Autopilot (A/P) can control the aircraft in a climb, cruise decent and
approach phases of flight or as directed manually by the pilot via the
control knob. It may also be directed by signals from the VHF, GPS,
INS navigation systems. It can also find and maintain a pre selected
heading, altitude, pitch attitude or operate in a split axis configuration.
It requires 115V AC for operation from the aircraft generators or an
external source. If using the latter you need to operate the ground
Electrical interlocks prevent selection or operation unless all the
proper conditions for correct functioning are satisfied.
Mandatory interlocks are at least one yaw damper switched on and it's
disengage flag out of view, turn and pitch controller in neutral detent,
operating vertical gyro if these conditions are correct you will be
able to engage the aileron switch. To engage the elevator switch the
aileron switch must be engaged and the cruise stabilizer trim switch
must be in the normal position.
The auto pilot will disengage if any of the following actions or conditions
occur. Yaw damper positioned to off, capt or co pilot press autopilot
release switch, power to vertical gyro is lost, switching compass source
or power to A/P aileron (roll) is lost. Elevator channel disengage
will occur if the stabilizer trim switch is activated, pitch channel
selector is switched (A or B) cruise trim switch is activated, A/P and
cruise trim cutout switches positioned to cutout, electrical power to
the A/P elevator (pitch) is lost.
A/P mode will return to manual (turn and pitch knob) if any of the following
occur reference VHF/GPS/INS is switched, turn and pitch controller moved
out of detent, ILS frequency is switched while in approach mode.