12 GMC 307 (AFCS MODE CONTROLLER) INSTALLATION
This section contains general information as well as installation information for the GMC 307. Use this
section to mount the GMC 307 unit.
Figure 12-1 GMC 307 Unit View (-00 version shown, -20 version has no YD button)
12.1 Equipment Description
The GMC 307 is a Garmin Automatic Flight Control System (AFCS) Mode Controller that can be used in
a G3X installation. The GMC 307 provides a user interface for the autopilot function of the G3X system.
The GMC 307 mounts flush to the aircraft instrument panel using two pawl latches.
12.2 Equipment Available
12.2.1 Required Equipment
GMC 307 w/Yaw Damper
GMC 307 no Yaw Damper
12.2.2 Additional Equipment Required
The following accessories are not provided with the GMC 307 unit. The Installation Kit (Table 12-2) is
required to install the unit.
Table 12-2 Contents of GMC 307 Installation Kit (010-12421-00)
Connector Kit, 15 Pin, Hi Density Male w/Jackscrews
Table 12-3 Contents of Connector Kit (011-01824-00)
Backshell w/Hdw, Jackscrew, 9/15 Pin
Connector, Male, High Density D-Sub,15 CKT
Contact, Pin, Military Crimp, Size 22D
Table 12-1 GMC 307 Part Numbers
G3X/G3X Touch Installation Manual - GMC 307 Installation
Unit Only Part