Linked from
The 13 pages that link to Flight control surfaces, each with the reason it gives.
Control volumeBroader topic: Mass and energy cross this boundary in the control-volume balances.
AircraftBroader topic: Ailerons, elevators, and rudders steer aircraft by changing airflow forces.
AirplaneBroader topic: Ailerons, elevators, and rudders let pilots control an airplane’s motion.
Model aircraftBroader topic: Elevators, rudders, and ailerons steer many powered and gliding models.