Hinged surface of an aeroplane wing, to control roll (7)

I believe the answer is:

aileron

(Other definitions for aileron that I've seen before include "Wing control flap" , "Banking controller" , "Movable part of an aircraft's wing" , "Aircraft control flap" , "Lateral control in aircraft" .)

I've seen this clue in the Irish Times (Simplex) and The Irish Times.

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