Garmin G3X Touch User manual

FAA Approved AFMS or Supplemental AFM for the Garmin G3X Touch EFIS 190-01754-01 Rev. 4
© Copyright 2019
Garmin Ltd. or its subsidiaries
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Garmin International, Inc.
1200 E. 151st Street
Olathe, KS 66062 USA
Telephone: [phone]
www.garmin.com

190-01754-01 Rev. 4 FAA Approved AFMS or Supplemental AFM for the Garmin G3X Touch EFIS
Page i
Garmin International, Inc
Log of Revisions
FAA Approved
AIRPLANE FLIGHT MANUAL SUPPLEMENT
or
SUPPLEMENTAL AIRPLANE FLIGHT MANUAL
for the
GARMIN G3X TOUCH ELECTRONIC FLIGHT INSTRUMENT SYSTEM
REV
NO.
PAGE NO(S)
DESCRIPTION
DATE OF
APPROVAL
FAA APPROVED
1
ALL
Original Issue
03/15/19
Robert Murray
ODA STC Unit
Administrator
2
2-2, 2-5
Added limitation for
installations with an
autopilot other than
GFC500.
04/05/19
Paul Mast
ODA STC Unit
Administrator
3
1-5, 2-1
Added GPS 175 / GNX
375 as approved IFR
navigators.
5/30/19
Paul Mast
ODA STC Unit
Administrator
4
ALL
Incorporate system
software v8.60 and
associated hardware
changes.
12/20/19
Robert Murray
ODA STC Unit
Administrator

FAA Approved AFMS or Supplemental AFM for the Garmin G3X Touch EFIS 190-01754-01 Rev. 4
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Table of Contents
1General..................................................................................................................1-1
1.1 G3X TOUCH GNSS (GPS/SBAS) NAVIGATION EQUIPMENT APPROVALS.........................1-5
1.2 Abbreviations and Terminology...............................................................................................1-7
2Limitations............................................................................................................2-1
2.1 System Software Requirements...............................................................................................2-1
2.2 Standby Flight Instruments......................................................................................................2-1
2.3 Navigation Systems for IFR Operations..................................................................................2-1
2.4 Databases...................................................................................................................................2-1
2.5 AHRS Operational Area ............................................................................................................2-2
2.6 Magnetic Variation Operational Area.......................................................................................2-2
2.7 Navigation Angle .......................................................................................................................2-2
2.8 ADAHRS Normal Operating Mode ...........................................................................................2-2
2.9 Aerobatic Maneuvers ................................................................................................................2-2
2.10 Other Autopilots...................................................................................................................2-2
2.11 Synthetic Vision ...................................................................................................................2-2
2.12 Moving Maps.........................................................................................................................2-2
2.13 Terrain Display .....................................................................................................................2-2
2.14 Terrain Alerts........................................................................................................................2-3
2.15 Traffic Display.......................................................................................................................2-3
2.16 Surface Operations..............................................................................................................2-3
2.17 Glide Range Ring.................................................................................................................2-3
2.18 Powerplant Gauge Markings...............................................................................................2-3
2.19 Weight and Balance.............................................................................................................2-3
2.20 Data link Products (SiriusXM, FIS-B, and Connext) .........................................................2-3
2.21 Glove Usage..........................................................................................................................2-4
2.22 Service Required..................................................................................................................2-4
2.23 Portable Electronic Devices................................................................................................2-4
2.24 Kinds of Operations.............................................................................................................2-4
2.25 Placards ................................................................................................................................2-5
3Emergency Procedures.......................................................................................3-1
3.1 ADC Failure (GSU 25)................................................................................................................3-1
3.2 Attitude Failure (GSU 25)..........................................................................................................3-1
3.3 Attitude Aligning / Keep Wings Level......................................................................................3-2
3.4 AHRS ALIGN ..............................................................................................................................3-2

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3.5 Autopilot Abnormal Disconnect...............................................................................................3-2
3.6 G3X Touch Altimeter Barometric Window Cyan....................................................................3-2
3.7 EIS Failure..................................................................................................................................3-2
3.8 Erroneous Air Data or Attitude Information (G5 Standby Flight Instrument Installed)......3-3
3.9 G3X Touch Failure Annunciations...........................................................................................3-3
3.10 Heading Failure, Loss of Magnetometer Data, or Magnetic Field Error.........................3-4
3.11 PFD Failure ...........................................................................................................................3-4
3.12 Navigation Data Failure (GPS/VOR/LOC/GS) ....................................................................3-4
3.13 TERRAIN ALERTS................................................................................................................3-5
3.14 WARNINGS, CAUTIONS, and ADVISORIES.......................................................................3-6
4Normal Procedures..............................................................................................4-1
4.1 BEFORE STARTING ENGINE ...................................................................................................4-1
4.2 AFTER STARTING ENGINE ......................................................................................................4-1
4.3 COM Radio Tuning (Optional)..................................................................................................4-2
4.4 Lateral Navigation......................................................................................................................4-2
4.5 APPROACHES ...........................................................................................................................4-3
4.6 Barometric Minimums Alert....................................................................................................4-14
4.7 TRANSPONDER Operation (Optional)...................................................................................4-14
4.8 Disable Electronic Stability Protection (ESP).......................................................................4-15
5Performance .........................................................................................................5-1
6Weight and Balance.............................................................................................6-1
7System Description..............................................................................................7-1
7.1 Primary Flight Instruments.......................................................................................................7-1
7.2 Vertical Deviation Indicators....................................................................................................7-3
7.3 HSI Annunciations.....................................................................................................................7-4
7.4 Course Deviation Indicator (CDI).............................................................................................7-4
7.5 Display of PFD information on MFD........................................................................................7-5
7.6 Engine Indication System.........................................................................................................7-5
7.7 Communication / Navigation / Surveillance System..............................................................7-5
7.8 Remote Transponder Interface ................................................................................................7-5
7.9 Minimum Altitude Display and Alerting ..................................................................................7-6
7.10 AOA Probe (Optional)..........................................................................................................7-7
7.11 GAD 27 Wig Wag (Optional)................................................................................................7-7
7.12 EIS Caution / Warning Lights..............................................................................................7-7

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1 GENERAL
The information in this supplement is FAA-approved and must be attached to the Pilot’s Operating
Handbook and FAA Approved Airplane Flight Manual (POH/AFM) when the airplane has been
modified by installation of the Garmin G3X Touch Electronic Flight Instrument system in accordance
with Garmin International, Inc. approved data, STC SA01899WI.
The information in this supplement supersedes or adds to the basic POH/AFM only as set forth below.
Users of the manual are advised to always refer to the supplement for possibly superseding
information and placarding applicable to operation of the airplane.
The G3X Touch provides one or more of the following functions:
•Primary Flight Display (PFD) –Provides attitude, air data, heading, and navigation information
to the pilot.
•Multi-Function Display (MFD) –Provides pilot awareness of factors that may affect the overall
conduct of the flight such as advanced moving map including terrain, obstacle and traffic alerts,
georeferenced FliteCharts® or Jeppesen® ChartView™ charts and SafeTaxi® airport
diagrams.
•Engine Indication System (EIS) –Provides engine and airframe operating parameters to the
pilot.
The G3X Touch is scalable with a variety of configurations made up of the 7” portrait GDU 470 and the 10”
landscape GDU 460. Installations may consist of one or both display types in any combination from one to
three displays (or up to four displays total in tandem cockpit aircraft). A minimum installation with a single
display may be a standalone MFD or a PFD which can be split screened to provide both PFD and MFD
functions. EIS can optionally be displayed on any GDU except a 7” portrait PFD. Only one display per
cockpit can be installed as a PFD (any second or third display is an MFD).

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Single 7” Portrait GDU (PFD with MFD in split mode, No EIS)
Single 10” GDU (PFD & MFD, EIS Optional)

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Dual 7” Portrait GDUs (PFD & MFD, EIS Optional)
One 10” + One 7” Portrait GDU (PFD & MFD, EIS Optional)

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These displays come with a built-in WAAS GPS receiver for VFR operations and native infrared
touchscreen interface. The system can also interface with an IFR approved GPS navigator for IFR
operations.
PFD installations require the installation of a GSU 25 ADAHRS, GMU 11 magnetometer, GTP 59
temperature probe, and the GAD 27 voltage stabilizer (14V airframes with EIS). For all PFD
installations in aircraft approved for IFR operations, standby instruments and an IFR approved
navigation system are required.
If the installation includes a separate PFD and MFD, reversionary backup is available should a failure
of either display occur. In reversionary mode, the remaining G3X Touch display combines critical flight
instrumentation with engine readouts (if installed) and navigation information in a single-screen
consolidated presentation.
If EIS functions are installed, they require the installation of aremote mounted GEA 24 Engine Airframe
unit and associated engine sensors.
MFD functions are supported by an internal GPS receiver or an external IFR GPS navigator interface.
G3X Touch flight displays can be seamlessly integrated with a variety of radios, transponders, audio
panels, ADS-B, SiriusXM ® data links, mobile devices via Garmin Connext ® and autopilot systems.
Use of this supplement requires the installation of Garmin G3X Touch Electronic Flight Instrument
hardware and system software version 8.0 or later FAA Approved software version in the aircraft.
Pilots are advised to carefully review the contents of this Airplane Flight Manual Supplement before
operating the airplane.
The following table lists the Pilot’s Guide applicable to the respective system software version.
System Software Version
Pilot’s Guide Part Number
8.0 or later
190-02472-00, Rev A or later
USE OF THE AFMS
The following definitions apply to WARNINGS, CAUTIONS and NOTES found throughout the AFMS:
WARNING
Operating procedures, techniques, etc., which could result in personal injury or loss of
life if not carefully followed.
CAUTION
Operating procedures, techniques, etc., which could result in damage to equipment if
not carefully followed.
NOTE
Operating procedures, techniques, etc., which is considered essential to emphasize.

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1.1 G3X TOUCH GNSS (GPS/SBAS) NAVIGATION EQUIPMENT
APPROVALS
To support IFR navigation the G3X Touch must be interfaced to a compatible Garmin GPS or VHF
navigator including the following:
•GNC 300XL / GPS 155XL *
•GNS 4XX(W) / GNS 5XX(W) / GNS 480 *
•GTN 6XX / 7XX *
•GPS 175 / GNX 375 *
•SL30
•GNC 255
•GNC 355/355A *
* requires installation of GAD 29B ARINC-to-CAN converter
In lieu of interfacing G3X Touch to a Garmin IFR navigator, an installation could maintain IFR capability
by retaining non-Garmin GPS and/or VHF Nav radios along with their standalone dedicated CDI.
NOTE
Refer to the Airplane Flight Manual Supplement for the installed IFR approved GNSS
Navigation System for approved operations.
When no external IFR navigator is connected, or when the internal G3X Touch GPS navigation source
is selected by the pilot, the G3X Touch provides VFR flight planning capabilities and guidance on the
HSI. A cyan ‘INT’ and magenta ‘VFR’ annunciation are displayed on the HSI when using the internal
navigation function. When ‘INT’ and ‘VFR’ are annunciated, IFR operations are prohibited.

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1.2 Abbreviations and Terminology
The following glossary is applicable within the airplane flight manual supplement
AC Advisory Circular
ADAHRS Air Data Attitude Heading Reference System
ADC Air Data Computer
ADS-B Automatic Dependent Surveillance-Broadcast
AFCS Automatic Flight Control System
AFM Airplane Flight Manual
AFMS Airplane Flight Manual Supplement
AHRS Attitude Heading Reference System
ALT Altitude
AML Approved Model List
AMMD Airport Moving Map Display
AOA Angle of Attack
AP Autopilot
APV Approach with Vertical Guidance
ARINC Aeronautical Radio Incorporated
ATC Air Traffic Control
ATT Attitude
Baro Barometric
BC Back Course
CAN Controller Area Network
CB Circuit Breaker
CDI Course Deviation Indicator
CFR Code of Federal Regulations
COM Communication
DA Decision Altitude
DG Directional Gyro
ECS Electrical Control System
EIS Engine Indication System
ESP Electronic Stability and Protection
GA Go Around
GP Glide Path
GPSS GPS Steering
FAA Federal Aviation Administration
FAF Final Approach Fix

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FD Flight Director
FIS-B Flight Information Service –Broadcast
FPL Flight Plan
FPM Feet Per Minute
GAD Garmin Adaptor Device
GDU Garmin Display Unit
GEA Garmin Engine and Airframe
GFC Garmin Flight Control
GMU Garmin Magnetometer Unit
GNC 255 Garmin Navigation and Communication Transceiver
GNS Garmin Navigation System
GNSS Global Navigation Satellite System
GNX Garmin Navigator Transponder
GP Glide Path
GPS Global Positioning System
GS Glide Slope or Ground Speed
GSU Garmin Sensor Unit (ADAHRS)
GTN Garmin Touch Navigation
GTP Garmin Temperature Probe
HDG Heading
HSI Horizontal Situation Indicator
IAF Initial Approach Fix
IAS Indicated Airspeed
IDENT Identification button on Transponder
IFR Instrument Flight Rules
ILS Instrument Landing System
INT Internal
K factor Fuel flow transducer calibration factor
LNAV Lateral Navigation
LNAV+V Lateral Navigation with Vertical Guidance
LP Localizer Precision
LPV Localizer Precision with Vertical Guidance
LOC Localizer
LOI Loss of Integrity
MAX Maximum
MDA Minimum Descent Altitude

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MFD Multi-Function Display
MIN Minimum
MMC Multi-Media Card
MSG Message
N/A Not Available
NAV Navigation
NOTAM Notice to Airmen
NRST Nearest
PFD Primary Flight Display
POH Pilot’s Operating Handbook
PTRIM Pitch Trim
OAT Outside Air Temperature
OBS Omni Bearing Selector
ODA Organizational Designation Authorization
REV Revision or Reversion
RNAV Area Navigation
RPM Revolutions per Minute
SBAS Satellite Based Augmentation System
SD Card Secure Digital Card
SFD Standby Flight Display
SL30 Garmin nav/com transceiver
STBY Standby
STC Supplemental Type Certificate
SYNC Synchronize
TAS True Airspeed
TAWS Terrain Alert and Warning System
VDI Vertical Deviation Indicator
TFR Temporary Flight Restriction
VFR Visual Flight Rules
VHF Very High Frequency
VMC Visual Meteorological Conditions
VNAV Vertical Navigation
VOR VHF Omni-directional Range
VSI Vertical Speed Indicator
WAAS Wide Area Augmentation System
XTK Cross Track Error

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YD Yaw Damper

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2 LIMITATIONS
2.1 System Software Requirements
The G3X Touch must utilize the following or later FAA approved software versions for this AFMS revision
to be applicable:
Component
Software
Version
G3X Touch Electronic Flight
Instrument
8.0
NOTE
This section is not intended to be a comprehensive list of approved software. It is
intended to provide a means to determine if this AFMS revision is applicable to the
software that is installed in the aircraft. Do not use this AFMS revision if the
installation has a software version less than that shown in the table above.
2.2 Standby Flight Instruments
Standby Instruments are required for aircraft approved for IFR operations.
2.3 Navigation Systems for IFR Operations
Aircraft approved for IFR operations must use one of the following Garmin navigation systems:
•GNC 300XL / GPS 155XL
•GNS 4XX(W) / GNS 5XX(W) / GNS 480
•GTN 6XX / 7XX
•GPS 175 / GNX 375
•SL30
•GNC 255
•GNC 355/355A
Or, in lieu of interfacing G3X Touch to a Garmin navigation system, an installation could maintain IFR
capability by retaining non-Garmin GPS and/or VHF Nav radios along with their standalone dedicated
CDI.
IFR operations are prohibited when no external IFR approved navigator is connected, or when the
internal G3X Touch GPS navigation source is selected.
2.4 Databases
Databases identified as intended for helicopters must not be used. These databases are identified by
the word “HELI” or “HELICOPTER” in their title, as displayed on the database status page.
Database updates via SD card must be done while the aircraft is on the ground and stationary.
Database transfers or updates are prohibited in flight.

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2.5 AHRS Operational Area
IFR Operations are prohibited north of 72N and south of 70S latitudes. In addition, IFR operations
are prohibited in the following four regions:
1) North of 65° North latitude between longitude 75° W and 120° W
2) North of 70° North latitude between longitude 70° W and 128° W
3) North of 70° North latitude between longitude 85° E and 114° E
4) South of 55° South latitude between longitude 120° E and 165° E
Loss of heading may occur outside of these geographical limits.
2.6 Magnetic Variation Operational Area
IFR operations are prohibited in areas where the magnetic variation is greater than 99.9 degrees East
or West.
2.7 Navigation Angle
The Magnetic/True Navigation Angle (as selected on the System Units page) must match the
navigation angle selected on all interfaced GPS/SBAS navigators.
2.8 ADAHRS Normal Operating Mode
IFR operations are prohibited unless the ADAHRS is receiving valid GPS signals or Air Data.
2.9 Aerobatic Maneuvers
Do not conduct aerobatic maneuvers if uninterrupted attitude information is required on the PFD.
2.10 Other Autopilots
On aircraft with an autopilot other than a GFC 500, the pilot must select FPL Source to External on
the PFD when using the autopilot in navigation (NAV or APR) modes. For those aircraft, it is
prohibited to use the autopilot in navigation modes when FPL Source is selected to Internal on the
PFD.
2.11 Synthetic Vision
The synthetic vision presentation must not be used as the sole reference for aircraft control (without
reference to the primary flight instruments).
The synthetic vision presentation must not be used as the sole reference for navigation or
obstacle/terrain/traffic avoidance.
If the installed Terrain Alerting system is inoperative, the synthetic vision display on the PFD must be
selected off.
2.12 Moving Maps
Moving map displays (ownship position relative to map features) must not be used as the primary or
sole means of navigation or course guidance.
2.13 Terrain Display