Dual PFD Error Conditions
Entegra EXP5000 PFD
-72-
600-00157-000 Rev. 06
5.4 Dual PFD Error Conditions
ADAHRS Miscompares
In dual-PFD equipped aircraft, the two PFDs compare their ADAHRS
measurements for fault detection. If airdata, attitude, or heading
miscompare occurs, both PFD's will display the appropriate warning
message adjacent to the affected instrument.
Figure 26. ADAHRS Alert Messages
PFD-to-PFD Communication Fault
If, at any point, one PFD loses contact with the
other, a yellow error message will appear at the
lower right corner of the HSI reading “No COM
with Pilot PFD” or “No COM with Copilot PFD.”
Notes:
The ADAHRS miscompare messages are suppressed if:
• One of the ADAHRS has failed, is in alignment, or is in fast erect.
• The ADAHRS source selection switch is set to ADAHRS1 or ADAHRS2.
• A PFD-to-PFD communication failure has occurred.
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