Plain English Meaning

Anything about the airplane that wasn't quite right during the flight, written down so it can be looked at and fixed.

Full Definition

In post-flight context, items noted by the pilot where the airplane's condition, performance, or equipment did not match the expected normal state during the flight just completed. Discrepancies are recorded so they can be inspected, repaired, or signed off by maintenance before the airplane is flown again.

Context Anchor

Seen during post-flight inspections, aircraft logbook entries, and conversations with maintenance after a pilot notices something unusual about the airplane.

Derivation

From Latin discrepare, meaning 'to sound differently' or 'disagree.' In aviation, a is something that disagrees with the expected normal condition of the airplane.