Page 31
Section - 3
EMERGENCY PROCEDURES
FAA Approved
Original Issue: Feb 28, 2006
Hawker 850XP Pro Line 21 Airplane Flight Manual
AUTOPILOT MALFUNCTIONS
(continued)
AUTOPILOT TRIM FAIL ANNUNCIATION
Illumination of a red TRIM annunciation on the PFDs indicates that the autopilot pitch trim system
has failed. The autopilot will not automatically disengage, but it may not function properly.
NOTE: A mistrimmed condition may occur in conjunction with the pitch trim failure.
When the autopilot is disengaged in a mistrimmed condition, expect an abrupt
change in control force.
Flight controls ............................................................Hold firmly
AP..............................................................................Disengage
Retrim airplane if necessary
AP..............................................................................As required
AUTOPILOT DISENGAGEMENT
The autopilot can be disengaged by:
1. Pushing the AP switch on either control wheel (Yaw Damper will disengage)
2. Pushing the GO-AROUND button on either control wheel (Yaw Damper remains engaged)
3. Actuation of either control wheel trim switch (Yaw Damper remains engaged)
4. Pushing the AP ENG button on the Flight Guidance Panel (Yaw Damper remains engaged)
5. Lowering the AP/YD DISC bar on the Flight Guidance Panel (Yaw Damper will disengage)
Autopilot disengagement will initiate an aural tone which can be cancelled by a second actuation
of the:
1. AP switch
2. GO-AROUND button
3. Control wheel trim switch
CAT II FAILURE
If a red CAT II is observed on either PFD during a CAT II approach, execute a missed approach.
ELECTRONIC STANDBY INSTRUMENT SYSTEM (ESIS)
When a red ATT fail flag and a yellow HDG flag are displayed, the ESIS HDG information can
continue to be used in straight and level unaccelerated flight.
For Training Purposes Only