1) Airplane flaps 2) Airplane parts 3) Banking aids 4) Banking enablers 5) Flap neighbors 6) Flight controllers 7) Movable wing parts 8) Parts of a plane 9) Parts of airplane wings 10) Parts of some wings 11) Plane wing parts 12) Wing flaps 13) Wing parts 1) Flaps 
On an aircraft, the ailerons are a control surface usually on the trailing edge of the wings. The ailerons are used to control roll by generating asymmetric wing lift. The ailerons are on the outside of the wings and operate oppositely (If one goes up, the other goes down).