FAA Approved Airplane Flight Manual Supplement

Hawker Beechcraft King Air 300/300LW 190-00716-02 Rev. 3
Page 54 of 167 FAA APPROVED
RUDDER MISTRIM (amber or annunciation on PFD)
Indicates a mistrim of the rudder while the autopilot is engaged. The autopilot cannot trim the
airplane in yaw. 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 rudder pedal forces and yawing motion are possible. The following procedure
should be followed:
1. Rudder Pedals ........................................................................................................... HOLD FIRMLY
2. Rudder Tab Knob .................................... ROTATE SLOWLY IN THE DIRECTION OF INDICATED
MISTRIM UNTIL 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. Rudder Pedals ........................................................................................................... HOLD FIRMLY
4. Rudder Tab Knob .................................... ROTATE SLOWLY IN THE DIRECTION OF INDICATED
MISTRIM UNTIL ANNUNCIATION EXTINGUISHES
5. Autopilot ..................................................................................................................... DISCONNECT
6. Rudder Tab Knob ......................................................................... MANUALLY RE-TRIM AIRPLANE
NOTE
Yaw Damper should be considered inoperative until the cause of the mistrim has been
investigated and corrected. The rudder boost may also be inoperative. Many King Air 300
aircraft require the yaw damper to be operative above 11,000 feet MSL, and rudder boost
continuously. Refer to the Limitations section of the Aircraft Flight Manual, or appropriate
Airplane Flight Manual Supplement for further information.
7. Autopilot .............................................................................................................................. ENGAGE
In RVSM Airspace and Autopilot Inoperative:
8. 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.
9. 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.