TM 1-1510-225-10
3B-31
1. Pitch Wheel
2. Bank Limit Selector / Light
3. Soft Ride Push Button
4. Turn Knob
5. Yaw Damp Engage Push Button
6. Autopilot Engage Push Button
7. Elevator Trim Annunciator.
Figure 3B-15. Autopilot Controller
1. Actuation of the control wheel AP
DISC button. Disengagement is
confirmed by flashes of the AP ENG
annunciator.
2. Pressing the respective vertical gyro
FAST ERECT button.
3. Actuation
of
respective
compass
INCREASE / DECREASE switch.
4. Selection
of
Go-Around
mode.
Disengagement is confirmed by the
AP ENG annunciator flashing five
times and illumination of the GA
annunciators.
5. Pulling the autopilot AP CONTROL
circuit breaker.
6. Pressing the autopilot AP ENGAGE
push button.
7. When transferring between pilot and
copilot flight directors.
Any of the following malfunctions will cause the
autopilot to automatically disengage.
1. Vertical gyro failure.
2. Directional gyro failure.
3. Autopilot power or circuit failure.
4. Torque limiter failure.
Disengaging under any of the last four conditions
will illuminate the AP DISC annunciator and the
flashing MASTER WARNING light. Pressing the
control wheel AP DISC switch will extinguish the AP
DISC annunciator.
(7) Elevator Trim Annunciator. The elevator
trim annunciator indicates UP or DN when a sustained
signal is being applied to the elevator servo. The
annunciator should not be illuminated before the
autopilot is engaged.
