FAA Approved Airplane Flight Manual Supplement

190-00716-03 Rev. 3 Hawker Beechcraft B300 and B300C King Air
FAA APPROVED Page 43 of 139
AUTOMATIC FLIGHT CONTROL SYSTEM
AILERON MISTRIM (amber or annunciation on PFD)
Indicates a mistrim of the ailerons while the autopilot is engaged. The autopilot cannot trim the
airplane in roll. During large changes in airspeed, engine failure, or single engine operation,
illumination of this message may occur. If the autopilot is disconnected while this message is
displayed, high roll forces are possible. The following procedure should be followed:
1. Control Wheel ............................................................................................................. GRIP FIRMLY
2. Aileron Tab Knob ............................................ ROTATE SLOWLY IN DIRECTION OF INDICATED
MISTRIM UNTIL THE ANNUNCIATION EXTINGUISHES
If the annunciator stays extinguished and no other annunciations illuminate:
3. Continue to operate the autopilot in a normal manner after the annunciation extinguishes.
If the annunciator remains illuminated or reappears with no changes in airspeed or configuration from the
previous trimmed condition:
3. Control Wheel ............................................................................................................. GRIP FIRMLY
4. Aileron Tab Knob .................................... ROTATE SLOWLY IN THE DIRECTION OF INDICATED
MISTRIM UNTIL ANNUNCIATION EXTINGUISHES
5. AP/YD DISC / TRIM INTRPT Button ............................................................ PRESS and RELEASE
(Pilot’s or Copilot’s control wheel)
6. Aileron Trim ................... USING AILERON TAB KNOB, MANUALLY RE-TRIM AIRPLANE
The autopilot should be considered inoperative until the cause of the mistrim has been investigated
and corrected. Yaw damper may be re-engaged and used normally.
In RVSM Airspace and Autopilot Inoperative:
7. Altitude ....................................... MONITOR AND MAINTAIN ASSIGNED ALTITUDE MANUALLY
Record each altimeter reading for contingency procedure use
NOTE
The standby altimeter must be corrected for position error using the Altimeter Correction –
Standby System chart in the Performance section of this supplement.
8. Advise ATC of loss of the autopilot system . Perform appropriate RVSM contingency
procedures outlined in the operator’s RVSM manual for the loss of automatic altitude hold
capability.