The wing is the primary structure that carries the load of the aircraft. The wing also has space to keep fuel.

The wing is attached to the center wing box with the attachment fittings at the chords of the root ribs. The wing structure holds the auxiliary structure, the attachment fittings, and the flight control surfaces. The wing is divided into three zones: inboard, midwing, and outboard.

The center wing is made of a center wing box, which is attached to the frame at the bottom of the fuselage midsection. The center wing box holds the pressure floor panel.

The winglets are installed at each wing tip. They are used to decrease wing tip vortices. Their trailing edge and tip fairings are made of graphite lamination.

The wing leading edge is forward of the front spar and extends from the wing root to the wing tip.

The trailing edge is aft of the rear spar of the wing and extends from the wing root to the wing tip.

The ailerons are the airfoil-shaped devices that supply roll control for the aircraft. The ailerons are attached to the rear spar of each wing. 

There are ground spoilers and multifunction spoilers on the upper trailing edge of the wings. The multifunction spoilers are used to remove lift when the aircraft is in flight. The ground spoilers are used to remove lift when the aircraft is on the ground.

Each wing has three fowler type flaps. The flaps are installed on the wing trailing edge and travel on four tracks.

---