Garmin G3X Touch, Maintenance Manual

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Maintenance Manual 190-02472-02
G3X Touch EFIS Part 23 AML STC Revision 2
Page 27
4.2 Servicing Information
G3X Touch EFIS LRUs maintenance is ‘on condition’ only. No component-level overhaul is required for
the G3X Touch EFIS Part 23 AML STC installation. See section 6 for equipment removal and installation.
4.2.1 On-condition Servicing
‘
On Condition’ replacement and/or servicing should occur when an item exhibits conditions, symptoms,
and/or abnormalities defined in Section 5 of this manual. Replacement and/or servicing should be made
only after the technician troubleshoots the system to the extent determined necessary by using the
guidance in this manual along with common avionics maintenance practices.
NOTE
It is impossible to provide guidance for every conceivable failure scenario within the scope of this manual.
Every effort has been made to provide comprehensive guidance for possible failures. The information in
this document should always be combined with sound aviation maintenance practices and a thorough
knowledge of the system. Use sound avionics maintenance practices when working around or on G3X
equipment.
NOTE
After replacing or servicing electrical components near the GMU 11 magnetometer, the Magnetometer
Interference Test (reference Section 5) and Magnetometer Calibration Procedure (reference Section 7)
must be performed.
The remainder of this document is organized in the following fashion:

Section 4.3 lists maintenance requirements related to the G3X system.

Section 5 provides troubleshooting guidance

Section 6 gives instructions regarding the removal and replacement of physical G3X Touch EFIS
equipment and parts.

Section 7 gives configuration and testing instructions to be accomplished if G3X Touch EFIS
equipment or parts are removed or replaced.

Section 8 specifies system return-to-service procedure.
4.2.2 Required Tools
The following tools are needed to perform maintenance tasks on G3X equipment:

SanDisk brand SD card, 8GB or smaller

Calibrated Milliohm meter with Kelvin probes or equivalent

Calibrated digital level

Calibrated air data test set (pitot/static ramp tester)

Calibrated VHF NAV/COM/ILS ramp tester or equivalent

Outdoor line-of-site to GPS satellite signals or GPS indoor repeater

Headset/microphone

Ground Power Unit

Calibrated torque wrench

Standard sockets & wrenches

3/32” Hex tool
4.3 Maintenance Intervals
Table 4-1 shows systems and items installed by this STC, which must undergo tests or checks at specific
intervals.