Failed Heading During Ground Operations; System Failure Without An Associated Failure Display; Failure Of Cooling Fans [Pfd Fan Fail] - Beechcraft Baron G58 Pilot Operating Handbook

Section 3A
Abnormal Procedures
FAILED HEADING DURING GROUND OPERA-
TIONS
(RED "X" OVER [HDG] FLAG ON PFD)
Interference from GPS repeaters operating inside nearby han-
gars or magnetic anomalies caused by nearby structures can
cause an intermittent loss of heading display while the airplane
is on the ground. Moving the airplane more than 100 yards
away from the source of the interference should alleviate the
condition. Takeoff should not be attempted until fault clears.
SYSTEM FAILURE WITHOUT AN ASSOCIATED
FAILURE DISPLAY
There is a remote chance that a system failure could occur
WITHOUT an associated failure indication (Alert, Red X, or
Exceedence Display.)
1. Use other system information to determine if the system
failure is valid.
If it cannot be determined that the system failure is the result of
an erroneous display:
2. Assume the failure is valid and follow the appropriate
Emergency or Abnormal procedures.

FAILURE OF COOLING FANS [PFD FAN FAIL],

[MFD FAN] or [AVIONICS FAN] Advisory Message
Presentation of one or more of these advisory messages indi-
cates that the PFD fan has failed, the MFD fan has failed, or
the Avionics Fan has failed. Cooling extends the life of this
equipment, but is not required for continued operation.
1. Continue to destination.
2. Repair as soon as practical.
3A-18
Model G58
April, 2008