Eclipse 500 System Manual page 452

Section 16. Autoflight
16.7 Abnormal Procedures
16.7.1 Uncommanded Autopilot Mode Change
When the autopilot is engaged in a higher mode of operation than the default modes
of PITCH and ROLL hold, it is possible that due to a loss of navigational signal that
the current mode cannot be maintained. If this occurs the autopilot automatically
reverts to PITCH and ROLL hold, and an AP/FD MODE CHANGE caution appears to
alert the pilot.
16.7.2 Pitch Mistrim
Should the pitch autotrim system become unable to reduce the amount of force on
the elevator, and it exceeds approximately 20 lbs, a PITCH MISTRIM caution
message appears. This requires the autopilot be disengaged and manually trimmed
for pitch to reduce the resultant forces on the sidestick.
CAUTION:
Prepare for high stick forces when disengaging the autopilot. Stick forces may
exceed 20 pounds.
16.7.3 Stall Protection or Stick Pusher Failure
In the event that both the stall warning system and stick pusher become unavailable
a STALL PROTECTION FAIL caution message appears. A similar message appears
in the event of only a stick pusher failure; in this case it is a STICK PUSHER FAIL
caution message. If either message appears in flight, it requires the pilot to increase
the final approach speed, possibly increase landing distance based on the flap
setting and limit bank angles to less than 30° to protect against potential stalls in the
landing environment.
16.7.4 Autopilot and Yaw Damper Failure
The appearance of an AUTOPILOT FAIL caution message likely indicates the failure
or loss of power to the aileron or elevator autopilot servos. A reset of the electronic
circuit breakers associated with each servo is recommended before attempting to
reengage the autopilot.
NOTE:
If the autopilot remains deactivated RVSM requirements are no longer met and if
operating in RVSM airspace, the pilot must notify Air Traffic Control.
A YAW DAMPER FAIL caution likely indicates the failure or loss of power to the
rudder servo. A reset of the electronic circuit breaker associated with this servo is
recommended before attempting to reengage the autopilot. If a reset is unsuccessful
the aircraft must descend below 20,000 ft and maintain airspeed below 250 knots per
aircraft limitations.
NOTE:
See Airplane Flight Manual, Section 2- Limitations
432
Copyright © — Eclipse Aviation Corporation
Eclipse 5OO Systems Manual
Version 2.0 April 2007