Abnormal Procedures
5-9
signal, take the proper action when a
navigation source has been lost. If on a
published ILS approach, transition to non-
precision approach procedures and
minimums or go missed approach.
AP AHRS Comp
Unavail
If at any time after an initial AP READY
condition has been achieved, one of the
attitude comparator sources becomes
unavailable, this message is presented.
No disconnect will happen and the
autopilot will “fly-through” this event
unaffected.
AP/IFD Comm Fault
If the DFC is unable to recognize the
message data from both IFDs (e.g. a
software mismatch has occurred between
the autopilot and all IFDs), then some
autopilot modes will become unavailable.
In this event, Pitch Hold, Roll Hold, Alt
Hold and Straight and Level modes are
still fully functional. Consider cycling
power to the IFDs and autopilot and if that
does not clear the condition, contact
Avidyne Customer Support.
AP MSR Failure
The system is unable to write and access
data to/from the autopilot maintenance
and safety data recorder. The autopilot
will still be fully functional in all pilot-
usable modes but the on-board data
logging has likely stopped and all
autopilot aural alerts will be unavailable
Apply extra vigilance to the autopilot
annunciator status messages along the
top of the PFD due to the absence of the
associated aural alerts. After the flight,
notify an Avidyne Service Center or
Avidyne Customer Support to coordinate
for a repair action.
