190-02291-06 Rev. 2
AFMS
– GFC 500 Autopilot in Textron 182 Series
Page 7
–7
PREFLIGHT TEST
During the preflight test the G5 will display PFT in the autopilot status box. The autopilot disconnect tone sounds
at the completion of the preflight test and the PFT annunciation is removed. If GFC 500 fails the PFT, a yellow AP
with a red X is displayed in the autopilot status box on the G5.
MESSAGES AND ANNUNCIATIONS
Autopilot Messages
AFCS Controller Key
Stuck
The system has sensed a key input on the GMC 507 for 30 seconds or
longer.
AFCS Controller Audio
Database Missing
The audio database is missing from the GMC 507. The aural voice alerts
will not be heard.
Servo Clutch Fault
One or more autopilot servos has a stuck clutch. The servo needs service.
Servo Trim Input Fault
The inputs to the trim system are invalid. The trim system needs service.
Autopilot Annunciations
Autopilot has failed. Autopilot and trim are inoperative and flight director is
not available.
Autopilot normal disconnect.
Autopilot abnormal disconnect.
Autopilot has failed. The autopilot is inoperative. FD modes may still be
available.
Autopilot Overspeed Protection mode is active. Autopilot will raise the nose
to limit the aircraft’s speed.
Autopilot Underspeed Protection mode is active. Autopilot will lower the
nose to prevent the aircraft’s speed from decreasing.
Autopilot preflight test is in progress.
Pitch Trim Fail
– Manual Electric Pitch Trim is inoperative.
Elevator Trim Down
– Autopilot is holding elevator nose down force. The
pitch trim needs to be adjusted nose down.
Elevator Trim Up
– Autopilot is holding elevator nose up force. The pitch
trim needs to be adjusted nose up.
AFCS
AP
AP
AP
MAXSPD
MINSPD
PFT
PTRIM
TRIM DOWN
TRIM UP
Summary of Contents for GFC 500
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