What components are included in the primary flight control set?

• A. Ailerons, Elevator, and Rudder.
• B. Flaps, Slats, and Spoilers.
• C. Trim and spoilers.
• D. Nacelle anti-ice and engine anti-ice components.

Answer: (A)

Direct control of the aircraft’s attitude in normal flight comes from the primary flight control surfaces: ailerons manage roll, the elevator handles pitch, and the rudder controls yaw. These three surfaces, tied to the pilot’s inputs, are what you use for the essential maneuvers and to hold coordinated flight. The other items are not the primary set: flaps, slats, and spoilers are high-lift or drag devices used to change lift or speed, trim adjusts the neutral surface position to reduce pilot effort rather than directly controlling attitude, and nacelle/engine anti-ice systems protect against ice. So the best choice is the trio that directly governs orientation: ailerons, elevator, and rudder.