Plain English Meaning

Parts of the airplane — usually movable panels on the wings or tail — that the pilot or design uses to shape the airflow and change how the airplane flies.

Full Definition

Movable or fixed surfaces on an airplane that change how air flows over the structure in order to control flight, modify lift, increase drag, or improve handling. Common examples include flaps, slats, spoilers, ailerons, elevators, rudders, and trim tabs.

Context Anchor

You meet this term when studying the wing and tail surfaces that move or are shaped to control how the airplane responds in flight.