Bei einigen Airbus-Flugzeugen gibt es im PFD die Meldungen CHECK PFD bzw. CHECK PFD1 (2). Sie werden ähnlich angezeigt wie CHECK ATT oder WINDSHEAR (Siehe FCOM: "Indication and Recording Systems", 1.31.40 FLAGS AND MESSAGES DISPLAYED ON PFD - 1.31.40 page 30 seq 001). [1]
CHECK ATT or CHECK PFD or CHECK PFD1 (or 2) flag (amber)
CHECK ATT appears when there is a disagreement (of a least 5°) in the attitude information displayed by the two PFDs. The CHECK ATT flag appears on both PFDs, and a caution appears on the ECAM.
CHECK PFD appears when the DMC detects a disagreement between the two PFDs. The CHECK PFD flag appears on both PFDs.
CHECK PFD 1(2) appears when the DMC detects a disagreement between its own computation and its displayed information. The CHECK PFD 1(2) flag appears on the relevant PFD.
Kommentar: [2]