Definition
The hinged control surface on the trailing edge of the right wing that moves up or down to change the lift produced by that wing, causing the airplane to roll about its longitudinal axis.
Plain English
A movable flap on the back edge of the right wing. When it goes up, the right wing drops; when it goes down, the right wing rises. This is how the airplane is rolled left or right.
Context Anchor
Seen in aircraft control diagrams, preflight control checks, and explanations of how an airplane rolls left or right.
Derivation
Aileron comes from the French word for 'little wing.' That captures it well: the aileron is a small, wing-like surface attached to the main wing that changes how much lift that wing produces.
Why Pilots Care
Correct identification and movement of the right aileron are required for coordinated roll inputs and safe maneuvering.
Intuition Check
“Right” does not mean “correct” here. It means the aileron on the airplane’s right wing, as viewed from the pilot’s seat facing forward.
Example Sentence 1
During the preflight control check, the pilot moved the yoke to the right and confirmed the right aileron deflected upward.
Example Sentence 2
During the preflight check, the pilot verifies that the right aileron moves smoothly when the control yoke is turned.