Autopilot Disconnects - Beechcraft Baron G58 Pilot Operating Handbook

Section 7
Systems Description

AUTOPILOT DISCONNECTS

Normal autopilot disconnects are annunciated with a yellow
flashing [AP] in the AFCS Status Bar accompanied by a two
second autopilot disconnect tone. Normal disconnects are
those manually initiated by the pilot using the AP DISC switch,
the manual trim switch, the AP key or the Go-Around switch.
Abnormal (automatic) disconnects will be accompanied by a
red flashing [AP] in the AFSC Status Bar and a continuous
autopilot disconnect tone. The disconnect tone and red flash-
ing [AP] can normally be cancelled by pressing the AP DISC
switch or the left side of the pitch trim switch. A few failures,
such as loss of power to the servos or turning the Avionics
Switch off, will also render the AP DISC switch inoperative. In
such cases the left side of the pitch trim switch will still cancel
the disconnect tone and flashing annunciator. The following
conditions will cause the autopilot and, in the first six cases,
the yaw damp to disengage.
1. AFCS electrical power failure, including pulling the AP
SERVOS circuit breaker and turning the Avionics Master
switch off.
2. An internal Autopilot System Failure
3. An AHRS malfunction
4. Failure of the Air Data Computer
5. Failure of the PFD
6. Depressing the red AP DISC switch on the pilot's control
wheel.
7. Actuating the left side of the electric pitch trim switch on
the pilot's control wheel.
8. Pressing the AP Mode control key on the MFD
9. Pressing the GA switch on the throttle.
7-78
Model G58
May, 2015