Figure 2-3 - Gsu 25D Adahrs; Figure 2-4 - Gmu 11 Magnetometer - Garmin G3X Touch Maintenance Manual

2.1.3 GSU 25D ADAHRS
The GSU 25D is an LRU that provides Air Data Computer and Attitude Heading Reference System
(ADAHRS) information. The GSU 25D interfaces to a remote mounted GMU 11 magnetometer for
heading information, and computes OAT and TAS from inputs provided by the GTP 59. The GSU 25D is
connected to existing primary pitot/static system. Only one GSU 25D is approved for installation and
interface by this STC.
2.1.4 GMU 11 Magnetometer
The Garmin GMU 11 Magnetometer is a remote mounted device that provides magnetic field
measurements to the GSU 25D to support computation of flight attitude and heading data.
2.1.5 GTP 59 Temperature Probe
The Garmin GTP 59 is an externally mounted temperature probe that provides raw outside air
temperature data. The device is a three-wire temperature probe interface.
Maintenance Manual
G3X Touch EFIS Part 23 AML STC
Figure 2-3 – GSU 25D ADAHRS
Figure 2-4 – GMU 11 Magnetometer
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