Plane's control surface (7)

I believe the answer is:

aileron

(Other definitions for aileron that I've seen before include "Near oil (anag)" , "Hinged surface of an aeroplane wing, to control roll" , "Movable wing surface" , "Aircraft's wing foil that controls lateral motion" , "Aeroplane's wing flap" .)

I've seen this clue in The Times.

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