Abnormal Procedures
5-5
OTHER ERROR MODES
Autopilot failures that prevent any operation are annunciated
across the center of the PFD mode annunciator strip in amber
(yellow) as shown in the example immediately below.
IFD Autopilot Annunciator
AUTOPILOT INOP
The autopilot is unusable but the
system cannot determine why.
Recommend immediate transition to
hand-flying and if no automatic restart
has been initiated, consider cycling the
autopilot circuit breaker one time.
AUTOPILOT INOP
AHRS
COMPARATOR FAIL
Dual AHRS system
: The system has
concluded that one of the AHRS is
unavailable (not failed and not aligning).
Single AHRS system
: The system has
concluded that the turn coordinator has
failed or is not available.
AUTOPILOT INOP
SELF TEST FAIL
The autopilot failed its power-up self-
test. If the fault does not clear itself
within 15 seconds, consider cycling
power to the autopilot via the circuit
breaker or avionics master.
AUTOPILOT INOP
AHRS FAIL
All on-board AHRS have failed,
rendering the autopilot non-functional.
Change 1