Game Composites GB1 GameBird, Maintenance Manual

Page: 195 / 269

Maintenance Manual GB1 GameBird
Page date: April 24, 2020
40-10
ADAHRS
The GSU 25 is an LRU that provides AHRS and Air Data information in a
single mechanical package. The GSU 25 interfaces to a remote mounted
GMU magnetometer for heading information and also computes OAT and
TAS from inputs provided by the GTP 59.
Electrical power for ADHRS operation is provided via the 35A Avionic CB
Switch, supplied through the Battery Master (essential bus) and 2A AHRS
circuit breaker on the circuit breaker panel, located in the RH side console
in the rear cockpit.
Location: On vertical Acrotank compartment bulkhead under front instrument panel
Type: GSU 25C PN 011-02929-50
Accessories: GMU 11 install Kit PN 011-04349-90
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 ADAHRS:
1 Remove front instrument panel, refer to section 39-04
2 Disconnect pitot- and static lines
3 Disconnect electrical connection: unscrew connector fasteners, pull connector off plug
4 Remove fasteners
5 Remove unit from airplane
6 Service or replace as required
7 To reinstall, reverse steps 1 – 5
8 Conduct pitot-static test, refer to section 31-05
Signature
9 Check for correct installation
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