Mooney M20M, Pilot Operating Handbook

Page: 350 / 377

190-02291-18 Rev. 5 AFMS – GFC 500 Mooney M20M/M20R/M20S Series
Page 7–7
PREFLIGHT TEST
During the preflight test the G5, GI 275, or G3X will display PFT in the autopilot status box. At the completion
of the preflight test, 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, GI 275, or G3X.
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 is 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.
Yaw Damper normal disconnect.
AFCS
AP
AP
AP
MAXSPD
MINSPD
PFT
PTRIM
TRIM DOWN
TRIM UP
YD