The term 'Plane Wing Part' refers to two components of an airplane's wing: the AILERON and the SLAT. An AILERON is a hinged control surface located on the trailing edge of each wing, used to control the aircraft's roll. A SLAT is a movable aerodynamic surface on the leading edge of the wing that helps increase lift at low speeds. Both the AILERON and the SLAT are essential components of an airplane's wing, allowing it to maneuver in the air.