A drawing of an airplane with the ailerons highlighted in red

Ailerons cause one wing tip to move up and the other wing tip to move down, helping a plane turn. Image Credit: NASA

      movable flaps on the wings of an airplane that are used to control the plane's side-to-side movements

The pilot uses ailerons to turn an airplane to the right or left.

The word "aileron" is French for "little wing."

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