Model 560XL Section III – Operating Procedures
Abnormal Procedures
190-02313-03 Rev. 8 Textron Aviation Citation 560XL
FAA Approved 3-31
AILERON MISTRIM
AIL or AIL Annunciator displayed
Indicates a mistrim of the roll axis while the autopilot is engaged. The servo is providing force in the
indicated direction. If the autopilot is disconnected while this message is displayed, high roll forces
are possible. The following procedure should be followed:
IF MOMENTARILY DISPLAYED
During prolonged maneuvering, particularly single engine maneuvering, momentary illumination
of the message may occur.
Procedure completed
IF CONTINUOUSLY DISPLAYED
CAUTION
HIGH CONTROL WHEEL FORCES MAY BE PRESENT WHEN THE
AUTOPILOT IS DISENGAGED.
1. Control Wheel – GRIP FIRMLY.
2. AP YD DISC/TRIM INT button – PRESS and RELEASE.
3. Roll Trim – AS REQUIRED.
4. 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.
5. With autopilot inoperative, perform appropriate RVSM contingency procedures for the loss of
automatic altitude hold capability.
Procedure completed
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