Autopilot Control Unit And Display - Piper CHEROKEE ARCHER II Pilot Operating Handbook

Disconnect Methods
The following conditions will cause the autopilot to automatically disconnect:

Electrical power failure, including pulling the AUTOPILOT circuit breaker.

Internal autopilot system failure (including internal AHRS failure).
The following pilot actions will cause the autopilot to disconnect:

Pressing the red AP DISC / TRIM INT button on the pilot's control wheel.

Actuating the manual electric trim switch (if installed).

Pushing the AP Key on the GMC 507 mode controller when the autopilot is engaged.

Pulling the AUTOPILOT circuit breaker.
The red AP DISC / TRIM INT button on the pilot's control wheel will interrupt power to the manual electric trim for
as long as the switch is depressed.

AUTOPILOT CONTROL UNIT AND DISPLAY

AFMS – GFC 500 Autopilot in Piper PA-28 Series
Page 7–4
Figure 7-3: GMC 507 Control Unit (Reference Only)
Figure 7-4: G5 Display (Reference Only)
190-02291-07 Rev. 4