Appendix C Airframe Specific Installation Guidance; Introduction - Garmin G3X Installation Manual

APPENDIX C AIRFRAME SPECIFIC INSTALLATION GUIDANCE

C.1 Introduction
Garmin has included in this manual some installation guidelines to aid the builder in the placement of
various units which make up the G3X. It is at the discretion of the builder whether he or she wants to
follow a typical layout or design an installation completely unique to their aircraft. The following
information is provided as guidance only and does not account for variations in specific
installations.
Although the potential GMU 44 mounting locations shown in this manual have been
tested on appropriate type aircraft, Garmin cannot take into account the wide variation of
aircraft specific installations and therefore cannot guarantee the provided locations will
work for all installations in a particular aircraft type. Garmin strongly recommends the
installer conduct a thorough review of Section 8.3 when choosing an appropriate
mounting location for the GMU 44. In addition to reviewing the guidance provided in
Section 8.3, the installer should use the Garmin GLS tool to conduct a GMU 44 site
evaluation prior to permanent installation of the GMU 44 mounting bracket. The GLS
tool and the AHRS/Magnetometer Installation Considerations document (which contains
instructions) can be downloaded from www.Garmin.com. Please contact your G3X
dealer for additional information on setup and use of the GLS tool.
The typical installations contained in this manual are known to fit each aircraft. In
addition, custom brackets and mounting which should be incorporated to properly
support the units are detailed in the typical installation. Unsupported avionics or inferior
mounting brackets can contribute to cracking of the mounting trays or a unit becoming
dislodged, intermittent or fail completely. The guidance of FAA advisory circulars AC
43.13-1B and AC 43.13-2A may be found useful.
It is recommended the builder at least review the typical installation prior to embarking
on his/her own design, and determine what additional components may be required to suit
their particular installation.
C.1.1 GMU 44
The integrity and reliability of the G3X heading and attitude information is entirely dependent upon the
installation quality of the GMU 44 Magnetometer. Garmin strongly recommends the purchase of the pre-
fabricated parts indicated in Table C-1. Failure to use Garmin approved brackets may result in severe
degradation of system performance. Garmin cannot guarantee acceptable system performance if any
variations from these designs are made. It is essential that installation accuracy requirements specified in
the following sections be maintained in any GMU 44 installation, if the installer chooses to follow the
typical installation guidance.
Airframe
Lancair IV/IV-P
Lancair ES/ES-P
RV-7/7A, -9/9A
RV-10
G3X Installation Manual – Airframe Specific Installation Guidance
190-01115-01
NOTE
Table C-1. GMU 44 Mount Kits
GMU 44 Mount Kit
011-01788-00
011-01779-00
011-01796-00
011-01779-00
Page C-1
Revision E