Plain English Meaning

A panel on the back edge of the wing that the pilot lowers to make the wing produce more lift at slower speeds. Lowering flaps also adds drag, which helps the airplane slow down and descend more steeply.

Full Definition

A hinged, movable surface attached to the trailing edge of the wing, inboard of the ailerons, that can be deflected downward to increase lift and drag. Flaps are extended in stages to allow slower flight speeds for takeoff and landing while maintaining controlled airflow over the wing.

Context Anchor

You will encounter flaps during preflight checks, takeoff setup, , landing, and .