Flight control surfaces are movable parts on an aircraft's wings and tail that help control its direction and stability during flight. The main types include ailerons, elevators, and rudders. Ailerons are located on the wings and control roll, allowing the aircraft to tilt side to side. Elevators, found on the tail, manage pitch, which affects the aircraft's nose angle. The rudder, also on the tail, controls yaw, helping the plane turn left or right. These surfaces work together to ensure smooth and safe flight. Pilots manipulate them using the control yoke or stick in the cockpit, allowing for precise adjustments to the aircraft's movement. Proper functioning of flight control surfaces is essential for maintaining balance and responding to changing flight conditions.