Garmin G3X Touch Manual

G3X Pilot’s Guide
™

SYSTEM OVERVIEW
FLIGHT INSTRUMENTS
EIS
CNS INTERFACE
GPS NAVIGATION
FLIGHT PLANNING
HAZARD AVOIDANCE
ADDITIONAL FEATURES
INTEGRATED AUTOPILOT
ANNUNCIATIONS & ALERTS
APPENDIX
INDEX

Copyright © 2009 - 2012 Garmin Ltd. or its subsidiaries. All rights reserved.
This manual reflects the operation of System Software version 006.40 or later. Some differences
in operation may be observed when comparing the information in this manual to earlier or later
software versions.
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Toll free: 800/800.1020 or 866/739.5687 Tel: [phone] Fax: [phone]
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Tel: [phone] Fax: [phone]
Web Site Address: www.garmin.com
Except as expressly provided herein, no part of this manual may be reproduced, copied,
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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
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Garmin
®
, FliteCharts
®
, SafeTaxi
®
, and MapSource
®
are registered trademarks of Garmin Ltd. or its
subsidiaries. G3X
™
is a trademark of Garmin Ltd. or its subsidiaries. These trademarks may not be
used without the express permission of Garmin.
Jeppesen
®
is a registered trademark of Jeppesen, Inc.
NavData
™
is a trademark of Jeppesen, Inc.
SiriusXM Weather is provided by SiriusXM Satellite Radio, Inc.
SiriusXM Radio is provided by SiriusXM Satellite Radio, Inc.
May, 2012 190-01115-00 Rev. G Printed in the U.S.A.

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G
Warnings, Cautions & Notes
WARNING: Navigation and terrain separation must NOT be predicated upon the
use of the terrain function. The G3X Terrain Proximity feature is NOT intended to
be used as a primary reference for terrain avoidance and does not relieve the pilot
from the responsibility of being aware of surroundings during flight. The Terrain
Proximity feature is only to be used as an aid for terrain avoidance and is not certified
for use in applications requiring a certified terrain awareness system. Terrain data
is obtained from third party sources. Garmin is not able to independently verify
the accuracy of the terrain data.
WARNING: To reduce the risk of unsafe operation, carefully review and understand
all aspects of the G3X Pilot’s Guide documentation and the Pilot’s Operating
Handbook of the aircraft. Thoroughly practice basic operation prior to actual use.
During flight operations, carefully compare indications from the G3X to all available
navigation sources, including the information from other NAVAIDs, visual sightings,
charts, etc. For safety purposes, always resolve any discrepancies before continuing
navigation.
WARNING: The displayed minimum safe altitudes (MSAs) are only advisory in
nature and should not be relied upon as the sole source of obstacle and terrain
avoidance information. Always refer to current aeronautical charts for appropriate
minimum clearance altitudes.
WARNING: The altitude calculated by G3X internal GPS receivers is geometric height
above Mean Sea Level and could vary significantly from the altitude displayed by
pressure altimeters. Always use pressure altitude displayed by the G3X PFD when
determining or selecting aircraft altitude.
WARNING: Do not use outdated database information. Databases used in the G3X
system must be updated regularly in order to ensure that the information remains
current. Pilots using any outdated database do so entirely at their own risk.
WARNING: SiriusXMWeather should not be used for hazardous weather penetration.
Weather information is approved only for weather avoidance, not penetration.
WARNING: NEXRAD weather data is to be used for long-range planning purposes
only. Due to inherent delays in data transmission and the relative age of the data,
NEXRAD weather data should not be used for short-range weather avoidance.
WARNING: The data contained in the terrain and obstacle databases comes from
government agencies. Garmin accurately processes and cross-validates the data,
but cannot guarantee the accuracy and completeness of the data.

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G
Warnings, Cautions & Notes
WARNING: The illustrations in this guide are only examples. Never use the G3X
to attempt to penetrate a thunderstorm. Both the FAA Advisory Circular, Subject:
Thunderstorms, and the Aeronautical Information Manual (AIM) recommend
avoiding “by at least 20 miles any thunderstorm identified as severe or giving an
intense radar echo.”
WARNING: For safety reasons, G3X operational procedures must be learned on
the ground.
WARNING: Because of variation in the earth’s magnetic field, operating the G3X within
the following areas could result in loss of reliable attitude and heading indications. 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)
WARNING: The Garmin G3X has a very high degree of functional integrity. However,
the pilot must recognize that providing monitoring and/or self-test capability for all
conceivable system failures is not practical. Although unlikely, it may be possible
for erroneous operation to occur without a fault indication shown by the G3X. It is
thus the responsibility of the pilot to detect such an occurrence by means of cross-
checking with all redundant or correlated information available in the cockpit.
WARNING: 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 Garmin G3X utilize GPS as a precision electronic NAVigation AID
(NAVAID). Therefore, as with all NAVAIDs, information presented by the G3X can
be misused or misinterpreted and, therefore, become unsafe.
WARNING: Do not use basemap (land and water data) information for primary
navigation. Basemap data is intended only to supplement other approved
navigation data sources and should be considered as an aid to enhance situational
awareness.
WARNING: Do not use the approach information provided by the VFR navigation
database residing within the G3X as a means of navigating any instrument
approach. The G3XVFR navigation database is limited to present only the waypoints
for the final approach leg of a published procedure. These waypoints and associated
course line are made available for monitoring purposes only.

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G
Warnings, Cautions & Notes
CAUTION: The display uses a lens coated with a special anti-reflective coating that
is very sensitive to skin oils, waxes, and abrasive cleaners. CLEANERS CONTAINING
AMMONIA WILL HARM THE ANTI-REFLECTIVE COATING. It is very important to
clean the lens using a clean, lint-free cloth and an eyeglass lens cleaner that is
specified as safe for anti-reflective coatings.
CAUTION: The Garmin G3X does not contain any user-serviceable parts. Repairs
should only be made by an authorized Garmin service center. Unauthorized repairs
or modifications could void both the warranty and the pilot’s authority to operate
this device under FAA/FCC regulations.
NOTE: All visual depictions contained within this document, including screen images
of the G3X panel and displays, are subject to change and may not reflect the most
current G3X system and aviation databases. Depictions of equipment may differ
slightly from the actual equipment.
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 California’s Proposition 65. If you have
any questions or would like additional information, please refer to our web site at
www.garmin.com/prop65.
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 eyewear may cause the flight displays to appear dim or
blank.
NOTE: Temporary Flight Restriction (TFR) data is provided by the FAA and may
not be updated outside of normal business hours. Confirm data currency through
alternate sources and contact your local FSS for interpretation of TFR data.
NOTE: The Garmin G3X system includes products like the GDU 37X and the GSU
73 that are not TSO-certified products and have not received FAA approval or
endorsement. Consequently the G3X system is not suitable for installation in
type-certificated aircraft.

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G RR-1
Part Number Change Summary
190-01115-00 Initial release
Rev Date Description
A August,
2009
Production Release
B January,
2010
Added System Software Version 2.50 parameters
C March,
2010
System Software Version 2.50-2.60 changes:
• Added message to indicate if config module is missing
• Added warning text to Weight & Balance Page
D June, 2010 System Software Version 2.60-2.70:
• Added support for Integrated Autopilot control and display via the PFD
Page
• Added PFD Setup Menu
• Added second Bearing Pointer to PFD HSI
• Added fuel range ring to map
• Added menu option to XM Page to allow selection of a specific chan-
nel number
System Software Version 2.70-3.00:
• Added Synthetic Vision
• Added mach number to configurable Data Fields
E April,
2011
System Software Version 3.00-3.10:
• Added ability to import/export flight plans using the SD card
• Added Softkeys to Nearest Airports Page to quickly show/hide private
airports and heliports
• Removed ability to adjust Roll Mode reference using the FMS Joystick
System Software Version 3.10-3.20:
• Added ability to display checklist files from SD Card
• Added ability to log data to SD Card
• Added ability to export Track Log and User Waypoints to SD Card
• Added ability to display fuel calculator values in data bar
System Software Version 3.20-4.00:
• Added support for Jeppesen ChartView and geo-referenced FliteCharts
• Added ability to use VNAV when using an external GPS navigation
Source
• Added Softkey to Terrain Page to quickly enabled/disable terrain alerts
• Added display of Navaid frequency to PFD bearing pointer data fields

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G
RR-2
Rev Date Description
E April,
2011
System Software Version 4.00-4.10:
• Added support for displaying flight time in databar
System Software Version 4.10 - 5.00 :
• Added support for VOR, localizer, and glideslope modes for integrated
autopilot
• Added option to display trim and flap position on PFD
• Added persistent sky/ground display to PFD
• Added ability to configure and display Vse (blue line) and Vmc (red
line) on PFD airspeed tape for multiengine aircraft
• Added ‘User Selected’ configuration option to allow the position of the
EIS strip to be changed via the Display Setup Page
• Added ability to view EGT/CHT cylinder temperature bar graph on a
single-display system
• Added automatic sync of altimeter setting to local terrain elevation
when FMS Joystick is pressed and held while BARO Softkey is selected
and aircraft is stationary on the ground
• Added display of displaced runway threshold distance to Airport
Review Page
• Added menu options to the Waypoint Page to quickly view the depar-
ture and destination airports
• Added menu option and softkey to the FPL VNAV Page to force a
capture of a VNAV profile
• Added Sirius/XM warning text
• Improved HSI localizer course auto-slew and localizer backcourse
presentation
System Software Version 5.0 - 5.10 :
• Added Fuel Flow to list of configurable data fields
System Software Version 5.10 - 6.00 :
• Added pathways
• Note about VPX Page
F October,
2011
System Software Version 6.00 - 6.10 :
• Added baro minimums altitude reference bug and audio alert to PFD
• Changed CRS Softkey on PFD Page to indicate which course it controls
(LOC, VOR, or OBS).

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G RR-3
Rev Date Description
F October,
2011
System Software Version 6.10 - 6.20 :
• Added remote transponder interface information
• Added ability to switch between internal and external GPS flight plan
sources
• Added optional dedicated Traffic Page
• Added softkey to Map Page to enable/disable traffic display
• Added ability to enable/disable ‘Traffic Not Available’ audio alert
• Added ability to enable/diable traffic data on Synthetic Vision display
• Added ability to change the layout of PFD1 between full-screen and
split-screen in normal mode via the Display Setup Page
• Added arrows to PFD traffic and terrain messages to indicate traffic
and terrain alerts which are outside the Synthetic Vision field of view
• Added display of peak EGT temperature to bar graph display on Engine
Page when Lean Mode is active
• Added softkey to Terrain page
• Changed EGT gauge in EIS strip to display the cylinder with the tem-
perature closest to its own peak value when Lean Mode is active
• Changed AP NAV Softkey on PFD Page to cancel armed GS Mode on
the first press if GPS Mode is active and LOC and GS Modes are both
armed

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G
RR-4
Rev Date Description
G May, 2012 System Software Version 6.20 to 6.30:
• Added ability to adjust PFD pitch attitude offset, using the PFD Setup
page.
• Added ability to configure the initial MFD page that is displayed after
powerup, using the Display Setup page.
• Added ability to display synthetic vision field of view on the map.
• Added configurable data fields to display current climb gradient in
percent or altitude gain per nautical mile.
• Added runway number labels to runway extension lines on map.
• Added items to Map Setup page to adjust visibility of water labels, park
and land cover areas, runway numbers, and runway extension lines.
• Simplified requirements for availability of autopilot VNAV mode, and
reduced the need for pilot acknowledgement before VNAV mode can
be activated.
• Changed screenshot utility to be activated when Menu key is pressed
and held.
• Changed selected altitude data field on PFD to flash in conjunction
with armed autopilot VNAV indicator if an altitude has not been
selected prior to VNAV descent.
• Changed Fuel Calculator display on Engine page to show fuel quantity
and pressure gauges if space is available.
• Changed wind direction display on PFD to use system units settings for
heading offset.
• Changed display of XTK data fields to more closely resemble G1000
presentation.
• Improved flight log to more closely match airframe timer, and to
account for time spent with the engine running while on the ground
before or after a flight.
System Software Version 6.30 - 6.40 :
• Added option to display G-meter on PFD.
• Added option to display track-up orientation on PFD HSI.
• Added support for GTS 8xx active traffic system.
• Added support for GNS 480.

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G i
Table of Contents
Section 1 System Overview........................................................................... 1
1.1 Line Replaceable Units .............................................................................................1
G3X Single Display............................................................................................................... 4
G3X Dual Display ................................................................................................................. 5
Split-Screen vs. Full-Screen Configurations ............................................................................ 6
External Navigators (Optional).............................................................................................. 6
Integrated Autopilot (Optional)............................................................................................. 7
1.2 Display Overview ......................................................................................................8
1.3 Secure Digital (SD) Cards .........................................................................................9
1.4 G3X Controls............................................................................................................10
1.5 System Power-up ....................................................................................................12
1.6 System Operation ...................................................................................................13
Display Operation............................................................................................................... 13
PFD Display Configuration.................................................................................................. 16
G3X System Annunciations................................................................................................. 17
AHRS Operation................................................................................................................. 18
1.7 Accessing System Functionality.............................................................................19
Menus ............................................................................................................................... 19
Data Entry.......................................................................................................................... 21
Pages................................................................................................................................. 22
Main Page Softkeys ............................................................................................................ 27
Flight Planning Softkeys...................................................................................................... 38
Nearest Page Softkeys ........................................................................................................ 39
1.8 Accessing the Information (INFO) Page ................................................................39
Viewing GPS Receiver Status .............................................................................................. 40
Position.............................................................................................................................. 43
Data Fields and Layout (Full-Screen MFD) ........................................................................... 44
1.9 System Settings .......................................................................................................45
Transponder....................................................................................................................... 46
Data Bar Fields................................................................................................................... 47
Display............................................................................................................................... 49
Sound................................................................................................................................ 52
Units.................................................................................................................................. 53
Date & Time ....................................................................................................................... 54
Position.............................................................................................................................. 55
Alarms............................................................................................................................... 55
Setting Airport Criteria........................................................................................................ 57
Section 2 Flight Instruments........................................................................ 59
2.1 Flight Instruments...................................................................................................59
Airspeed Indicator.............................................................................................................. 62
Attitude Indicator............................................................................................................... 64
Altimeter............................................................................................................................ 65

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Table of Contents
Vertical Speed Indicator (VSI).............................................................................................. 69
Vertical Deviation Indicator and VNAV Indicator.................................................................. 69
Horizontal Situation Indicator (HSI) ..................................................................................... 71
Trim and Flap Position Indicators (optional)......................................................................... 84
Heading Strip and Turn Rate Indicator................................................................................. 85
OBS Mode ......................................................................................................................... 86
2.2 Supplemental Flight Data ......................................................................................87
Outside Air Temperature ..................................................................................................... 87
Wind Data ......................................................................................................................... 88
2.3 Vertical Navigation (VNAV) ....................................................................................89
Using the VNAV Feature ..................................................................................................... 90
Section 3 Engine Indication System ............................................................ 93
3.1 EIS Display & ENG Page..........................................................................................93
ENG Page Softkeys (Example Configuration) ....................................................................... 97
3.2 Lean Assist Mode (Optional) ..................................................................................97
3.3 Fuel Calculator (Optional) ....................................................................................101
Fuel Calculator Softkeys.................................................................................................... 103
Confirming Fuel Quantity.................................................................................................. 104
Confirm Fuel Quantity Softkeys......................................................................................... 104
3.4 CAS Messages (Optional) .....................................................................................106
Section 4 CNS Interface............................................................................. 109
4.1 Auto-tuning Frequencies (Optional)....................................................................109
4.2 Remote Transponder Interface (Optional)..........................................................111
Transponder Mode Selection............................................................................................. 114
Entering a Transponder Code............................................................................................ 116
IDENT Function ................................................................................................................ 116
Flight ID Reporting ........................................................................................................... 117
Section 5 GPS Navigation........................................................................... 119
5.1 Introduction...........................................................................................................119
Compass Arc.................................................................................................................... 119
5.2 Using Map Displays...............................................................................................120
Map Page Setup............................................................................................................... 121
Map Range...................................................................................................................... 125
Map Panning ................................................................................................................... 126
Fuel Range Ring............................................................................................................... 128
Measuring Bearing and Distance ...................................................................................... 129
Topography...................................................................................................................... 130
Satellite View ................................................................................................................... 131
Map Page Traffic............................................................................................................... 132
Map Symbols ................................................................................................................... 132

Garmin G3X Pilot’s Guide
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Table of Contents
5.3 Airways ..................................................................................................................134
5.4 Waypoints ..............................................................................................................136
Nearest Information ......................................................................................................... 141
Weather Information........................................................................................................ 143
Intersections .................................................................................................................... 144
NDBs................................................................................................................... 145
VORs................................................................................................................... 145
User Waypoints ................................................................................................................ 146
Automatic Waypoint Selection .......................................................................................... 150
5.5 Airspace..................................................................................................................151
Airspace Alert Messages................................................................................................... 152
Smart Airspace................................................................................................................. 152
5.6 Direct-to Navigation Using the G3X....................................................................153
Section 6 Flight Planning............................................................................ 157
6.1 Introduction...........................................................................................................157
Flight Plan Data Fields...................................................................................................... 158
Manually Switching Between Internal and External Flight Plan Sources.............................. 160
Failure of the External GPS Navigation Source................................................................... 161
6.2 Flight Plan Creation Using the G3X .....................................................................162
6.3 Flight Plan Storage USing the G3X......................................................................164
6.4 Flight Plan Activation Using the G3X ..................................................................165
6.5 Flight Plan Editing.................................................................................................166
Adding Waypoints to an Existing Flight Plan...................................................................... 166
Editing Flight Plan Speed, Fuel, and/or Name.................................................................... 168
Copying Flight Plans......................................................................................................... 171
Deleting Flight Plans ........................................................................................................ 171
Inverting a Flight Plan ...................................................................................................... 173
Importing/Exporting Flight Plans....................................................................................... 174
6.6 Approaches (Without External Navigator Configured) .....................................174
Selecting an Approach...................................................................................................... 175
Activating Vectors-to-Final................................................................................................ 178
Section 7 Hazard Avoidance....................................................................... 181
7.1 SiriusXM Weather...................................................................................................181
SiriusXM Datalink Weather Advisory.................................................................................. 181
Activating Services ........................................................................................................... 182
SiriusXM Weather Products ............................................................................................... 182
Using SiriusXM Weather Products...................................................................................... 193
7.2 Terrain ....................................................................................................................197
Synthetic Vision................................................................................................................ 198
Terrain Information........................................................................................................... 198
Terrain Views.................................................................................................................... 199

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Table of Contents
Terrain Settings ................................................................................................................ 200
Terrain Alerts.................................................................................................................... 202
7.3 Traffic Systems ......................................................................................................205
Traffic Information Service (TIS) (Optional)......................................................................... 205
Garmin GTS 800 Traffic..................................................................................................... 212
Section 8 Additional Features.................................................................... 221
8.1 Synthetic Vision (SVX) ..........................................................................................222
Synthetic Vision Operation................................................................................................ 223
8.2 SafeTaxi®...............................................................................................................235
SafeTaxi Cycle Number and Revision................................................................................. 236
8.3 ChartView ..............................................................................................................236
Aircraft Symbol................................................................................................................. 238
Chart Range..................................................................................................................... 239
Jeppesen Database-published NOTAMs ............................................................................ 239
8.4 FliteCharts®...........................................................................................................240
Aircraft Symbol................................................................................................................. 242
Chart Range..................................................................................................................... 243
FliteCharts Cycle Number and Expiration Date .................................................................. 243
8.5 Airport Directory Data..........................................................................................244
8.6 SiriusXM Radio Entertainment (Optional) ...........................................................245
Activating SiriusXM Satellite Radio Services ...................................................................... 246
Using SiriusXM Radio........................................................................................................ 247
8.7 Vertical Power (Optional).....................................................................................250
8.8 Electronic Checklists (Optional)...........................................................................253
8.9 Flight Data Logging ..............................................................................................253
Section 9 Integrated Autopilot (Optional)................................................ 255
9.1 Integrated Autopilot Operation ..........................................................................256
Controls........................................................................................................................... 256
G3X Autopilot Status Box................................................................................................. 259
Integrated Autopilot Modes.............................................................................................. 261
9.2 Vertical Modes.......................................................................................................262
Pitch Hold Mode (PIT)....................................................................................................... 263
Selected Altitude Capture mode (ALTS) ............................................................................. 264
Altitude Hold Mode (ALT) ................................................................................................. 265
Vertical Speed Mode (VS) ................................................................................................. 267
Vertical Navigation Mode (VNAV)..................................................................................... 269
Glidepath Mode (GP) (WAAS Only)................................................................................... 273
Glideslope Mode (GS)....................................................................................................... 274
9.3 Lateral Modes........................................................................................................277
Roll Hold Mode (ROL)....................................................................................................... 278
Heading Mode (HDG)....................................................................................................... 279

Garmin G3X Pilot’s Guide
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Table of Contents
GPS, VOR & LOC Modes ................................................................................................... 280
Approaches without Vertical Guidance.............................................................................. 285
Approaches with Lateral + Vertical Guidance .................................................................... 289
Coupled Approach............................................................................................................ 293
9.4 Integrated Autopilot Alerts .................................................................................294
Section 10 Annunciations & Alerts ............................................................ 295
10.1 Miscellaneous Message Advisories ...................................................................295
10.2 System Status Messages (INFO Page) ...............................................................297
10.3 Aural Alerts..........................................................................................................302
10.4 PFD Annunciations and Alerting Functions.......................................................302
Uncertain Heading ........................................................................................................... 302
External Navigator Messages (Optional)............................................................................ 303
CAS Messages (Optional) ................................................................................................. 303
Terrain Annunciations....................................................................................................... 305
Traffic Annunciations ........................................................................................................ 306
Integrated Autopilot Alerts (Optional) ............................................................................... 306
Vertical Power Fault Indications ........................................................................................ 308
Section 11 Appendices............................................................................... 309
Appendix A: Data Field Options.................................................................................309
Appendix B: Utilities ...................................................................................................315
Flight Log......................................................................................................................... 315
Track Log ......................................................................................................................... 317
Heading Line.................................................................................................................... 321
Weight & Balance ............................................................................................................ 322
EPE Circle ........................................................................................................................ 324
Proximity Waypoints ......................................................................................................... 324
Appendix C: SD Card Use and Databases..................................................................327
Installing and Removing SD Cards .................................................................................... 327
G3X Databases ................................................................................................................ 328
Updating G3X Databases ................................................................................................. 331
Exporting Track Logs and User Waypoints.......................................................................... 334
Importing/Exporting Flight Plans....................................................................................... 334
Flight Data Logging.......................................................................................................... 334
Appendix D: Map Datum and Location Formats ......................................................335
Map Datums.................................................................................................................... 335
Location Formats.............................................................................................................. 335
Appendix E: General TIS Information........................................................................337
TIS vs. TAS/TCAS............................................................................................................... 337
TIS Limitations ................................................................................................................. 337

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Table of Contents
Appendix F: Abnormal Operation..............................................................................341
Loss of GPS Position......................................................................................................... 341
Hazard Display with Loss of GPS Position.......................................................................... 341
G3X System Failure Annunciations.................................................................................... 342
Unusual Attitudes............................................................................................................. 343
Reversionary Mode (Full-Screen)....................................................................................... 344
Failure of the External GPS Navigation Source................................................................... 344
Synthetic Vision Troubleshooting....................................................................................... 346
Appendix G: Display Symbols ....................................................................................347
VFR Symbols .................................................................................................................... 347
IFR Symbols ..................................................................................................................... 348
Airspace Symbols ............................................................................................................. 350
Appendix H: Glossary..................................................................................................353
Appendix I: License Agreement and Warranty .........................................................359
Contact Garmin................................................................................................................ 359
Software License Agreement............................................................................................. 359
Limited Warranty.............................................................................................................. 359
AOPA Airport Directory Notice .......................................................................................... 360
AC-U-KWIK LICENSE AGREEMENT.................................................................................... 361
SiriusXM Satellite Radio Service Agreement ....................................................................... 361
Weather Data Warranty.................................................................................................... 361
Index.......................................................................................................................Index-1

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G 1
System Overview
System
Overview
Flight
Instruments EIS
CNS
Interface
GPS
Navigation
Flight
Planning
Hazard
Avoidance
Additional
Features
Integrated
Autopilot Annun/Alerts Appendix Index
SECTION 1 SYSTEM OVERVIEW
The G3X System presents flight instrumentation, position, navigation,
communication, and identification information to the pilot using Wide VGA (800x480)
flat-panel color display(s). The seven-inch diagonally measured display(s) provides
22 square-inches (each) of viewing area.
1.1 LINE REPLACEABLE UNITS
The system consists of the following Line Replaceable Units (LRUs):
• Garmin Display Unit (GDU) 375 (with XM)
– Single Display: Split Primary Flight Display (PFD) & Multi Function Display (MFD)
– Multiple Displays: MFD (recommended)
• GDU 370 (without XM)
– Single Display: Split Primary Flight Display (PFD) & Multi Function Display (MFD)
– Multiple Displays: MFD, PFD, or split-screen
GDU 37X

Garmin G3X Pilot’s Guide
190-01115-00 Rev. G
2
System Overview
System
Overview
Flight
InstrumentsEIS
CNS
Interface
GPS
Navigation
Flight
Planning
Hazard
Avoidance
Additional
Features
Integrated
AutopilotAnnun/AlertsAppendixIndex
• GSU 73
–Garmin Sensor Unit sub-system for the G3X (Air Data Computer (ADC), Engine/
Airframe Unit, and the Attitude and Heading Reference System (AHRS))
– ADC: Processes data from the pitot-static system and outside air tem-
perature (OAT) sensor.
– Engine/Airframe Unit: Receives and processes signals from the engine
and airframe sensors.
– AHRS: Provides aircraft attitude and heading information to the PFD.
The AHRS contains advanced sensors (including accelerometers and rate
sensors) and interfaces with the Magnetometer to obtain magnetic field
information, with the ADC to obtain air data, and with the GDU to obtain
GPS information. AHRS operation is discussed later in this section.
GSU 73