Garmin GFC 600 User Manual

GFC 600 AFCS Part 23 AML STC Maintenance Manual Page 28
190-01938-00 Revision 13
5.5 GI 285 Troubleshooting
Symptom
Recommended Action
No annunciations visible
• Recycle AUTOPILOT circuit breaker to cause PFT to start. All
annunciations will flash briefly during PFT.
• Verify power/ground wiring to GI 285
• Verify wiring between GI 285 and GMC 605.
5.6 GTA 82 Troubleshooting
Symptom
Recommended Action
PFT will not pass
• Verify wiring between GMC 605 and GTA 82.
• Verify power/ground wiring to GTA 82.
5.7 GSA 80/81 Troubleshooting
Symptom
Recommended Action
PFT will not pass
• Verify wiring between GMC 605 and GSA 80/81.
• Verify power/ground wiring to GSA 80/81.
Servo will not engage (no control
resistance felt)
• Verify wiring of AP DISC/TRIM INT wiring from circuit breaker through AP
DISC/TRIM INT switch to the servo
• Verify cable tensions.
5.8 Backshell/Backplate Connectors
The following figures depict the unit connectors, with views as described.
Figure 5-1 – GMC 605 Backplate, viewed from rear of rack

Garmin GFC 600 Specifications

General

System Type	Digital Autopilot System
Control Wheel Steering (CWS)	Yes
Yaw Damper	Optional
Automatic Trim	Yes
Vertical Navigation (VNAV)	Yes
Level Change (LVL) Mode	Yes
Flight Director	Yes
Safety Features	Overspeed Protection (OSP)
Interface	Interfaces with Garmin navigators and displays
Aircraft Type	Certified aircraft
Control Modes	Includes heading hold, altitude hold, vertical speed, and navigation tracking
Integration	Seamless integration with Garmin avionics
Approval	Certified