Which of the following is a secondary flight control example?

• A. Slats/Flaps
• B. Ailerons
• C. Rudder
• D. Elevator

Answer: (A)

Secondary flight controls are devices that adjust the lift and stability of the aircraft rather than directly commanding its attitude in normal flight. Slats and flaps fit here because they change wing shape and surface area to increase lift, especially at takeoff and landing, lowering stall speed and allowing slower flight. They aren’t used to steer the aircraft in steady flight; that role belongs to primary controls, which directly control roll, pitch, and yaw: ailerons manage roll, elevator handles pitch, and the rudder handles yaw. So slats and flaps enhance performance and stability during specific phases, while the others are essential for establishing and maintaining the aircraft’s orientation in normal flight.