Multiple choice general knowledge science & technology Which among the following parts is used to counter the Yaw acting on an aeroplane? Rudder Aileron Wings Flaps Reveal answer Fill a bubble to check yourself A Correct answer Explanation The rudder is the vertical control surface on the aircraft's tail that controls yaw - the left-right movement of the aircraft's nose. Ailerons control roll, wings provide lift, and flaps increase lift for slower speeds.