PRIMARY FLIGHT DISPLAY (PFD) FAILURE
#1 PFD Failure
If a failure occurs in the #1 Primary Flight Display (Pilot’s PFD) the MFD
will automatically enter Reversionary Mode and provide Flight, Navigation,
Communication, and Engine information on the display. Verify the MFD
automatically entered Reversionary Mode. If it did not enter Reversionary
Mode automatically, press the red button on the bottom of the left audio
panel.
Check the #1 PFD circuit breaker to ensure it is pushed in. If it is open, try
resetting it (push in). If it pops back out, DO NOT reset it.
The COM 1 and NAV 1 Frequency Boxes are blanked out with red x’s. If
a transmission is made on COM 1, it will be broadcast on 121.5 MHz.
COM 1 and NAV 1 may be used as normal though. Use NAV 2 or GPS for
navigation.
The following annunciations will be shown on the PFD:
TAWS FAIL – Terrain Avoidance Warning System has failed.
HDG NO COMP – Only one source for heading information, not able to compare to
second source.
ROL NO COMP – Only one source for roll information, not able to compare to
second source.
PIT NO COMP – Only one source for pitch information, not able to compare to
second source.
IAS NO COMP – Only one source for airspeed information, not able to compare to
second source.
ALT NO COMP – Only one source for altitude information, not able to compare to
second source.
BOTH ON GPS 2 – Both PFD units are receiving GPS data from the No. 2 GIA unit.
BOTH ON AHRS 2 – Both PFDs are receiving AHRS 2 information.
BOTH ON ADC 2 – Both PFDs are only receiving ADC 2 information.
GMA 1 FAIL – GMA 1 is inoperative. A communication failure with GMA 1 (Pilot’s
Audio Panel) has occurred. If COM 1 is selected on the pilot’s audio panel, the
pilot’s transmissions will be broadcast on 121.5 MHz.
To Next Page
Loading...
Need help?
General