Game Composites GB1 GameBird, Maintenance Manual

Page: 194 / 269

Maintenance Manual GB1 GameBird
Page date: April 24, 2020
40-9
Magnetometer
The Garmin GMU 11 Magnetometer is a remote mounted LRU that interfaces
with a Garmin ADAHR (GSU 25) to provide flight attitude and heading data
for flight instrumentation. An Attitude and Heading Reference System
combines the functions of a Vertical Gyro and a Directional Gyro to provide
measurement of Roll, Pitch, and Heading angles. Using long-life solid-state
sensing technology, the GMU 11 Magnetometer uses magnetic field
measurements to create an electronically stabilized AHRS.
The GMU 11 provides magnetic information to support the function of the ADAHRS (GSU 25).
Electrical power for Magnetometer operation is provided via the 35A Avionic CB Switch, supplied through the
Battery Master (essential bus) and 2A FLUX circuit breaker on the circuit breaker panel, located in the RH side
console in the rear cockpit.
Location: RH wing, 500mm outboard of aileron bellcrank access panel
Type: GMU 11 PN 010-01788-00
Manufacturer: Garmin International, Inc.
1200 East 151st Street, Olathe, Kansas 66062, USA
Tel: 913.397.8200
Fax: +1 913.397.8282
Aircraft on Ground (AOG) Hotline: +1 913.397.0836
www.garmin.com
To service the Magnetometer:
1 Remove aileron bellcrank access panel on underside of RH wing
2 Unscrew unit from mounting bracket
3 Move unit out of wing
4 Disconnect electrical connection: unscrew connector fasteners, pull connector off plug
5 Service or replace as required
6 To reinstall, reverse steps 1 – 4
Signature
7 Switch ON Battery & Avionic Master to check function
8 Switch Avionics and Battery Master OFF
NOTE: After installation of a new unit, conduct calibration in accordance with
the Garmin G3X Touch Installation Manual.
No regular maintenance is required for the unit. If defective, the unit must be replaced.
For wiring and connection details, refer to section 24-03
Troubleshooting or additional information:
Refer to Garmin G3X Touch Installation Manual, 190-01115-01_AE, available at
www.gamecomposites.com