keeping the aircraft in a hold pattern until it is removed REMOVE ENTER Removes a hold on a waypoint Enters a value using the keypad LOAD APPROACH Loads the approach course into the GPS/GNX unit 3-36 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation DIRECT-TO KEY ACTIVATE APPROACH KEY DESCRIPTION Activates the loaded approach DIRECT-TO NAVIGATION DESTINATION WAYPOINT RESULT LOCATION IS IN THE FLIGHT PLAN After reaching the location the next location in the flight plan sequence resumes. LOCATION IS NOT IN THE FLIGHT PLAN The flight plan is not active but remains available. Approach guidance is not active if a direct course is activated at a location between the FAF and the MAP and then tapping the Direct-To function. NAVIGATION OPTION DIRECT-TO COURSE REMOVING A DIRECT-TO COURSE INFORMATION AND INSTRUCTIONS 1. Tap Direct-To > Waypoint, FPL, orNRST APT tab. 2. Tap the waypoint identifier or Select Waypoint >
Activate. When canceling a Direct-To course, the previously active flight plan reactivates and the nearest leg to the aircraft position is the active leg. If there was no active flight plan, the aircraft continues with the current heading. To remove the Direct-To course, tap Direct-To > Remove. FLIGHT PLAN LOCATION If flight plans, holds, or course reversals, are not available using the Direct-To function, select the location. Tap Direct-To > FPL > the flight plan waypoint > Activate. NEAREST AIRPORT MAP LOCATION The airport at the top of the list is the closest airport. Tap Direct-To > NRST APT > waypoint identifier > Activate. Set a Direct-To course to any location on the Map page by touching an airport, VOR, NDB or any other location. Tapping the map page anywhere without an existing location name creates a waypoint with the name MAPWPT. On the Map page, tap a location > Direct-To > Activate. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-37 Navigation NAVIGATION OPTION OFF-ROUTE COURSE USER-DEFINED HOLD INFORMATION AND INSTRUCTIONS There are three options for creating an off-route and direct course; Waypoint or NRST APT tab, or selecting a location on the map. Activating an off-route Direct-To course automatically deactivates the current (or existing) flight plan. Removing the Direct-To course reactivates the original active flight plan and waypoint sequencing. Leg Type - Time or Distance Create user-defined holds as part of a direct-to function to a location. Modify course holds using these hold options. Course - Course Angle Direction - Inbound or Outbound Turn - Left or Right EFC - Expect Further Clearance Reminder Create a user-defined hold. When a user hold is changed with the Direct-To key, navigation guidance returns to the holding fix and the new hold initiates. Automatic waypoint sequencing suspends during the hold. Leg Time/Distance - Enter Time or Distance 1. Tap Direct-To > Hold > modify the course options. 2. Then tap Load Hold > Hold Activate. 3-38 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation Waypoints There are two types of waypoints: database and user Database waypoints (i.e., waypoints contained in the navigation database) are organized into five groups:
Database Waypoints The Airport page is a great place to start when performing an approach brief, checking weather, or considering a diversion. You also have the ability to define any point in space and store it. Unlike database waypoints, these user waypoints are editable. 3.12 Waypoint Information Dedicated information pages provide waypoint search functions and details not available on the Map page. FEATURE REQUIREMENTS FIS-B (viewing NOTAMs) Navigation database containing VRP waypoint data FEATURE LIMITATIONS 2-D maps provide zoom functionality only FIS-B transmits distant and FDC NOTAMs within 100 nm of radio station position 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-39 Navigation Intersection, VOR, VRP, and NDB information pages have a uniform layout. VOR Information Page 1 Waypoint Identifier key 5 Nearest NAVAID information 2 3 4 Location Information 6 Waypoint coordinates Preview key 7 Waypoint distance and bearing Waypoint specific information
(e.g., class, station declination, frequency) COMMON PAGE FEATURES All waypoint information pages share the following features. DATA FIELDS CONTROLS Distance and bearing from current WP Identifier key with access to aircraft position Latitude and longitude Applicable city, state, country and/or region (e.g., NW USA) Identifier and type icon multiple search tabs Preview key for displaying a 2-D map of the surrounding area
(includes SafeTaxi airport depictions) As you approach an airport, use the Preview function to orient yourself for such things as pattern entry or runway alignment. 3-40 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation WAYPOINT SPECIFIC PAGE FEATURES Page features listed here are unique to the corresponding waypoint. WAYPOINT PAGE FEATURES Info: Airport location, elevation, time zone, and fuel availability. Procedures: Available approach procedures. Runways: Identifiers, size, surface type, and traffic pattern direction. Airport To open a list of available runways, tap Runway. Frequencies: Available communication and localizer frequencies. The c symbol denotes frequencies that function as the CTAF. If available, for additional frequency information, tap More Information. WX Data: Applicable METARs, city forecasts, and TAF weather information. NOTAMs: Applicable distant and FDC NOTAMs. VRPs: Nearest VRPs. Data Fields:
Nearest VOR (identifier, type icon, bearing, and distance) Data Fields:
Frequency Nearest airport (identifier, type icon, bearing, and distance) Station declination VOR class Data Fields:
Nearest VRP (identifier, type icon, bearing, and distance) Data Fields:
Frequency Nearest airport (identifier, type icon, bearing, and distance) Marker description Intersection VOR VRP NDB 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-41 Navigation WAYPOINT PAGE FEATURES User WPT Edit: Opens the Create User Waypoint page for editing purposes. View List: Displays a list of all user waypoint identifiers. Delete: Removes the selected user waypoint from the list. Delete All: Removes all user waypoints from the list. All deletions require user confirmation. User waypoints in the active flight plan cannot be edited or deleted. Data Fields:
Reference position or nearest waypoint (identifier, type icon, radial, and distance), whichever is applicable Number of waypoints used out of 1,000 The User WPT page is the only page that allows you to view an entire list of all user waypoints created and saved in the database. 3.13 Waypoint Selection The WP Identifier key provides access to different waypoint search options. Enter a specific identifier or select one from the available search tabs. 3.13.1 Waypoint Autofill Autofilled Character Alphanumeric characters autofill based on the first alphabetical match in the navigation database. Autofill characters are cyan and display from the cursor position to the right of the field. Identifier Name Waypoint Icon Matching waypoint entries typically change with the addition of each typed character. An information key reflects each matching entry. WP Info Key No matches found and Duplicate found annunciate when applicable. 3-42 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.13.2 Search Tabs The Find key provides access to multiple search tabs. Each tab displays a list of selectable identifiers based on specific criteria. Navigation Waypoint Search Tabs Waypoint Identifier Type Icon Each entry includes general information about the associated waypoint. Bearing & Distance RECENT Lists up to 20 of the most recently viewed waypoints. NEAREST Lists up to 25 waypoints within a 200 nm radius. Tap Filter and select from the available filter options. Only waypoints belonging to the selected class appear in the list. To list all classes, select All. FLIGHT PLAN Lists all waypoints contained in the active flight plan. USER Lists up to 1,000 user-defined waypoints. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-43 Navigation SEARCH BY NAME SEARCH BY CITY Lists all airports, NDBs, and VORs associated with the specified facility name. Tap Search Facility Name to begin search. Lists all airports, NDBs, and VORs found in proximity of the city. Tap Search City Name to begin search. 3-44 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.14 Create User Waypoints Create and store up to 1,000 user defined waypoints. Navigation FEATURE LIMITATIONS Overwriting an existing waypoint identifier of the same name is not allowed. Names may be up to six characters in length Comment may be up to 25 characters Maximum waypoint limit: 1,000 Access this page from one of two places:
Waypoint Info page Map page MAP POINTER KEY Tapping any location on the map that is not a existing waypoint displays the Create Waypoint access key. USER WAYPOINT IDENTIFIER Assign a unique identifier or keep the unit generated identifier. By default, the identifier format is USR followed by a sequential three digit number. User waypoints are helpful when ATC requests that you fly one radial to intercept another. While the point is often defined by an intersection in the navigation database, this is not always the case. The Create User Waypoint function allows you to define the new intersection and insert it into the flight plan in advance, as opposed to using the NAV radio to tune each VOR and specify the radials to fly inbound and outbound. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-45 Navigation 3.14.1 Define Waypoint Criteria Active user waypoints already existing in a flight plan are not editable. When creating a user waypoint, you have the option to:
Create a user waypoint Assign a unique identifier Set the waypoint as temporary Enter a comment Set the waypoint position Edit the waypoint graphically SELECTION User Identifier Comment Position Graphical Edit Temporary Create FUNCTION Assign a unique identifier. Type a comment regarding the new waypoint. Set the waypoint position. Open a preview map for graphical editing purposes. User waypoint icon remains stationary as you move the surrounding map to the new location. Assign the waypoint a temporary status. Identifier remains available until the next unit power cycle. Add the new identifier to the used waypoints list. The associated information page opens automatically for viewing and editing purposes. 3-46 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 COMMENT FORMAT Default comments display in a specific format for each reference type. Navigation Radial/Radial
<Waypoint 1><Radial 1> / <Waypoint 2><Radial 2>
UBG177 / CVO031 Radial/Distance
<Waypoint><Radial> / <Distance>
UBG177 / 31 LAT/LON
<LAT> <LON>
N45 W123 POSITION OPTIONS Set the Waypoint Position using one of the following options. Radial/Radial:
Specify a waypoint and radial for each of the two reference points. Radial/Distance:
Specify the reference waypoint, radial, and distance. LAT/LON:
Specify the points latitude and longitude. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-47 Navigation 3.14.2 FEATURE LIMITATIONS Edit an Existing User Waypoint User waypoints that are part of a flight plan are not editable. You can access the edit function multiple ways. From the dedicated information page:
Home > Waypoint Info > User WPT > Specify an identifier, or tap View List and select an identifier from the used waypoints list > Edit From the Nearest page:
Home > Nearest > User WPT > Select an identifier from the list (e.g., USR001) >
Edit From the Active Flight Plan page:
Home > Flight Plan > Select the identifier from the flight plan > WPT Info > Edit MODIFY POSITION VALUES From the Edit WPT page, you can modify a user waypoints position one of two ways:
1. Tap Position > Latitude/Longitude > Specify the waypoints coordinates >
Save. OR 1. Tap Graphical Edit. 2. Hold and drag the basemap until the user waypoint icon appears over the desired location. 3. Tap Enter > Save. 3.14.3 Import User Waypoints NOTE The import function overwrites any existing user waypoint of the same name. The Import Waypoints key appears when the unit detects a user waypoint on the datacard. 1. Insert datacard containing user waypoints. 2. From the Home page, tap Waypoint Info > Import Waypoints. 3. Acknowledge the pop-up message. 3-48 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 3.15 Nearest View a list of the nearest waypoints, frequencies, or facilities within 200 nm of the aircrafts position. Navigation From the Home page:
1. Tap Nearest > select a waypoint or frequency icon. 2. Scroll through the list of entries. Information varies according to the selected waypoint or frequency type. Nearest waypoints provide an identifier key for accessing the associated information page. ICON DISPLAYS Nearest Airport
Identifier symbol distance bearing approach type
length of longest runway Nearest Intersection
Identifier symbol distance bearing Nearest VOR
Identifier symbol distance bearing frequency Nearest VRP
Identifier symbol distance bearing Nearest NDB
Identifier symbol distance bearing frequency Nearest User Waypoint
Identifier symbol distance bearing Nearest Airspace
Identifier symbol distance 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-49 Navigation ICON DISPLAYS Nearest ARTCC
Facility name distance bearing frequency Nearest FSS
Facility name distance bearing frequency
(RX denotes receive-only frequencies) Nearest WX FREQ
Facility name distance bearing
frequency of nearest ATIS, ASOS, and AWOS ENTRY LIMITS NEAREST LIST ARTCC, FSS Airspace Airport, Intersection, VOR, VRP, NDB, User, Weather FREQ ENTRY LIMIT 05 20 25 The number of entries displayed varies according to item type. Entries are ordered from closest to farthest. UPDATE INTERVALS With the exception of nearest airspace, all lists update every 30 seconds. The nearest airspace list updates once per second. MULTIPLE FREQUENCIES This key displays when more than one frequency is available at the indicated range. Applicable to functions displaying information only
(ARTCC, FSS, and WX FREQ). 3-50 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation Procedures Lateral and vertical guidance is available for visual and GPS/RNAV approaches. The published instrument approach procedures allows precision and non-precision approaches to airports and are directly accessible from the Procedures (PROC) icon. FEATURE REQUIREMENTS Baro-corrected altitude source (automatic sequencing of altitude leg types) In the absence of baro-corrected altitude data, altitude leg types require manual sequencing. FEATURE LIMITATIONS The flight plan allows only one procedure to be loaded at a time. Adding a new procedure overwrites any existing procedure LOAD A PROCEDURE Select the procedure type (departure, arrival, or approach) and then define the criteria for that procedure on the corresponding page. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-51 Navigation 3.16 Basic Operations The GPS/GNX guides each leg of the approach, sequencing through each leg, up to the Missed Approach Point (MAP). You can fly published approaches with the full transition using any published feeder route or initial approach fix (IAF), or with a Vectors-to-Final transition. For ILS, VOR, and NDB approaches (and non-precision localizer-based approaches), the moving map shows the surrounding conditions. Phase-of-flight annunciations displays the current mode of flight on the bottom of the screen. For non-GPS approaches, use the appropriate radio navigational aid for primary approach course guidance. Many non-precision approaches have GPS overlays, improving accuracy so approaches do not require overflying a VOR or NDB. Baro-corrected altitude is not required by the GPS/GNX to meet the requirements of TSO-C146e. An optional baro-corrected altitude source is recommended for automatic sequencing of altitude leg types. Procedures are arranged around the existing flight plan in the following order:
Departure, En Route, Arrival, and Approach. Always verify that the transition waypoints between each phase are correct. Departure waypoints insert before the En Route waypoints in the flight plan Arrival waypoints insert between the En Route waypoints and the approach waypoints 3.16.1 GPS Flight Phase Annunciations Phase of flight annunciations are a direct indication of the current CDI behavior for the selected navigation source. Not all annunciations are available for every navigator. Phase of flight annunciations appear in the annunciation bar. Under normal conditions, these annunciations are green. They turn yellow when cautionary conditions exist. ANNUNCIATION FLIGHT PHASE 0.30 NM 1.00 NM 0.3 nm CDI scale 1.0 nm CDI scale 3-52 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 ANNUNCIATION FLIGHT PHASE Navigation DPRT DR ENR HDG LEG LNAV LNAV+V L/VNAV LP LP +V LPV MAPR OCN TERM Terminal level with departure procedure as the active navigation Dead reckoning (CDI not available) En route Navigator provides heading information only
(CDI not available) Lateral Navigation Approach Lateral Navigation Approach with advisory vertical guidance provided. LNAV+V uses published LNAV minimums. Lateral and Vertical Navigation Approach Localizer Performance Approach Localizer Performance Approach with advisory vertical guidance provided. LP +V uses published LP minimums. Localizer Performance with Vertical guidance approach. Missed Approach Oceanic Terminal VISUAL Visual Approach 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-53 Navigation APPROACH PROCEDURES APPROACH DEPARTURE SELECTING A DEPARTURE DESCRIPTION AND INSTRUCTIONS A Departure Procedure (DP) is loaded at the departure airport in the flight plan. If the selected runway is RW10B, for example, it includes runways 10L and 10R. 1. Tap PROC > Departure. 2. Confirm the airport is shown or tap Airport to select an airport. 3. Tap Transition > select an arrival transition > Runway
> select the runway type > Load Departure. To change a departure, tap Departure > a new departure. To remove a departure, tap Remove Departure. ARRIVAL Published arrival procedures include Standard Terminal Arrival (STAR). SELECTING AN ARRIVAL APPROACH If using Descent VNAV, verify that the altitudes for the selected procedure match the charted altitudes and are appropriate for the airframe type. 1. Tap PROC > Tap Arrival. 2. Confirm the airport is shown or tap Airport to select an airport. 3. Tap Arrival > select an arrival type > Transition >
select an arrival transition. Tap Runway > select the runway type > Load Arrival. Loading alternate approaches during a missed approach procedure is available. The GPS/GNX retains missed approaches in the flight plan. The SBAS approach uses the Channel ID key to select the channel ID for the current destination. The channel ID for the SBAS approach is available from an approved approach chart. If there are duplicate numbers for a channel, a list is available to select the precise approach. 3-54 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 APPROACH DESCRIPTION AND INSTRUCTIONS Navigation 1. Tap PROC > Approach. 2. Confirm the airport is shown or tap Airport to select an airport. 3. On the Approach page, tap Approach > select an approach > Transition > select an approach transition. 4. Tap Channel/ID > add the channel number > Enter. 5. Tap Load Approach > Activate Approach. Tapping Activate Approach makes the active leg Direct-To the selected transition waypoint. For Vector approaches it activates a leg that is an extended final approach course. If the approach is not activated on this page, select Activate on the Procedures page. To insert or remove a hold from the procedure, re-load the procedure or activate it from the PROC-Approach page. The GPS/GNX stores procedure turns as one of the legs of the approach. Roll steering is provided to aircraft with compatible autopilots. The steering provided for the procedure turn does not guarantee that the aircraft will stay within the charted procedure turn boundaries. Make sure the approach is flown within the confines of the charted procedure. After reaching the Missed Approach Point (MAP), the unit continues to guide along an extension of the final course segment (FAF to MAP) until the missed approach procedure is manually initiated (as mentioned previously in reference to the SUSP advisory). If the unit is not configured for a CDI key, then the Activate GPS Missed Approach feature only resumes automatic waypoint sequencing. Switch to GPS navigation by using the external source selection method (typically an EFIS system). SELECTING AN APPROACH APPROACHES WITH PROCEDURE TURNS MISSED APPROACH 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-55 Navigation APPROACH DESCRIPTION AND INSTRUCTIONS PERFORMING A MISSED APPROACH APPROACH WITH A HOLD Before Reaching a MAP Activating a Missed Approach - Is accomplished on the Flight Plan or Procedures pages. In the Flight Plan page, touching the approach banner displays the Approach Options and Activate Missed Approach feature. Performing a Missed Approach - The GPS/GNX continues to guide along the final approach course after selecting an approach option and automatically sequences the first leg of the missed approach. When the Missed Approach Waypoint Reached pop-up appears, tap Remain Suspended or Activate GPS Missed Approach. When activating an RNAV GPS approach, the option to skip non-required holding patterns during the initial transitions of the approach is available. The Flight Plan Page shows a timer or distance, to fly the outbound portion of a holding pattern. The holding pattern displays on the Map Page and indicate the active leg on the Active Flight Plan pages. As you cross the MAP, a SUSP annunciation appears, indicating the automatic sequencing of approach waypoints is suspended at the MAP. A From indication shows on the CDI and Default NAV Page and course guidance along the final approach course continues. To lose extra altitude or speed by going around the holding pattern again, before crossing the holding waypoint the second time, tap SUSP to manually suspend waypoint sequencing. If already passed the waypoint, re-activate the holding pattern. 3-56 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation APPROACH DESCRIPTION AND INSTRUCTIONS The GPS/GNX guides approaches containing DME arcs (left or right relative to the arc). To activate the DME arc leg manually, the aircraft must be near the arc, as shown in the shaded area below. DME ARC APPROACH RADIUS-TO-FIX
(RF) APPROACH VECTORS-
TO-FINAL The GPS/GNX supports RF legs associated with RNAV RNP 1.0 non-AR (Approval Required) approaches. AC 90-101A defines RF leg as A constant radius circular path, around a defined turn center, that starts and terminates at a fix. An RF leg may be published as part of a procedure. Refer to the aircraft AFMS for specific details regarding RF legs for a specific aircraft. Annunciations and indications are identical for DME arcs and RF legs. Unlike DME arcs, RF legs are not based on a VOR. RF legs may have a larger or smaller radius than DME arcs. Selecting Vectors-To-Final (VTF) keeps the CDI needle off-center until the final approach course starts. When the approach activates, the Map Page shows an extension of the final approach course in magenta. As a reminder that the approach was activated with Vectors-to-Final, VTF appears as part of the active leg on the Map page. The flight plan and the final approach course includes all destination waypoints along the final approach course, including locations before the FAF. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-57 Navigation APPROACH DESCRIPTION AND INSTRUCTIONS I 15NM 1.2NM 1.2NM GPS VLOC ILS APPROACH 2NM GPS VLOC MANUAL FAF ILS approaches have built-in VLOC (VOR/localizer/glideslope) receivers. Prior to reaching the final approach, use the GPS as a guide by selecting the VLOC window and setting the CDI output to VLOC. Automatically set the GPS/GNX to switch the external CDI output from GPS to VLOC when intercepting the final approach course. NOTE: When using the KAP140/KFC225 autopilot, manually enable the outputs, see instructions in Enabling Autopilot Outputs for the King KAP140/KFC225). The GPS/GNX switches to VLOC within 1.2 nm, left or right of the final approach course, after activating the ILS approach and when the correct ILS frequency is in the active VLOC window. The switch ranges from 2 to 15 nm from the FAF. The illustration shows multiple locations along the approach path and the CDI selection
(GPS or VLOC) to expect. In the shaded area, the automatic switch occurs from GPS to VLOC. 3-58 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 APPROACH DESCRIPTION AND INSTRUCTIONS Navigation According to the published chart, the GPS/GNX allows for flying LNAV/VNAV, LNAV, LNAV +V, LPV, LP, and LP +V approaches. L/VNAV - Lateral Navigation/Vertical Navigation. RNAV non-precision approach with vertical guidance. Published LNAV/VNAV minimums. LNAV - Lateral Navigation. RNAV non-precision approach.Published LNAV minimums. LNAV + V - Lateral Navigation with Advisory Vertical Guidance. RNAV non-precision LNAV approach with advisory vertical guidance. The glidepath is a light dashed line on the vertical profile (Jeppesen only) with an associated glidepath angle (usually in the 3.00 degree range) to assist in maintaining a constant vertical glidepath, similar to an ILS glideslope. Published LNAV minimums. LPV - Localizer Performance with Vertical guidance
(LPV) approach. RNAV precision approach. Published LPV minimums. Published LPV minimums. LP - Localizer Performance with no vertical guidance. Published LP minimums. LP + V - Localizer Performance with advisory vertical guidance. This advisory guidance follows the same nature as set by the LNAV +V as shown above. Published LP minimums. The LPV approach has localizer performance and advisory vertical guidance. Flying the LPV approach is similar to the standard ILS approach. RNAV APPROACH LPV APPROACH 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-59 Navigation APPROACH DESCRIPTION AND INSTRUCTIONS 1. Within 31 nm of the destination, the GPS/GNX switches from En Route mode to Terminal mode and the CDI scale transitions from 2 to 1 nm, full-scale deflection. 2. Approaching the IAF, a waypoint message appears on the bottom of the screen. 3. As the IAF distance approaches zero, an Time to Turn advisory message appears and counts down 10 seconds prior to the turn. 4. Approaching the FAF, the GPS/GNX rescales the angle. At 2.0 nm from the FAF, CDI scaling tightens from 1 nm to the approach-defined angular full-scale deflection. 5. Sixty seconds prior to reaching the FAF, the GPS/GNX checks the required Horizontal Alarm Limit (HAL) and Vertical Alarm Limit (VAL) ensuring the GPS position integrity is within approach limits. If the HAL or VAL exceed the limits, the approach downgrades to a non-precision approach indicated by LNAV on the moving map. A downgraded message appears and the glideslope indicator flags, until the message is viewed. Continue the approach using LNAV non-precision minimums (if applicable). If GPS integrity does not meet the non-precision HAL limits, the GPS/GNX messages to abort the approach. After acknowledging the message, the unit reverts to terminal limits of 1 nm to support navigation to the missed approach. After the aircraft has passed the FAF, a loss of WAAS integrity causes the approach to abort instead of downgrade. PERFORMING A LPV APPROACH 6. Capture the glideslope (the same as for an ILS glideslope). 7. When crossing the FAF, the waypoint sequences to the MAP (e.g., RW31, the runway threshold). With the needle on the external CDI (or HSI) centered, fly toward the MAP, observing the altitude minimums published on the approach plate. 8. In the Map Page, the final course segment shows in magenta as the active leg of the flight plan. 9. Approaching the MAP, an Arriving at Waypoint message appears on the bottom of the screen. 10.As the GPS/GNX crosses the MAP and sequencing suspends, prepare the aircraft for a missed approach operation. Tap Unsuspend to sequence to the missed approach procedure. 11.Using the GPS/GNX guidance, fly to the MAHP and hold. 3-60 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation APPROACH DESCRIPTION AND INSTRUCTIONS LP APPROACH An LP approach uses SBAS accuracy, similar to an LNAV approach with more precision, and has lateral accuracy like an LPV approach. Angular scaling is similar to a localizer approach. Most LP approaches have step down altitudes associated with them. The approach still results in an MDA and missed approach point. The LP+V approach has advisory vertical guidance and at each step down the pilot must descend to the correct altitude. The approach results in an MDA and missed approach point. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-61 Navigation APPROACH DESCRIPTION AND INSTRUCTIONS 1. Within 30 nm of the destination, the GPS/GNX switches from En Route to Terminal mode and the CDI scale transitions from 2.0 to 1.0 nm, full-scale deflection. 2. Approaching the IAF, a turn direction message appears on the bottom of the screen. 3. As the distance (DIST) to the IAF approaches zero, a time to turn advisory message appears that counts down 10 seconds prior to the turn. 4. Approaching the FAF, the GPS/GNX rescales the angle. At 2 nm from the FAF, CDI scaling tightens from either 2 or 0.3 nm, full-scale deflection, whichever is smaller. 5. Sixty seconds before reaching the FAF, the GPS/GNX checks the required Horizontal Alarm Limit (HAL) and the GPS position integrity is within approach limits. If the HAL or VAL exceed the limits, the approach downgrades to a non-precision approach indicated by LNAV on the moving map, or the approach aborts. A downgraded message appears and the NAV indicator flags. Continue the approach using LNAV non-precision minimums, (if applicable). If GPS limits does not meet non-precision HAL limits, the GPS/GNX messages to abort the approach. The unit reverts to terminal limits of 1 nm to support navigation to the missed approach. If the approach is indicating an LP +V, and vertical guidance not within tolerances, the advisory vertical guidance could be removed without annunciation. This is not a downgrade, and the approach can fly to LP minimums. PERFORMING A LP APPROACH 6. When crossing the FAF, the destination sequences to the MAP. With the needle on the external CDI (or HSI) centered, fly toward the MAP, observing the altitude minimums published on the approach plate. 7. When crossing the FAF, the waypoint sequences to the MAP
(e.g., RW31, the runway threshold). With the needle on the external CDI (or HSI) centered, fly toward the MAP, observing the altitude minimums published on the approach plate. 8. In the Map Page, the final course segment shows in magenta as the active leg of the flight plan. 9. Approaching the MAP, an Arriving at Waypoint message appears on the bottom of the screen. 10.As the GPS/GNX crosses the MAP and sequencing suspends, prepare the aircraft for a missed approach operation. Tap Unsuspend to sequence to the missed approach procedure. For missed approaches with heading legs, fly manually until the first active course leg is reached. 11.Using the guidance provided by the unit, fly to the MAHP and hold. 3-62 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 APPROACH DESCRIPTION AND INSTRUCTIONS Navigation VISUAL APPROACH Not all airports in the database support visual approaches. The GPS/GNX generates visual approaches, provides advisory horizontal and optional vertical guidance for the runway, and helps stabilize the runway approach. Published data is used to determine the visual approach GPA and TCH for the selected runway. If no published data is available, the default is 3 GPA and 50 FT TCH.Lateral guidance is always provided for visual approaches. There are three different methods for loading and activating visual approaches. For methods 1 and 2, tapping Visual opens a list of available visual approaches. Once selected, the visual approach immediately loads and becomes active. Method 1 - On the map, tap Visual. When the aircraft is within 10 nm of the destination airport the Visual key appears on the display. Method 2 - On the bottom edge of the screen, tap Visual. This key is visible when a visual approach supported airport is selected on the map during Pan mode. Method 3 - Visual approaches load from the PROC - Approach page or the Airport Info - Procedures tab (similar to published instrument approaches). For information on how to use this page, refer to Selecting an Approach. After a visual approach loads, a confirmation pop-up shows, detailing the glidepath angle (GPA) and threshold crossing height
(TCH) when vertical guidance is available. Terrain and obstacle obstructions along the approach path determine the availability of vertical guidance advisories for visual approaches. A valid terrain database is required. If no known obstructions are within the approach path, vertical guidance is provided to a maximum distance of 28 nm from the runway. If there are known obstructions further than 3 nm, but within the 28 nm maximum distance from the runway along the approach, vertical guidance is limited to the approach path after crossing the known obstructions. After loading the approach, a shortened magenta line shows on the map. If obstructions are within 3 nm to the runway, along the approach path, advisory vertical guidance is not provided. Only external CDI/VDI displays provide vertical deviation indications. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-63 Navigation POINTS TO REMEMBER FOR ALL PROCEDURES For all procedures, make sure to check the runway, transition, and all waypoints. Only one departure, arrival, or approach is loaded in a flight plan at a time. Selecting a new departure, arrival, or approach in the active flight plan replaces the existing. Selecting the departure, arrival, approach, transition waypoint, and runway defines a route. Vector-only departures are not available in the Procedures database. Advisory climb altitudes for SIDs may not match charted altitudes. Do not rely solely on advisory altitudes. The GPS/GNX Map page is designed to complement approach plates and improve situational awareness throughout the approach. Always fly an approach as it appears on the approach plate. SUSP - While flying the approach, the unit automatically sequences through each leg of the approach unless SUSP appears at the annunciation bar at the bottom of the display. SUSP indicates the automatic sequencing of approach waypoints is suspended on the current leg. SUSP typically appears at holding patterns, upon crossing the missed approach point (MAP), for Climb to Altitude legs, and for Hold to Altitude legs. For roll steering autopilots: Roll steering terminates when Approach mode is selected on the autopilot and is available once the missed approach initiates. If Vectors-to-Final is activated while on the FROM side of the FAF, automatic waypoint sequencing suspends and the SUSP annunciation appears. Automatic waypoint sequencing resumes once the aircraft is on the TO side of the FAF and within full-scale deflection. Most legs are TO legs, the TO/FROM flag on the CDI indicates TO and the Distance field on the flight plan decreases as you navigate along the leg. Some procedures include legs which are FROM legs. On these legs, the TO/FROM flag on the CDI indicates FROM and the Distance field on the flight plan increases as you navigate the leg. FROM legs are typically found on procedure turns and on some missed approach procedures. 3-64 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Navigation CAUTION NOT ALL AUTOPILOTS FOLLOW GUIDANCE WHEN ON A HEADING LEG USING NAV, GPSS, OR APR MODE ON THE AUTOPILOT. SOME AUTOPILOTS REVERT TO A ROLL ONLY OR WINGS LEVEL MODE ON THESE LEG TYPES. THE PILOT MUST ENGAGE THE HEADING MODE OF THE AUTOPILOT AND SET THE HEADING BUG APPROPRIATELY IN ORDER TO USE THE AUTOPILOT ON THESE LEGS. CAUTION IDENTIFY HEADING LEGS FOR PROCEDURES BY HDG XXX IN WHITE ON THE FLIGHT PLAN PAGE. ENABLING AUTOPILOT OUTPUTS FOR THE KING KAP140/KFC225 After being prompted during the approach procedure, the pilot must manually activate the autopilot outputs for the King KAP140/KFC225 autopilot units. After enabling the autopilot outputs, the GPS provides guidance information consistent with what the autopilot expects (i.e., angular CDI scaling and glideslope capture for an LPV or other vertically guided GPS approach). 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 3-65 INTENTIONALLY LEFT BLANK 3-66 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 4 Planning Planning VERTICAL CALCULATOR 4.1 4.2 FUEL PLANNING 4.3 VCALC Page..........................................................................................4-3 VCALC Setup ........................................................................................4-4 Fuel Planning Page ................................................................................4-5 Fuel Planning Modes ......................................................................4-5 Computing Fuel Statistics ...............................................................4-7 4.3.1 4.3.2 DALT/TAS/WIND CALCULATOR 4.4 DALT/TAS/Wind Page ............................................................................4-8 Editing Input Data ..........................................................................4-8 Computing DALT/TAS/Wind Statistics ...........................................4-10 4.4.1 4.4.2 RAIM PREDICTION 4.5 RAIM Prediction Page ..........................................................................4-11 Calculating RAIM Status ...............................................................4-12 RAIM Status Indications ................................................................4-12 4.5.1 4.5.2 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 4-1 Planning PLANNING APPS & FUNCTIONS This section describes features that make flight planning easier and more efficient. Planning apps and setup functions reside in the system Utilities.
[1]
[2]
[3]
[4]
[5]
Point-to-Point mode only. Flight Plan mode only. From key not selectable when Present Position (P.POS) function is active. Function not selectable when sensor data in use. Indicates pressure altitude when sensor data in use. 4-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Vertical Calculator Calculate time to TOD and vertical speed required to reach target altitude at the specified location. Planning WARNING DO NOT RELY ON VCALC MESSAGES AS THE ONLY MEANS OF EITHER AVOIDING TERRAIN/OBSTACLES OR FOLLOWING ATC GUIDANCE. VCALC PROVIDES ADVISORY INFORMATION ONLY AND MUST BE USED IN CONCERT WITH ALL OTHER AVAILABLE NAVIGATION DATA SOURCES. FEATURE LIMITATIONS This feature is inhibited when:
Groundspeed is < 35 knots No active flight plan or direct-to destination is available One of the following modes is active: SUSP, Vectors-to-Final, OBS Navigating to a waypoint after the FAF 4.1 VCALC Page The Vertical Calculator (VCALC) feature is helpful when you want to descend to a certain altitude near an airport. Create a 3-D profile to guide you from your present position and altitude to a final
(target) altitude at a specified location. Once defined, you may configure message alerts and additional data on the Map page to stay informed of your progress. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 4-3 Planning SELECTION Target ALT Altitude Type VS Profile DESCRIPTION Specify the final (target) altitude for the course Altitude reference used for VCALC calculations Toggles between MSL and Above WPT Above WPT is available for airports only Specify the vertical speed value Distance value representing the geographical location at the Offset target altitude Before/After Target Waypoint Distance is measured from the target waypoint Indicates whether the offset distance defines a point before or after reaching the target waypoint After indication not available for the last destination in flight plan Reference location specified in the flight plan or active direct-to that will be used for planning a descent When using a flight plan, the target waypoint is a reference that can be specified from the waypoints in the flight plan Last waypoint in the flight plan is the default target setting STATUS VCALC status messages display here. VS REQUIRED Displays the vertical speed required to reach the target altitude at the specified offset. 4.2 VCALC Setup Tap Menu to access controls for:
Restoring default page settings Displaying VCALC related advisory messages RESTORE DEFAULTS Resets VCALC page settings to their default values. Excludes Target Waypoint. DISPLAY MESSAGES Allows VCALC related advisory messages to display on the Messages page. 4-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Fuel Planning View fuel conditions along any flight plan (active or programmed) or between two waypoints (including the active direct-to). Planning 4.3 Fuel Planning Page The fuel planning feature computes fuel conditions based on route, ground speed, fuel on board, and fuel flow. 4.3.1 Fuel Planning Modes Tapping Mode toggles the active fuel planning mode between Point to Point and Flight Plan. Point to Point is the default mode setting. POINT-TO-POINT MODE FLIGHT PLAN MODE Calculate fuel between two waypoints in the database, or between the aircrafts present position and a selected waypoint. Calculate fuel for a specific flight plan leg, or for the cumulative flight plan. Use the mode specific controls to define the flight path (leg or route). Required input values are dependent upon mode selection. Fuel on board, fuel flow, and ground speed data are required independent of mode selection. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 4-5 Planning MODE SELECTIONS MODE SELECTION DESCRIPTION Point-to-
Point P. Position From To Enters the current aircraft coordinates as the departure location (or From waypoint) Aircraft latitude and longitude fields replace the From waypoint key Specify a waypoint from the database as the departure location (or From waypoint) Not available when P. Position is active Specify a waypoint from the database as the destination (or To waypoint) Opens a list of available flight plans Options include the active flight plan or one Flight Plan from the catalog Flight Plan Leg Defaults to the active flight plan if no selection is made Options dependent on flight plan selection Defaults to cumulative leg option if no selection is made Fuel on Board Specify the amount of fuel on board (gallons) This amount decreases once per second Both Fuel Flow Use Sensor Data based on specified fuel flow value Specify the current fuel flow rate
(gallons per hour) Display current GPS ground speed data Ground Speed Specify ground speed This function is display only when sensor data is in use Adjust fuel on board and fuel flow values as necessary to account for changes in performance. 4-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 4.3.2 Computing Fuel Statistics Compute and display fuel data based on the selected fuel planning mode and specified input values. Planning Statistics for the selected leg or route display on a dedicated data page. This information is for planning purposes only. Tap Next or Prev to view statistics for other legs in the flight plan (if applicable). Statistics include:
Fuel required for leg Reserve after leg Efficiency Fuel after leg Range Endurance COMPUTE FUEL STATISTICS 1. Select a fuel planning mode. 2. Define a leg or route. If Flight Plan is set, select the flight plan and leg. If Point to Point is set, select From and To waypoints, or use the aircrafts current position as the From waypoint. 3. Specify the amount of fuel on board and average fuel flow rate. 4. Specify ground speed or elect to use sensor data. 5. Tap Compute. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 4-7 Planning DALT/TAS/Wind Calculator Calculate density altitude, true airspeed, and winds. FEATURE REQUIREMENTS Fuel/air data computer (pressure altitude) Valid sensor data 4.4 DALT/TAS/Wind Page This feature indicates the theoretical altitude at which the aircraft performs based on several input variables. 4.4.1 Editing Input Data Available selections are dependent on sensor data use. Not Selectable 4-8 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Planning SELECTION Indicated ALT BARO CAS TAT HDG TRK Use Sensor Data Ground Speed FUNCTION Specify indicated altitude value [1] [2]
Use +/- keys to indicate above or below sea level Multually exclusive with Pressure ALT Specify barometric pressure value [2]
Specify calibrated air speed value [2]
Specify true air temperature Use +/- keys to indicate above or below 0 Specify heading value Specify track angle value [2]
Replaces indicated altitude with pressure altitude Inputs reference values received from received from fuel/air data computer Excludes TAT and HDG Specify ground speed [2]
[1]
[2]
Toggles to Pressure ALT indication when sensor data in use. Not selectable when sensor data in use. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 4-9 Planning 4.4.2 Computing DALT/TAS/Wind Statistics Compute and display density alititude and current wind conditions. Calculations are based on current input values. Statistics display on a dedicated data page. This information is for planning purposes only. Dashes indicate when input values are invalid. DENSITY ALTITUDE Pressure altitude corrected for nonstandard temperature Units display in increments of ten WIND DATA Wind direction and speed Headwind Tailwind True air speed Density altitude and true airspeed calculations are dependent on indicated altitude, barometric pressure, and total air temperature. Wind data calculations are dependent on true airspeed, aircraft heading, and ground speed. Wind direction is dependent on the NAV Angle system unit setting. If wind speed is zero, wind direction displays as dashes. 4-10 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Planning RAIM Prediction Determine GPS coverage availability for the current location or a specified waypoint at any time and date. RAIM performs checks to ensure the navigator has adequate satellite geometry during flight. FEATURE REQUIREMENTS Active flight plan and off-route direct-to waypoint (arrival date and time) FEATURE LIMITATIONS FAAs TSO requirements for non-precision approaches specify significantly greater satellite coverage than is required during other phases of flight. As a result, RAIM may not be available for all approaches. This feature predicts the availability of fault detection integrity. It cannot predict the availability of LPV or L/VNAV approaches. Use a non-GPS based approach when RAIM is not available. For LPV approach availability, visit the FAAs NOTAM service. 4.5 RAIM Prediction Page The RAIM feature can help you plan for a pending flight by confirming GPS operation before an approach. RAIM FEATURES Automatically monitors RAIM during approach operations and warns when RAIM is not available Near 100% availability in Oceanic, En route, and Terminal phases of flight WP Identifier, Arrival Date, and Arrival Time setup keys Compute RAIM key 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 4-11 Planning 4.5.1 Calculating RAIM Status Calculate RAIM availability for the specified waypoint, date, and time. Prediction results annunciate once the calculation is complete. WAYPOINT SEARCH OPTIONS A WP Identifier key allows you to specify a destination airport using multiple search options. ARRIVAL DATE & TIME These setup controls allow you to set the expected date and time of arrival at the specified airport. Values default to the current date and time in the absence of an active flight plan and off-route direct-to waypoint. CHECK RAIM AVAILABILITY 1. Specify a destination waypoint. 2. Specify the expected arrival date and time. 3. Tap Compute RAIM. 4.5.2 RAIM Status Indications Dashes indicate when the destination waypoint is invalid. ANNUNCIATION DESCRIPTION Computing Status is pending. RAIM Available RAIM is available at the specified waypoint. RAIM Unavailable RAIM is not available at the specified waypoint. 4-12 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5 Hazard Awareness Hazard Awareness WEATHER AWARENESS 5.1 5.1.1 5.1.2 5.1.3 Data Transmission Limitations................................................................5-3 Line of Sight Reception...................................................................5-3 Per FAA TSO-C157b .......................................................................5-4 NOTAM 30-Day Limitation..............................................................5-4 5.2 Weather Display ....................................................................................5-5 5.3 Weather Setup ......................................................................................5-7 5.4 Weather Products..................................................................................5-8 Product Age ...................................................................................5-9 5.4.1 Legends........................................................................................5-10 5.4.2 5.4.3 FIS-B NEXRAD...............................................................................5-11 5.4.4 METARs and TAFs.........................................................................5-13 AIRMETS ......................................................................................5-14 5.4.5 SIGMETS ......................................................................................5-15 5.4.6 5.4.7 PIREPs...........................................................................................5-15 5.4.8 Winds Aloft ..................................................................................5-16 5.4.9 TFRs .............................................................................................5-16 Raw Text Reports.................................................................................5-17 FIS-B Ground Reception Status.............................................................5-17 5.5 5.6 TRAFFIC AWARENESS Traffic Applications..............................................................................5-18 5.7 Traffic Display......................................................................................5-19 5.8 5.9 Traffic Interactions...............................................................................5-22 5.10 Traffic Setup........................................................................................5-23 5.10.1 Traffic Test ...................................................................................5-24 5.10.2 Motion Vectors.............................................................................5-24 5.10.3 Altitude Filtering...........................................................................5-25 5.11 Status Annunciations...........................................................................5-25 5.12 Traffic Alerting.....................................................................................5-26 TERRAIN AWARENESS 5.13 Terrain Configurations.........................................................................5-27 5.13.1 GPS Altitude for Terrain................................................................5-27 5.14 Database Limitations............................................................................5-29 5.15 Terrain Display.....................................................................................5-30 5.16 Terrain Setup.......................................................................................5-32 5.17 Terrain Proximity..................................................................................5-33 5.17.1 Terrain Elevation Depictions..........................................................5-34 5.17.2 Obstacle Elevation Depictions .......................................................5-35 5.18 Terrain Alerting ...................................................................................5-37 5.18.1 Alert Types ...................................................................................5-37 5.18.2 Alerting Thresholds.......................................................................5-38 5.18.3 Inhibiting PDA & Terrain-FLTA Alerts.............................................5-39 5.18.4 PDA & Terrain-FLTA Alerts ............................................................5-40 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-1 Hazard Awareness AWARENESS APPS AND FUNCTIONS Menu selections vary based on features and optional equipment installed with Garmin avionics. 5-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Weather Awareness Hazard Awareness WARNING DO NOT RELY SOLELY ON DATALINK WEATHER FOR WEATHER INFORMATION. DATALINK WEATHER PROVIDES A SNAPSHOT IN TIME. IT MAY NOT ACCURATELY REFLECT THE CURRENT WEATHER SITUATION. NOTE Datalink weather is not intended to replace weather briefings or in-flight weather reports from AFSS or ATC. The FAA provides FIS-B as a Surveillance and Broadcast Service operating on the UAT
(978 MHz) frequency band. FIS-B uses a network of FAA-operated ground-based transceivers to transmit weather datalink information to the aircrafts receiver on a scheduled continuous basis. The Flight Information Service-Broadcast (FIS-B) Weather service is freely available for aircraft equipped with a capable datalink universal access transceiver (UAT). Ground stations provide uninterrupted services for the majority of the contiguous U.S., Hawaii, Guam, Puerto Rico, and parts of Alaska. No weather subscription service is required. For the latest FAA ground station coverage information, visit:
www.faa.gov/nextgen/programs/adsb/
5.1 Data Transmission Limitations FIS-B broadcasts provide weather data in a repeating cycle which may take several minutes to completely transmit all available weather data. Therefore, not all weather data may be immediately present upon initial FIS-B signal acquisition. 5.1.1 Line of Sight Reception To receive FIS-B weather information, the aircrafts datalink receiver must be within range and line-of-sight of an operating ground-based transceiver. Reception may be affected by altitude, terrain, and other factors. Per the FAA, much of the United States has FIS-B In airborne coverage at and above 3,000 feet AGL. Terminal coverage is available at altitudes below 3,000 feet AGL and is available when flying near approximately 235 major U.S. airports. Surface coverage allows FIS-B ground reception at approximately 36 major U.S. airports. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-3 Hazard Awareness 5.1.2 Per FAA TSO-C157b FIS-B information may be used for pilot planning decisions focused on updating the pilot's awareness of the dynamic flight environment; including avoiding areas of inclement weather that are beyond visual range and pilot near-term decisions where poor visibility precludes visual acquisition of inclement weather. FIS-B weather and NAS status information may be used as follows:
a. To promote pilot awareness of ownship location with respect to reported weather, including hazardous meteorological conditions; NAS status indicators to enhance pilot planning decisions; and pilot near-term decision-making. b. To cue the pilot to communicate with Air Traffic Control, Flight Service Station specialist, operator dispatch, or airline operations control center for general and mission critical meteorological information, NAS status conditions, or both. FIS-B information, including weather information, NOTAMs, and TFR areas, are intended for the sole purpose of assisting in long-/near-term planning and decision making. The system lacks sufficient resolution and updating capability necessary for aerial maneuvering associated with immediate decisions. In extreme scenarios, the oldest weather radar data on the display can be up to 15 to 20 minutes older than the displays age indication for that weather radar data. Therefore, do not attempt to use FIS-B weather information to maneuver the aircraft at minimum safe distances from hazardous weather. FIS-B information must not be used in lieu of a standard preflight briefing. c. [Displaying FIS-B weather using GDL 88, or GTX 345 Class 1 transceivers]
FIS-B uplink is a subscription-free FIS broadcast managed by FAA SBS. It provides an FAA approved source for METAR, TAF, WINDS, PIREPs, NEXRAD, AIRMET, SIGMET, and TFR information, and is subject to the broadcast range limits for these products. FIS-B uplink is not an FAA approved source for NOTAMs. 5.1.3 NOTAM 30-Day Limitation NOTAMs received via FIS-B may not be a complete listing. Active NOTAMs are removed from the FIS-B data stream 30 days after issuance. Before flight, review all necessary aeronautical and meteorological information from official sources. For more information, consult AC 00-63. 5-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.2 Weather Display Hazard Awareness FIS-B weather data displays as overlays on the dedicated weather page and Map page. No pilot action is required to receive FIS-B weather information. FEATURE REQUIREMENTS FIS-B GPS 175 with UAT receiver (GDL 88, GTX 345) or GNX 375 1 2 3 4 5 1 2 3 4 7 6 FIS-B WX Page Aircraft Symbol Depicts current aircraft position and orientation. Tip represents actual aircraft location Symbol type is dependent upon configuration Absent if a GPS source is not available North Indicator Indicates True north. Page Orientation Label Options include:
North Up orients map to True north. Heading Up orients map to current aircraft heading (requires heading data source interface). Track Up orients map to current aircraft GPS track. Basemap Presents a graphical depiction of land and water data. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-5 Hazard Awareness 5 6 7 NEXRAD Controls Includes source key and animation control. Source options include CONUS, Regional, or Combined. Zoom Scale Value adjusts with changes to the current magnification. Product Timestamp Approximate time of data collection for each active weather product. WX INFO BANNER Tapping any weather icon displays an information banner. When applicable, a pop-up window displays additional data. Pan mode symbol Bearing and distance to map pointer from aircrafts current position Cloud Top altitudes Pan location Report data Tapping an airport icon displays information about local weather conditions. 5-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.3 Weather Setup Hazard Awareness Tap Menu to access weather setup options. This page also provides access to the ADS-B Status page, where controls for enabling all weather products, viewing raw text reports, and checking ground reception status reside. To enable all weather products, tap FIS-B WX Status > FIS-B Enabled. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-7 Hazard Awareness 5.4 Weather Products WEATHER DISPLAY FIS-B WX PAGE WX POP-UP TEXT MAP PAGE WAYPT INFO FIS-B WEATHER PRODUCT AIRMET METAR w/Decoding NEXRAD NOTAMS PIREP AIRMET SIGMET TAF Temps Aloft TFR Winds Aloft Graphic Product Present 5-8 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.4.1 Product Age NOTE Data contained within a composite weather product may be olderthan its weather product age and should never be considered current. A timestamp identifies the approximate time of data collection for each weather product. For quick reference, the age of each active weather product is calculated and shown in a color-coded side bar on the FIS-B Weather page. TIMESTAMP COLOR DEFINITIONS Green Weather product is considered current. Its age is newer than half its expiration time. Tapping the Timestamp window displays time for all green colored weather products. Amber Weather product is considered stale. Its age is older than half its expiration time. A weather product may be amber when its issue date and time occurs in the future by more than the complete expiration time for the requested weather product. (e.g., some TFRs) Gray Received weather product data is expired, has not been received, or is not supported at the selected altitude. No Data or ALT UNAVBL displays next to the weather product title. BROADCAST RATES AND REFRESH INTERVALS The broadcast rate represents the periodic interval at which the ADS-B ground stations transmit the weather product for reception. Weather data with the same time stamp may be received multiple times in a row. Broadcast intervals are typically higher than the weather product update intervals. FIS-B update intervals report the frequency at which weather products refresh with new data from reporting stations, ground sensors,and weather product compilations. FIS-B transmission intervals report the frequency at which weather products are broadcast by the ADS-B ground stations network. Contact the appropriate weather product supplier for current broadcast rates and refresh intervals. Graphically dense weather products may take several minutes to receive completely. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-9 Hazard Awareness 5.4.2 Legends A scrollable legend provides relevant product colors and symbols. Definitions are organized by product function. Tap Menu > Legend, and use the inner knob to view the available product legends. 5-10 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.4.3 FIS-B NEXRAD Hazard Awareness WARNING NEVER USE NEXRAD WEATHER FOR MANEUVERING IN, NEAR, OR AROUND AREAS OF HAZARDOUS WEATHER. NEXRAD IMAGES ARE SNAPSHOTS OF PAST WEATHER DATA. THEY ARE NOT SAFE FOR USE AS REAL TIME DEPICTIONS OF NEARBY WEATHER ACTIVITY. CONUS NEXRAD Regional NEXRAD NEXRAD weather radar displays a mosaic of precipitation data, colored according to reflectivity. Composite reflectivity images depict the highest radar energy received from multiple antenna tilt angles at various altitudes. Base reflectivity images depict radar returns from the lowest antenna tilt angle. The precipitation intensity level reflected by each pixel represents the highest level of composite radar reflectivity data sampled in that location. A clear understanding of ground-based Doppler weather radar capabilities will allow you to interpret the NEXRAD weather imagery in the safest way possible. The National Oceanic and Atmospheric Administration hosts a description of the technology on its website: https://www.weather.gov/jetstream/doppler_intro RADAR DATA ANIMATIONS To depict trending weather movements over time, an animation function stitches the last three to six received radar images together in sequence, from oldest to newest, and replays them on a continuous loop. Play and stop controls are active when three or more NEXRAD images are available for playback. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-11 Hazard Awareness CONUS & REGIONAL NEXRAD FIS-B NEXRAD is uplinked to the aircraft as two separate weather products:
CONUS and Regional NEXRAD. Both products display individually or simultaneously, separated by a white hash-marked boundary, based on source selection. Regional Echo Block Regional Boundary CONUS Echo Block Depending on the locations of received FIS-B ground stations, Regional NEXRAD coverage can extend as far as 250 nm around an aircrafts position. Aircraft flying at higher altitudes typically receive data from more ground stations than aircraft flying at low altitudes. FIS-B NEXRAD does not differentiate between liquid and frozen precipitation types. CONUS & Regional NEXRAD Combined Source options are selectable from the weather setup menu or the NEXRAD key at the bottom left of the FIS-B Weather page. The key label changes to reflect the active source. CONUS SOURCE CONUS Regional Regional Combined DESCRIPTION Large, low-resolution weather image for the entire continental U.S. Pixels are 7.5 min (7.5 nm = 13.89 km) wide by 5 min
(5 nm = 9.26 km) wide High-resolution weather image with limited range, centered around each broadcasting ground station Pixels are 1.5 min (1.5 nm = 2.78 km) wide by 1 min
(1 nm = 1.852 km) tall Each weather pixel varies with latitude. Above 60 latitude, pixel block width doubles to 3 min/nm for regional maps Both CONUS and Regional NEXRAD images display Combined simultaneously White hash mark indicates regional boundary 5-12 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.4.4 METARs and TAFs METAR and TAF reports provide information on current and forecast conditions. Colored METAR flags display when a METAR reporting station is matched with a corresponding navigation database identifier. When selected, the METAR is decoded and shows above the original METAR text. METARs are provided only in areas covered by the navigation database currently loaded. METAR SYMBOL DESCRIPTION VFR:
Ceiling greater than 3000 ft. AGL and visibility greater than five miles. Marginal VFR:
Ceiling 1000 to 3000 ft. AGL and/or visibility three to five miles. IFR: Ceiling 500 to 1000 ft. AGL and/or visibility one to three miles. Low IFR:
Ceiling below 500 ft. AGL and/or visibility less than one mile. Unknown 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-13 Hazard Awareness 5.4.5 AIRMETS The AIRMET overlay draws the geographical boundaries of received AIRMETS on the dedicated weather page. AIRMETS include advisories of weather that may be particularly hazardous to single engine, light aircraft and VFR pilots. Tap an AIRMET graphic area to view the detailed AIRMET report text. AIRMET TYPES Icing Turbulence IFR MTN OBSR Surface Winds Areas of moderate airframe icing including areal extent Areas of moderate turbulence including vertical extent Weather conditions with ceilings <1,000 ft and/or visibility <3 mi Widespread mountain obscuration due to clouds, precipitation, smoke, haze, mist, or fog Sustained surface winds >30 kt and/or potential non-convective wind sheer below 2,000 ft AGL 5-14 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.4.6 SIGMETS The SIGMET overlay draws the geographical boundaries of received SIGMETs on the dedicated weather page. Convective and non-convective SIGnificant METerological Information combine in a textual report and display graphically for the observed or forecast region. The SIGMET text displays when the graphical SIGMET is selected. Touch the graphical depiction for additional information. 5.4.7 PIREPs PIREPs are pilot-generated weather reports that may contain non-forecast adverse weather conditions, such as low in-flight visibility, icing conditions, wind shear, and turbulence. PIREPs are issued as either Routine (UA) or Urgent (UUA). Routine display with a blue map icon and urgent display with an amber icon. Selecting either icon displays a report window. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-15 Hazard Awareness 5.4.8 Winds Aloft Indicates wind speed and direction for the specified altitude. Altitude range: surface to 45,000 ft The wind barb extends outward from the reporting location dot in the direction of wind origination. Plus and minus keys adjust altitude in 3,000 ft increments for altitude-based weather products. 5.4.9 TFRs WARNING DO NOT EXCLUSIVELY USE DATALINK SERVICES FOR TFR INFORMATION. TFR DEPICTIONS MAY NOT BE A COMPLETE LISTING AND MAY VARY BETWEEN COCKPIT DEVICES. ALWAYS CONFIRM TFR INFORMATION WITH OFFICIAL SOURCES SUCH AS FLIGHT SERVICE STATIONS OR AIR TRAFFIC CONTROL. TFRs identify areas of airspace where aircraft are temporarily restricted from operating. TFRs are routinely issued for occurrences such as dignitary visits, military activities, and forest fires. Tapping the TFR graphic on the weather page brings up textual details for the selected TFR. 5-16 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.5 Raw Text Reports Hazard Awareness To display raw textual data for a FIS-B product:
1. Open the FIS-B Status page. 2. Tap Raw Text Reports. 3. Select a weather product. The latest uploaded data for the product displays on a dedicated page. 5.6 FIS-B Ground Reception Status FIS-B ground station transmission status may be monitored when the UAT transceiver is powered and the FIS-B weather option is selected. A current report lists completeness of NOTAM-TFR, AIRMET, and SIGMET data for all received ground stations. For the received ground station, the station range field indicates complete/incomplete status only for those products within the ground stations range. To view the FIS-B Reception page, tap Menu > Radio Stations. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-17 Hazard Awareness Traffic Awareness FEATURE REQUIREMENTS External ADS-B In product (GPS 175) FEATURE LIMITATIONS Available functions and alerting features are dependent upon the ADS-B traffic system source ADS-B FEATURES Runway and taxiway depiction during SURF mode
(< 2 nm range scale) Selectable traffic icons display intruder and vector information Customizable motion vectors (type, duration) Airborne and surface mode options Traffic Applications 5.7 FEATURE REQUIREMENTS Aviation database (SURF only) The Traffic system supports AIRB and SURF applications. AIRB SURF Airborne traffic application Active in the en route environment
(>5 nm and >1,500 ft above the nearest airport) Airborne and ground traffic application Active on ground or within the terminal environment
(<5 nm and <1,500 ft above field elevation) Runway and taxiway depictions when the zoom scale is <2 nm
(Traffic page only) Ground vehicle depictions 5-18 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.8 Traffic Display Collision avoidance and traffic surveillance data display on the dedicated Traffic page and as overlays on the Map page. Hazard Awareness The Traffic page displays intruding traffic in relation to the current position and altitude of the aircraft without clutter from other data. Traffic Page Ownship Icon Depicts current aircraft position. Nose of the ownship is the actual ownship location Unlike the configured aircraft symbol on map displays, ownship icon is always a directional arrow Page Orientation Label Orientations:
Heading Up (HDG UP) during normal operation Track Up (TRK UP) if there is no valid heading Range Ring Outer ring represents selected range Range options: 2,4, 6, 12, 24, 48 Altitude Separation Value Indicates when an intruder is above or below the ownship. Value appears above the traffic symbol Plus or minus sign denotes higher or lower altitude 1 2 3 4 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-19 Hazard Awareness 5 6 Vertical Trend Arrow Active when an intruder is climbing or descending at a vertical speed greater than 500 fpm. Intruding Aircraft Symbol Actual intruder location varies according to symbol type. Tip of directional symbols Center of non-directional symbols OFF SCALE TRAFFIC ALERTS Off scale (out of range) traffic alerts are depicted as half yellow symbols on the outermost range ring at the correct bearing. TRAFFIC OVERLAY STATUS ICON Indicates the status of displayed traffic on the Map page. The icon is absent when the map is not displaying traffic. TRAFFIC GROUPS When traffic grouping is active, traffic within close proximity of each other may display as a group. Asterisk indicates that the target belongs to a group Relative proximity of the closest target determines color Depiction is of the most immediate threat TRAFFIC UNITS PARAMETER Altitude Distance UNITS ft nm Traffic units are always uniform. Selections on the System Units page do not affect the traffic display. 5-20 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness ADS-B TRAFFIC SYMBOLS Traffic Information is for advisory use only. The pilot is responsible for identifying and avoiding traffic conflict. SYMBOL DESCRIPTION SYMBOL DESCRIPTION Basic Directional Proximate Directional Basic Non-directional Proximate Non-directional Basic Off-scale Selected Directional
(On-Ground) Non-directional
(On-Ground) Proximate Directional
(On-Ground) Proximate Non-directional
(On-Ground) Directional Surface Vehicle Proximate Off-scale Selected Non-directional Alerted Off-scale Non-directional Alerted Traffic Directional Alerted Traffic Off-scale Directional Alerted Traffic Non-directional Surface Vehicle 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-21 Hazard Awareness 5.9 Traffic Interactions Selecting a traffic symbol displays information about the aircraft in the upper right corner of the page. Selections remain active through altitude filtering, zoom scale, and page changes. SELECTED TRAFFIC INFORMATION Registration/call sign Vehicle type Closure rate Track Ground speed Tapping Next repeatedly steps through multiple symbols spaced closely together. Selected Traffic Selected Traffic Info Next Key 5-22 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.10 Traffic Setup Hazard Awareness Tap Menu to access pilot selectable settings and the self-test and ADS-B display functions. SELECTION ADS-B Display FUNCTION Enable automatic mode selection. System selects between Surface and Airborne depending on the state of the aircraft. Selecting Off disables the function. Test Initiate a test of the traffic system. Not available when ADS-B Display function is active. Motion Vector Select motion vector type. Selecting Off removes all motion vectors from the display. Options: Absolute Relative Off Vector Duration Select the amount of time represented by the endpoint. Options range from 0 seconds to 5 minutes. A longer duration results in a longer vector. Altitude Filter Select filter range. Options: Normal Above Below Unrestricted Traffic Grouping Display targets in close proximity as a group. Asterisk depicts the highest priority target. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-23 Hazard Awareness 5.10.1 FEATURE LIMITATIONS Traffic Test Available only when the aircraft is on ground (i.e., standby mode) and ADS-B Display is off The test function displays a test pattern on the Traffic page. This option is accessible via the Traffic menu. The system automatically returns to normal operating mode once the test is complete. 5.10.2 Motion Vectors FEATURE LIMITATIONS Motion vectors display on the Traffic page only A motion vector is a line extending from the nose of an intruder icon. Its orientation represents the intruders direction and movement. A yellow vector indicates when traffic meets intruding TA criteria (i.e., closing rate, distance, vertical separation). Absolute MOTION VECTOR TYPES White vector Depicts intruder ground track Calculations based on intruder direction and ground speed Endpoint depicts intruders position over the ground at the end of the selected duration Airborne and ground functionality Green vector Depicts intruder movement relative to the ownship Calculations based on track and ground speed of both intruder and ownship Relative Endpoint depicts intruders location relative to the ownship at the end of the selected duration Airborne functionality only Relative Motion - Unavailable annunciates during ground operations 5-24 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.10.3 Altitude Filtering Pilot selectable filters limit the display of traffic to a specific altitude range relative to the altitude of the ownship. Filter selections apply to both the Traffic page and the traffic overlay on the Map page. SELECTION Normal Above Below Unrestricted ALTITUDE RANGE
-2,700 ft to 2,700 ft
-2,700 ft to 9,900 ft
-9,900 ft to 2,700 ft
-9,900 ft to 9,900 ft 5.11 Status Annunciations ANNUNCIATION Absolute Motion - XX SEC/MIN Failed No Data DESCRIPTION Active motion vector type is absolute. ADS data failure. Unit is not receiving valid traffic data. No GPS Position ADS-B LRU detects that GPS is initializing. Relative Motion - XX SEC/MIN Relative Motion -
UNAVAILABLE Unavailable Active motion vector type is relative. Aircraft is not airborne and the active motion vector type is relative. Necessary traffic data not available. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-25 Hazard Awareness 5.12 Traffic Alerting FEATURE LIMITATIONS Aural traffic alerts available on GNX 375 only Traffic alerts occur anytime there is an increase in the number of traffic advisories. They remain active until the area is clear of all TAs. Traffic alerts appear as textual annunciations on the the Traffic page, and as a pop-up window when another page is active. Traffic Pop-up Traffic Alert Annunciation ANNUNCIATION ALERT TYPE | POP-UP | CONDITION |
VOICE MESSAGE TRAFFIC Alert Type: Caution Pop-up Alert: Yes Condition:
Traffic reports a traffic advisory Voice Message:
Message content depends on current traffic system configuration ALERTING PARAMETERS ALERTING PARAMETER CONSIDERATIONS Altitude separation and trend Angle Speed Closure rate of each aircraft
(ownship and target) Traffic alerting parameters consider several factors in order to allow you enough time to acquire the target and maneuver the aircraft away from conflicting traffic. To minimize nuisance alerts, traffic alerting sensitivity is adaptive, based on altitude above ground level. In fixed winged aircraft, no aural alerts are given below 500 ft. 5-26 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness Terrain Awareness WARNING DO NOT USE TERRAIN AND OBSTACLE DATA TO NAVIGATE OR MANEUVER AROUND TERRAIN. THEY ARE AN AID TO SITUATIONAL AWARENESS ONLY. Terrain controls are accessible from the Terrain menu. Map overlay keys are accessible from the associated map menu. 5.13 Terrain Configurations AVAILABLE TERRAIN CONFIGURATIONS Terrain Proximity Terrain Alerting Alerting functions are dependent upon the configured terrain alerting options. 5.13.1 GPS Altitude for Terrain FUNCTIONAL REQUIREMENTS GPS altitude is derived from satellite measurements. To acquire an accurate 3-D fix
(latitude, longitude, altitude), a minimum of four operating satellites must be in view of the GPS receiver antenna. The terrain system uses GPS altitude and position data to:
Create a 2-D image of surrounding terrain and obstacles relative to the aircrafts position and altitude Calculate the aircrafts flight path in relation to surrounding terrain and obstacles Predict hazardous terrain conditions and issue alerts 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-27 Hazard Awareness GSL ALTITUDE & INDICATED ALTITUDE The unit converts GPS altitude data to GSL altitude (i.e., the geometric altitude relative to MSL) for use in terrain functions. All Terrain page depictions and elevation indications are in GSL. Variations between GSL altitude and the aircrafts corrected barometric altitude (or indicated altitude) are common. As a result, Terrain page altitude data may differ from current altimeter readings. Both GSL altitude and indicated altitude represent height above MSL, but differ in accuracy and reliability. GSL ALTITUDE Highly accurate and reliable geometric altitude source INDICATED ALTITUDE Barometric altitude source corrected for pressure variations Does not require local altimeter Requires frequent altimeter settings to determine height above MSL Not subject to pressure and temperature variations Affected primarily by satellite geometry setting adjustment to determine height above MSL Subject to local atmospheric conditions Affected by variations in pressure, temperature, and lapse rate 5-28 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.14 Database Limitations NOTE Garmin cross-validates terrain and obstacle data in accordance with TSO-C151c. However, the information should never be considered all-inclusive. Database inaccuracies or omissions may exist. Terrain and obstacle data are not available when the aircraft is operating outside of the installed database coverage area. Garmin obtains terrain and obstacle data from government sources and cannot independently verify the accuracy and completeness of the information. Pilots must familiarize themselves with the appropriate charts and other data for safe flight. DATABASE Terrain Obstacle LIMITATIONS Not available north of 89 N latitude and south of 89 S latitude Coverage areas vary according to database type Power line indications for the contiguous United States and small parts of Canada and Mexico Regional definitions may change without notice May not contain uncharted obstacles May include power lines or only HOT lines depending on database type [1]
[1]
HOT lines are power lines that share location with other obstacles identified by the FAA. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-29 Hazard Awareness 5.15 Terrain Display Terrain, obstacle, and wire data display as overlays on the Terrain and Map pages. FEATURE REQUIREMENTS All terrain functions require the following components to operate properly. Valid 3-D GPS position for terrain and obstacle data display Valid terrain/obstacle database 2 1 3 4 5 6 1 2 3 4 5 6 Terrain Page Ownship Icon Depicts current aircraft position. GSL Altitude Displays current GPS height above mean sea level. North Indicator Indicates True north. Page Orientation Label Orientations:
Heading Up (HDG UP) during normal operation Changes to Track Up (TRK UP) in the event of a heading failure Legend Shows color designations for terrain and obstacle relative altitude ranges. Terrain Overlay Icon Indicates power line or obstacle presence at the current zoom scale. 5-30 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 AUTOMATIC ZOOM Hazard Awareness In the event an alert occurs, the page automatically zooms to provide the best depiction of that alerted terrain, obstacle, or power line. AUTOMATIC DATA REMOVAL Automatic removal of obstacle and power line data occurs at range scales greater than 10 nm. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-31 Hazard Awareness 5.16 Terrain Setup Tap Menu to access to pilot selectable settings as well as self-test and alert inhibit functions. SELECTION Terrain Inhibit FUNCTION Inhibits visual alerts for terrain, obstacles, and power lines 360 changes view format to a 360 ring encircling the View aircraft (default view) Flight Plan Legend Arc changes view format to a forward-looking 120 arc Toggles the active flight plan overlay on or off
(Terrain page only) Toggles the Terrain and Obstacle/Wire legend on or off 5-32 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.17 Terrain Proximity FEATURE LIMITATIONS Terrain and obstacle depictions are relative to aircraft altitude. Obstacle depictions are dependent upon database Setup does not provide visual or aural alerts TERRAIN PROXIMITY FEATURES Non-TSO C151c certified terrain display system 2-D graphical representation of surrounding terrain, obstacles, and power lines relative to aircraft position and altitude Declutter automatically removes obstacle and power line data at large ranges Continuous monitoring of database validity, GPS and hardware status Displays when higher level terrain functions are active 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-33 Hazard Awareness 5.17.1 Terrain Elevation Depictions Color shading depicts terrain elevations relative to the aircrafts position and altitude. Colors automatically adjust as the aircrafts altitude changes. 2 1 3 Terrain Shading 1 Red 2 Yellow 3 Black 5-34 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.17.2 Obstacle Elevation Depictions FEATURE LIMITATIONS Obstacles more than 2,000 ft below current altitude do not display Hazard Awareness TOWER OBSTACLES UNLIGHTED OBSTACLE LIGHTED OBSTACLE
<1000 AGL
>1000 AGL
<1000 AGL
>1000 AGL WIND TURBINE OBSTACLES OBSTACLE LOCATION Red obstacle is above or within 100 ft below current altitude. Yellow obstacle is between 100 ft and 1000 ft below current altitude. White obstacle is between 1,000 ft and 2,000 ft below current altitude. UNLIGHTED WIND TURBINE OBSTACLE LIGHTED WIND TURBINE OBSTACLE OBSTACLE LOCATION Red obstacle is above or within 100 ft below current altitude. Yellow obstacle is between 100 ft and 1,000 ft below current altitude. White obstacle is more than 1,000 ft below current altitude. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-35 Hazard Awareness POWER LINE OBSTACLES OBSTACLE POWER LINE OBSTACLE LOCATION Red power line is above or within 100 ft below current altitude. Yellow power line is between 100 ft and 1,000 ft below current altitude. White power line is between 1,000 ft and 2,000 ft below current altitude. OBSTACLE GROUPS With the exception of power lines, obstacles within close proximity of each other may display as a group. Asterisk indicates that the obstacle belongs to a group Relative altitude of the highest obstacle determines color Depiction is of the most immediate threat 5-36 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 5.18 Terrain Alerting Terrain-FLTA provides visual alerts for potential flight path conflicts involving terrain, obstacles, or power lines. Alerting function behavior is determined at installation. Hazard Awareness TERRAIN-FLTA FEATURES Non-TSO C151c certified terrain alerting system FLTA functions: RTC, RLC, ROC, ITI, ILI, and IOI Terrain depictions and display overlays Cautions and warnings indicate alert severity and threat type Textual annunciations Pop-up alerts Threat location indication on map displays (Map page, Terrain page) Self-test and alert inhibit functionality Alert Types 5.18.1 Available alerting functions depend on the installed terrain system. ALERT TYPE Imminent Impact
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Reduced Clearance [1]
Premature Descent [2]
CONDITION Aircraft reaches the minimum clearance altitude of any obstacle (IOI), terrain (ITI), or power line (ILI) in the projected flight path. Aircrafts vertical flight path is projected to be within the minimum clearance altitude of an obstacle (ROC), terrain
(RTC), or power line (RLC). Aircraft is significantly below the normal approach path for the nearest runway. Altitude is <700 ft above terrain Distance from destination airport is 15 nm or less
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[2]
Alerting inhibited <200 ft AGL within 0.5 nm of approach runway or <125 ft AGL within 1.0 nm of runway threshold. Alerting inhibited within 0.5 nm of approach runway or <125 ft AGL within 1.0 nm of runway threshold. Alerting thresholds for final descent are based on current position, speed, and flight path data. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-37 Hazard Awareness 5.18.2 Alerting Thresholds FLIGHT PHASE MINIMUM CLEARANCE ALTITUDE LEVEL FLIGHT DESCENDING En Route Terminal Approach Departure 700 ft 350 ft 150 ft 100 ft 500 ft 300 ft 100 ft 100 ft PDA THRESHOLD
) t f
(
i n a r r e T e v o b A t h g e H i Runway Threshold Distance from Destination Airport (nm) Alerting Area 5-38 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Hazard Awareness 5.18.3 Inhibiting PDA & Terrain-FLTA Alerts NOTE Always use discretion when inhibiting PDA or Terrain-FLTA alerts. Re-activate the alert function when appropriate. The Terrain Inhibit control is accessible via the terrain pop-up alert or Terrain page menu. Installer configurable settings allow alert suppression for specific runway types. Inhibit Mode Annunciation INHIBITS INHIBIT AUTOMATIC INHIBIT FUNCTION Manually inhibits PDA or Terrain-FLTA visual alerts for low altitude approaches. Automatically inhibits Terrain-FLTA alerts when the aircraft meets the following approach criteria. Altitude <200 ft above runway elevation Position <0.5 nm of approach end or between each runway end Tapping Terrain Inhibit generates a pop-up. Confirm the request to inhibit terrain alerts. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-39 Hazard Awareness 5.18.4 PDA & Terrain-FLTA Alerts Terrain alerts appear as textual annunciations on the the Terrain page, and as a pop-up window when another page is active. Terrain Pop-up Terrain Alert Annunciation ANNUNCIATION ALERT TYPE | POP-UP | CONDITION TER FAIL Alert Type: Caution Pop-up Alert: N/A Condition:
Terrain reports a system failure The database is missing or corrupt Alert Type: Advisory TER INHB Pop-up Alert: N/A TER N/A TERRAIN Condition:
Terrain reports alert inhibit mode active Alert Type: Caution Pop-up Alert: N/A Condition:
No certified GPS position Degraded GPS signal Aircraft is outside of the terrain database regional coverage Alert Type: Caution Pop-up Alert: Yes Condition:
Reduced Required Terrain Clearance Premature Descent Imminent Terrain Impact 5-40 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 ANNUNCIATION ALERT TYPE | POP-UP | CONDITION Hazard Awareness TER TEST OBSTACLE PULL UP WIRE Alert Type: Advisory Pop-up Alert: N/A Condition:
Terrain system test is in progress Alert Type: Caution Pop-up Alert: Yes Condition:
Reduced Obstacle Clearance Alert Type: Warning Imminent Obstacle Impact Pop-up Alert: Yes Imminent Terrain Impact Condition:
Reduced Required Terrain Clearance Reduced Obstacle Clearance Reduced Line Clearance Alert Type: Caution Imminent Obstacle Impact Imminent Line Impact Pop-up Alert: Yes Condition:
Reduced Line Clearance Imminent Line Impact 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 5-41 INTENTIONALLY LEFT BLANK 5-42 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Messages 6 Messages ADVISORY MESSAGES 6.1 Message Key .........................................................................................6-2 6.2 Airspace Advisories................................................................................6-3 Database Advisories...............................................................................6-4 6.3 Flight Plan Advisories .............................................................................6-5 6.4 GPS/WAAS Advisories............................................................................6-6 6.5 6.6 Navigation Advisories.............................................................................6-8 System Hardware Advisories ..................................................................6-9 6.7 Terrain Advisories ................................................................................6-11 6.8 6.9 Traffic System Advisories......................................................................6-12 6.10 VCALC Advisories................................................................................6-13 6.11 Waypoint Advisories ............................................................................6-13 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-1 Messages Advisory Messages Advisories are system-related messages relative to the display. Most recent advisories appear at the top of list View-once advisories remain in queue until viewed by the pilot Persistent (or conditional) advisories remain active until the indicated condition is resolved All advisories are logged in the units internal storage. This log may be exported to an SD card. 6.1 Message Key This key displays at the left edge of the screen when an advisory condition is present. Tapping the key once displays an advisory list. Tapping it again acknowledges all active advisories and closes the list. Flashes when a new advisory is present Turns solid once all active advisories are acknowledged No longer displays after all active advisories are cleared 6-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 6.2 Airspace Advisories Alerted airspace types are based on pilot settings in the Airspace Alerts page. These advisories are informational only. No action is necessary. Messages ADVISORY CONDITION AIRSPACE ALERT - Inside airspace. AIRSPACE ALERT - Airspace within 4 nm and entry in less than 10 minutes Aircraft is inside the airspace. Airspace is within 4nm of the path and projected to enter in less than 10 minutes. AIRSPACE ALERT - Airspace entry in less than 10 minutes Aircraft is projected to enter the airspace in less than 10 minutes. AIRSPACE ALERT - Within 4 nm of airspace Airspace is less than 4 nm from the aircraft. May not be projected to enter the airspace. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-3 Messages 6.3 Database Advisories ADVISORY CONDITION
<Terrain/Obstacle>
database not available. Terrain display unavailable for current location. Verify user-modified procedures in stored flight plans are correct. Verify airways in stored flight plan are correct. A procedure has been modified in a cataloged flight plan. Aircraft in area with large mag var. Verify all course angles. The indicated database is unavailable or corrupt. Terrain database cannot provide elevation at the current GPS position. Aircraft is outside the database coverage area. Navigation database updates and the stored flight plan contains user-modified procedures. The stored flight plan contains an airway that is inconsistent with the current navigation database. Database update causes flight plan to exceed 100 waypoint limit. Procedure is removed or truncated as a result. Magnetic variation flagged as unreliable in the MagVar database. Typically occurs when operating at high latitudes that do not support a magnetic NAV angle. CORRECTIVE ACTION Re-download and install the indicated database. Contact a Garmin dealer for support. Load appropriate coverage area onto the external datacard. Verify the procedures are correct. Verify all airways are correct. If necessary, reload airways to the stored flight plan routes. Verify cataloged flight plan and procedures are correct. If necessary, reload procedures to the stored flight plan routes. Verify that the geographical region supports navigation based on magnetic variation. 6-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 6.4 Flight Plan Advisories ADVISORY CONDITION CORRECTIVE ACTION Messages Flight plan import failed. Flight plan import failed. Catalog is full.
<#> new imported flight plan(s) available for preview. Unit unable to decode flight plan contents. Wireless import of the requested flight plan not possible. The flight plan catalog is full. Wireless import of the requested flight plan not possible. Unit receives the specified number of flight plans via the import function. They are available for viewing on the Preview page. Stored flight plan waypoint is not in current navigation database. Current navigation database no longer contains a stored flight plan waypoint. Stored flight plan waypoint has changed location. Steep turn. Aircraft may overshoot course during turn. A waypoint in a stored flight plan moved by more than 0.33 arc minutes from its previous position. The flight plan contains an acute course change ahead. Following the guidance requires a bank in excess of normal. If coupled, the autopilot may not be able to execute the steep turn. Check for proper operation of all necessary components. If the problem persists, contact dealer for service. Delete any unnecessary flight plans from the catalog. No action necessary. Verify all stored cataloged flight plans and procedures. Modify stored flight plans as necessary to include waypoints that are in the current navigation database. Verify stored cataloged flight plans and procedures. Modify stored flight plans as necessary to include waypoints that are in the current navigation database. Slowing the aircraft may shallow the turn. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-5 Messages 6.5 GPS/WAAS Advisories ADVISORY
<GPS/GNX> GPS receiver has failed. Check GPS coax for electrical short. GPS loss of integrity
(LOI). Verify GPS position with other navigation equipment. GPS navigation lost due to insufficient satellites. Use other navigation source. GPS navigation lost and may have erroneous position. Use other navigation source. Abort Approach. GPS approach is no longer available. Approach not active. Approach guidance not available. GPS approach downgraded. Use LNAV minima. CONDITION Internal communication to the WAAS board is inoperative. GPS/WAAS board reports LOI. Antenna may be shaded from satellites. GPS position lost due to lack of satellites. GPS position lost due to erroneous position. GPS approach not available. GPS unable to provide approach level of service (i.e., LPV, LNAV, LNAV+V, or L/VNAV). GPS approach could not transition to active (e.g., the unit remains in TERM as it does not have the required HPL/VPL for LNAV). Approach downgraded from LPV or LNAV/VNAV to an LNAV approach. Vertical guidance no longer available. CORRECTIVE ACTION Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. Ensure the aircraft is clear of hangars, buildings, trees, etc. Use a different GPS receiver or a non-GPS based source of navigation. If the problem persists, contact dealer for service. Wait for GPS satellite geometry to improve. Ensure the aircraft has a clear view of the sky. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. Initiate a climb to the MSA or other published safe altitude, abort the approach, and execute a non-GPS based approach. Abort the approach and then execute a non-GPS based approach. Continue to fly the approach using published LNAV minimums. 6-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 ADVISORY CONDITION CORRECTIVE ACTION Messages GPS searching sky. Ensure GPS antenna has unobstructed view of the sky. Low internal GPS clock battery. WAAS board is acquiring position and may take longer than normal. Typically occurs when the unit is powered on after installation or being off for several weeks. WAAS board indicates that its clock battery is low. May experience delay when attempting to acquire GPS position. Almanac data may be lost. No action necessary. Contact dealer for service. GPS receiver needs service. WAAS board is reporting that it requires service. GPS module may continue to function. Use a different GPS receiver or a non-GPS based source of navigation. Contact dealer for service. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-7 Messages 6.6 Navigation Advisories ADVISORY CONDITION CORRECTIVE ACTION Set Course on CDI/HSI to <current DTK>. Holding EFC time has expired. True north approach. Verify NAV angles are referenced to True north (T). Magnetic north approach. Verify NAV angles are referenced to Magnetic north. NAV angles are referenced to True north (T). NAV angles are referenced to a user set value (U) The selected course on the CDI/HSI does not match the current desired track. It is past the specified EFC time for the user-defined hold. The loaded procedure references true north and the active leg has a published true north reference. The loaded approach is magnetic, but the NAV angle reference is not. Set the CDI/HSI selected course to the current desired track. No action necessary. Verify the NAV angle is set to True north. Change NAV angle setting to Magnetic. NAV angle is set to True. No action necessary. NAV angle is set to User. No action necessary. 6-8 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 6.7 System Hardware Advisories Messages ADVISORY CONDITION
<GPS/GNX>
knob-push stuck. Dual concentric inner knob is stuck.
<GPS/GNX> cooling fan failed.
<GPS/GNX> over temp. Reducing backlight brightness.
<GPS/GNX> under temp. Pilot stored data was lost. Recheck settings. Unit detects a cooling fan fault. Coloration may be incorrect. Backlight may dim to reduce power and heat. Unit temperature exceeds the over temperature threshold. Backlight dims to reduce power and heat. Unit temperature is below the normal operating temperature threshold. An error occurred in the pilot stored data. The following user settings may be lost. Map menu settings User waypoints Catalog flight plans User field settings Unit convention selection CORRECTIVE ACTION Push the inner knob again. If it remains stuck, use the corresponding touchscreen controls. Contact dealer for service. Extended operation at high temperatures is not recommended as damage to the unit may occur. Contact dealer for service. Decrease cabin temperature and increase cabin airflow near the unit. If the problem persists, contact dealer for service. If the problem persists, contact dealer for service. Recheck settings. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-9 Messages ADVISORY CONDITION CORRECTIVE ACTION Loss of calibration data. GPS175 cannot communicate with its configuration module or other hardware. GNX 375 experiences a fault related to one of the following. ADS-B/Nav communication Altitude encoder calibration Audio ROM Configuration module Non-volatile memory Suppression bus The SD card is unreadable or corrupt
(i.e., data is unavailable). User ejects Flight Stream 510 wireless datacard. Network connection lost. Export failure. May occur for WAAS or traffic logs. Export to SD card successful. May occur for WAAS or traffic logs.
<GPS/GNX> is not receiving heading information from any source. Heading up map orientation not available.
<GPS/GNX> needs service.
<GPS/GNX> SD card is invalid or failed.
<Name> log encountered an error when exporting.
<Name> log has exported successfully. Heading source inoperative or connection lost. Contact dealer for service. Reformat the SD card using an external computer. Re-insert the SD card in the slot. If the problem persists, contact dealer for service. Restart unit to reconnect. Reformat the SD card using an external computer. Re-insert the SD card in the slot. If the problem persists, contact dealer for service. No action necessary. Contact dealer for service. 6-10 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 ADVISORY Pressure altitude source inoperative or connection lost. Press "Enable APR Output" before selecting APR on autopilot. ADS-B Out fault. Pressure altitude source inoperative or connection lost. Transponder has failed. Transponder is operating in ground test mode.
<GPS/GNX> demo mode. CONDITION
<GPS/GNX> is not receiving pressure altitude data from any source. Approach guidance is available from the connected KAP 140/KFC 225 autopilot. Transponder loses communication with the pressure altitude source. Transponder detects an internal failure. Functionality may be unavailable. Possible causes:
1090ES ADS-B Out failure Transponder failure Communication with the transponder is lost Transponder is being forced airborne for ground test. GNX 375 only. The unit is in demo mode. Do not use for navigation. 6.8 Terrain Advisories Messages CORRECTIVE ACTION Contact dealer for service. Before engaging approach mode on the autopilot, tap the Enable APR Output key. Contact dealer for service. Contact dealer for service. Cycle power to the GNX 375 once ground test completes. Power cycle the unit to exit demo mode. ADVISORY Terrain alerts are inhibited. Re-enable alerts in the Terrain menu. CONDITION CORRECTIVE ACTION Pilot enables terrain alert inhibit function. Open Terrain menu and deselect Terain Inhibit. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-11 Messages 6.9 Traffic System Advisories ADVISORY CONDITION CORRECTIVE ACTION 1090ES traffic receiver fault. ADS-B traffic alerting function inoperative. ADS-B traffic function inoperative. Traffic/FIS-B functions inoperative. UAT fault. UAT traffic/data receiver fault. ADS-B LRU unable to receive 1090 Extended Squitter traffic. ADS-B LRU reports a traffic alerting failure. ADS-B LRU reports a failure with the ADS-B Traffic input. ADS-B LRU reports a critical fault and is inoperative. Communication with the ADS-B LRU is lost. UAT LRU reports a low battery or fan fault. ADS-B LRU unable to receive UAT traffic and FIS-B data. Service required. Contact dealer for support. 6-12 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 6.10 VCALC Advisories ADVISORY Approaching top of descent. Arriving at VCALC target altitude. CONDITION User configured a vertical descent calculation, and the aircraft is within 60 seconds of the calculated top of descent. User configured a vertical descent calculation, and the aircraft is approaching target altitude. Messages CORRECTIVE ACTION No action necessary. No action necessary. 6.11 Waypoint Advisories ADVISORY CONDITION CORRECTIVE ACTION User waypoint import failed. User waypoint import failed. User waypoint database is full. User waypoints were imported successfully. User waypoints imported successfully -
existing waypoints reused. User waypoint import failed due to improper file format. User waypoint catalog is full. Import of the requested user waypoints could not complete. User waypoint import successful. User waypoint import successful. Import function reuses existing user waypoints instead of creating duplicates. Ensure media has the correct file format. If the problem persists, contact dealer for service. Delete any unnecessary user waypoints from the catalog and try again. No action necessary. No action necessary. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 6-13 INTENTIONALLY LEFT BLANK 6-14 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 7 Qualification Qualification NOTE The procedures described in this section are not authorized for completion during flight. All tasks must be performed while the aircraft is on the ground. 7.1 Glove Qualification The touchscreen uses capacitive touch technology to sense the proximity of skin to the display. A glove creates a barrier between the skin and the display glass, potentially reducing the ability of the display to detect touches. This procedure qualifies a specific glove for use with the touchscreen. Due to differences in finger size and glove size, the qualification procedure is specific to the pilot/glove combination. Multiple units must be evaluated individually. GLOVE SELECTION CONSIDERATIONS Thinner gloves perform better than thicker gloves. Leather gloves, and gloves designed specifically for use with capacitive touchscreen devices, are often found to be acceptable. To improve touchscreen sensitivity while wearing gloves, use the pad of your finger instead of the tip during touch interactions. GLOVE QUALIFICATION GUIDANCE Table 1 contains the tasks required to qualify a glove. Table 2 contains tasks that are not required to qualify a glove, but may limit how some functions are accessed while wearing a glove. 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 7-1 Qualification GLOVE QUALIFICATION STEPS Complete only the tasks for the capabilities relevant to the installed navigator. 1. 2. 3. 4. 5. 6. 7. Sit in the pilots seat. Start the unit in normal mode. Perform the tasks listed in table 1 and table 2, tapping each key with a non-gloved finger. It is not necessary to record any results for this step. Repeat step 3 using a gloved hand. For each task, determine whether the touchscreen response is the same or worse than without the glove. Record the results in the applicable table. Items that may cause the operation to be worse include, but are not limited to:
Multiple attempts to select a key Unintentional selection of adjacent key(s) Excessive force on the touchscreen to select a key If all applicable tasks produce the same response with and without a glove, the pilot may use the glove in flight. GLOVE QUALIFICATION PROCEDURE Pilot:
Glove Description:
Circle the applicable navigator. GPS 175 GNX 375 7-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Qualification TABLE 1: TASKS REQUIRED FOR GLOVE QUALIFICATION OPERATION WITH GLOVE
(CIRCLE ONE) TASK Starting from the Home page:
GPS Waypoint Type the airport identifier KSLE. Enter Return to the Home page. Flight Plan Add Waypoint Type the airport identifier KSLE. Enter Same Same Same Same Same Same Same Same Add each of the following waypoints in the same manner. KMMV KONP BTG Select BTG. Load Airway V23 ALFOR Load Scroll the list of flight plan waypoints up and down. Back Same Same Same Same Same Same Same Same Same Same Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse Worse 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 7-3 Qualification TABLE 2: TASKS NOT REQUIRED FOR GLOVE QUALIFICATION TASK OPERATION WITH GLOVE
(CIRCLE ONE) Open the Active Flight Plan page. With one finger on the page, drag the waypoint list up and down. With one finger, swipe the list up and down. Back Open the Map page. Graphically Edit FPL Drag KONP to an empty area of the map, panning and zooming as necessary. Observe that KONP is removed from the flight plan. Drag the leg between KMMV and BTG to KSPB. Observe that KSPB is added to the flight plan. Same Same Same Same Same Same Worse Worse Worse Worse Worse Worse Same Worse 7-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Glossary 8 Glossary A ACT Altitude Compensated Tilt ADAHRS Air Data/Attitude & Heading Reference System ADC ADIZ Air Data Computer Air Defense Identification Zone ADS-B Automatic Dependent Surveillance Broadcast AFM AFMS AGL AHRS AIM AIRB ALT AP Aircraft Flight Manual Aircraft Flight Manual Supplement Above Ground Level Attitude Heading Reference System Airmans Information Manual Basic Airborne Application Altitude Hold Autopilot ARTCC Air Route Traffic Control Center ASOS Automated Service Observing System ATC ATIS ATK AWOS C CDI CDU CRS CTAF Air Traffic Control Automatic Terminal Information Service Along Track Automated Weather Observing Station Course Deviation Indicator Control and Display Unit Course Common Traffic Advisory Frequency 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 8-1 Glossary D DG DME E EDR EFC ENR ESP F FAF FDC FIS-B FLTA FMS FPM FSS G GCS GDC GDL GDU GFC GP GPS Directional Gyro Distance Measuring Equipment Excessive Descent Rate Expected Further Clearance En Route Electronic Stability and Protection Final Approach Fix Flight Data Center Flight Information Services Broadcast Forward Looking Terrain Avoidance Flight Management System Feet Per Minute Flight Service Station Ground Clutter Suppression Garmin Air Data Computer Garmin Data Link Garmin Display Unit Garmin Flight Controller Glidepath Global Positioning System GPSS Global Positioning System Steering 8-2 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Glossary GRS GS GSL GSU GTP H HDG HOT HPL HSDB I IAF IAS IAT IFR Garmin Reference System Glideslope Geometric Sea Level Garmin Sensing Unit Garmin Temperature Probe Heading Hazardous Obstacle Transmission Horizontal Protection Level High Speed Data Bus Initial Approach Fix Indicated Airspeed Induction Air Temperature Instrument Flight Rules IGRF International Geomagnetic Reference Field ILI ILS INT IOI ISA ITI K KIAS L LDI LOA LOC LRU Imminent Line Impact Instrument Landing System Intersection Imminent Obstacle Impact International Standard Atmosphere Imminent Terrain Impact Knots Indicated Airspeed Lateral Deviation Indicator Letter of Authorization Localizer Line Replaceable Unit 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 8-3 Glossary M MAP MAHP MDA Missed Approach Point Missed Approach Holding Point Minimum Descent Altitude METAR Meteorological Terminal Aviation Routine Weather Report Military Operations Area Mean Sea Level MOA MSL N NAVAID Navigation Aid NCR NDB NEXRAD O OAT OBS OCN P PCL PDA PRF PVT R RAIM RLC ROC RTC Negative Climb Rate Non-Directional Beacon Next-Generation Radar Outside Air Temperature Omni Bearing Selector Oceanic Pilot Controlled Lighting Premature Descent Alert Pulse Repetition Frequency Position, Velocity, and Time Receiver Autonomous Integrity Monitoring Reduced Line Clearance Reduced Required Obstacle Clearance Reduced Required Terrain Clearance 8-4 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 Glossary S SAT SBAS SD SSID SURF SVID T TA TAF TAS TAT TCAD TCAS TERM TFR TIS Static Air Temperature Satellite-Based Augmentation System Secure Datacard Service Set Identifier Surface Situation Awareness Satellite-Vehicle Identification Traffic Advisory Terminal Aerodrome Forecast Traffic Advisory System Total Air Temperature Traffic Alert and Collision Avoidance Devices Traffic Alert and Collision Avoidance System Terminal Temporary Flight Restriction Traffic Information Service TSAA Traffic Situational Awareness with Alerting TSO U UTC Technical Standard Order Universal Time Coordinated 190-02207-02 Rev. 1 GPS 175/GNX 375 Pilots Guide 8-5 Glossary V VCALC Vertical Calculator Vertical Deviation Indicator Visual Flight Rules VOR/Localizer Vertical Navigation Very High Frequency Omni-directional Range Vertical Protection Level Visual Reporting Point Vertical Speed VDI VFR VLOC VNAV VOR VPL VRP VS W WAAS Wide Area Augmentation System Waypoint WP X XPDR Transponder 8-6 GPS 175/GNX 375 Pilots Guide 190-02207-02 Rev. 1 190-02207-02 Rev. 1 190-02207-02 Rev. 1
| 1 2 | User Manual 1 | Users Manual | 153.40 KiB | March 25 2019 |
Important Safety and Product Information, GPS 175/GNX 375 NOTE: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This notice is being provided in accordance with Californias Proposition 65. If you have any questions or would like additional information, please refer to our website at www.garmin.com/prop65. iPad, iPhone, iPod, and iPod touch are trademarks of Apple Inc., registered in the USA and other countries. AndroidTM is a trademark of Google Inc. The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Garmin is under license. 2 FCC Compliance This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. This product does not contain any user-serviceable parts. Repairs should only be made by an authorized Garmin service center. Unauthorized repairs or modifications could result in permanent damage to the equipment, and void your warranty and your authority to operate this device under FCC Part 15 and FAA regulations. Innovation, Science, and Economic Development Compliance This device complies with Innovation, Science and Economic Development Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme aux normes RSS sans licence du ministre Innovation, Sciences et Dveloppement conomique Canada. Son fonctionnement est soumis aux deux conditions suivantes : (1) ce priphrique ne doit pas causer dinterfrences et (2) doit accepter toute interfrence, y compris les interfrences pouvant entraner un fonctionnement indsirable de lappareil. Anatel Warning Este equipamento no tem direito proteo contra interferncia prejudicial e no pode causar interferncia em sistemas devidamente autorizados. 3 Compatibility Compatible units may be added and there are limitations with some older units, so contact your authorized Garmin dealer or visit www.garmin.com for the most current information. Use of the Made for Apple badge means that an accessory has been designed to connect specifically to the Apple product(s) identified in the badge, and has been certified by the developer to meet Apple performance standards. Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards. Software License Agreement BY USING THE GPS 175/GNX 375 PRODUCT, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin grants you a limited license to use the software embedded in this device (the Software) in binary executable form in the normal operation of the product. Title, ownership rights, and intellectual property rights in and to the Software remain with Garmin. You acknowledge that the Software is the property of Garmin and is protected under the United States of America copyright laws and international copyright treaties. You further acknowledge that the structure, organization, and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin. You agree not to decompile, disassemble, modify, reverse assemble, reverse engineer, or reduce to human readable form the Software or any part thereof or create any derivative works based on the Software. You agree not to export or re-export the Software to any country in violation of the export control laws of the United States of America. Limited Warranty Visit https://www.garmin.com/en-US/legal/aviation-limited-
warranty for warranty information. 4 2019 Garmin Ltd. or its subsidiaries Visit flyGarmin.com for aviation product support. www.garmin.com February 2019 190-01795-04_0A Printed in the United States or Taiwan
| frequency | equipment class | purpose | ||
|---|---|---|---|---|
| 1 | 2019-03-25 | 2402 ~ 2480 | DXX - Part 15 Low Power Communication Device Transmitter | Original Equipment |
| 2 | 1090 ~ 1090 | TNB - Licensed Non-Broadcast Station Transmitter |
| app s | Applicant Information | |||||
|---|---|---|---|---|---|---|
| 1 2 | Effective |
2019-03-25
|
||||
| 1 2 | Applicant's complete, legal business name |
Garmin International Inc
|
||||
| 1 2 | FCC Registration Number (FRN) |
0005088588
|
||||
| 1 2 | Physical Address |
1200 E. 151st. Street
|
||||
| 1 2 |
Olathe, Kansas 66062
|
|||||
| 1 2 |
United States
|
|||||
| app s | TCB Information | |||||
| 1 2 | TCB Application Email Address |
t******@timcoengr.com
|
||||
| 1 2 | TCB Scope |
A2: Low Power Transmitters (except Spread Spectrum) and radar detectors operating above 1 GHz
|
||||
| 1 2 |
B3: Maritime & Aviation Radio Services equipment in 47 CFR parts 80 & 87
|
|||||
| app s | FCC ID | |||||
| 1 2 | Grantee Code |
IPH
|
||||
| 1 2 | Equipment Product Code |
0328533
|
||||
| app s | Person at the applicant's address to receive grant or for contact | |||||
| 1 2 | Name |
D****** K****
|
||||
| 1 2 | Title |
Manager Environmental and Regulatory Affairs
|
||||
| 1 2 | Telephone Number |
91344********
|
||||
| 1 2 | Fax Number |
913 3********
|
||||
| 1 2 |
d******@garmin.com
|
|||||
| app s | Technical Contact | |||||
| n/a | ||||||
| app s | Non Technical Contact | |||||
| n/a | ||||||
| app s | Confidentiality (long or short term) | |||||
| 1 2 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
| 1 2 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
| if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
| app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
| 1 2 | Is this application for software defined/cognitive radio authorization? | No | ||||
| 1 2 | Equipment Class | DXX - Part 15 Low Power Communication Device Transmitter | ||||
| 1 2 | TNB - Licensed Non-Broadcast Station Transmitter | |||||
| 1 2 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | Licensed Non-Broadcast Station Transmitter and low power Transmitter | ||||
| 1 2 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
| 1 2 | Modular Equipment Type | Does not apply | ||||
| 1 2 | Purpose / Application is for | Original Equipment | ||||
| 1 2 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | Yes | ||||
| 1 2 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
| 1 2 | Grant Comments | Power listed is conducted at the antenna connector. Average conducted power is 4.31 Watts. The antenna(s) of this Transponder equipment are mounted along the fuselage of air transport aircraft. These locations are accessible to airport maintenance personnel only and are in general not accessible to the general population. Users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. | ||||
| 1 2 | Is there an equipment authorization waiver associated with this application? | No | ||||
| 1 2 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
| app s | Test Firm Name and Contact Information | |||||
| 1 2 | Firm Name |
Rogers Labs, Inc.
|
||||
| 1 2 | Name |
S******** R****
|
||||
| 1 2 | Telephone Number |
913-8********
|
||||
| 1 2 | Fax Number |
913-8********
|
||||
| 1 2 |
r******@pixius.net
|
|||||
| Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
| 1 | 1 | 15C | 2402.00000000 | 2480.00000000 | |||||||||||||||||||||||||||||||||||||
| Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
| 2 | 1 | 87 | 1090.00000000 | 1090.00000000 | 392.0000000 | 4.0000000000 ppm | 7M98M1D | ||||||||||||||||||||||||||||||||||
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC