Page 30
Section - 3
EMERGENCY PROCEDURES
FAA Approved
Original Issue: Feb 28, 2006
Hawker 850XP Pro Line 21 Airplane Flight Manual
AUTOPILOT MALFUNCTIONS
ALTITUDE LOSSES
The maximum altitude losses observed during autopilot malfunction tests were:
Climb .........................................................................450 ft
Cruise ........................................................................300 ft
Descent .....................................................................550 ft
Maneuvering..............................................................170 ft
Non-Precision Approach (one or two engine)..............75 ft
Precision Approach (one or two engine) .................... 75 ft
AUTOPILOT MISTRIM ANNUNCIATION
Illumination of a red boxed E (Elevator) or A (Aileron) annunciation on the PFDs indicate that the
autopilot is flying the airplane in a mistrimmed condition. If the mistrim indication continues for
more than a few seconds:
NOTE: Intentional or automatic stick-free disengagement of the autopilot into an
annunciated red elevator mistrim indication will produce a significant airplane
response in the direction of the mistrim force.
If a continuous mistrim indication is presented, the pilot should brace the flight
controls and disconnect the autopilot. Upon disconnect, the pilot will
experience a force in excess of 25 pounds. Re-engagement of the autopilot
should not be attempted until the reason for the out of trim state has been
isolated and corrected, and the airplane has been returned to a trimmed
condition.
Flight controls ............................................................Hold firmly
AP..............................................................................Disengage
Retrim airplane if necessary
Fuel balance ..............................................................Check and balance as required
AP..............................................................................As required
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For Training Purposes Only