Which flight control surface is responsible for roll in the Cessna 172?

The aileron is the flight control surface responsible for roll in the Cessna 172. Ailerons are located on the outer wings of the airplane and work by moving in opposite directions to control the bank angle of the aircraft. When the pilot moves the control yoke to the left or right, the aileron on one wing deflects upward, which decreases lift on that wing, while the aileron on the opposite wing deflects downward, increasing lift on that side. This differential lift creates a rolling motion, allowing the aircraft to bank and turn in the desired direction.

Understanding the function of the ailerons is crucial for effective aircraft control and maneuvering during flight, particularly during turns or when counteracting external factors such as turbulence. The other surfaces, such as the elevator and rudder, serve distinct roles in pitch and yaw control, while flaps are primarily used for increasing lift during takeoff and landing phases and do not contribute directly to the roll of the aircraft.