Which of the following is a component of the aircraft wing?

• A. Wing Tip
• B. Fuel Tank
• C. Spar
• D. Wing Flap

Answer: (C)

The main concept here is identifying the primary structural element that carries the wing’s bending loads. The spar is the backbone of the wing, running spanwise from root to tip and providing the main load path that resists the bending caused by lift. It’s designed to be the strongest, stiffest component inside the wing and connects to the fuselage to transfer loads into the aircraft structure. Ribs and skin work with the spar to form the airfoil shape and carry some loads, but the spar bears the majority of the bending moment from lift, making it the defining component of the wing’s internal structure.

Wing tips are the outer boundary of the wing and contribute to aerodynamics and tip devices, not the primary load-bearing member. Wing flaps are movable surfaces attached to the trailing edge to change camber and lift during flight, not the primary structural component. Fuel tanks can be housed in the wing, but their purpose is storage, and they aren’t the main structural element that carries lift loads.