The aileron trim actuator causes deflection of _____________________________.

• A. The right aileron only
• B. Both ailerons
• C. The aileron trim tabs
• D. The left aileron only

Answer: (B)

Aileron trim is used to balance the airplane’s roll without continuous pilot input, so the trim mechanism moves both wings’ surfaces together. The aileron trim actuator drives a linkage that deflects the trim surfaces on both ailerons in a coordinated way, producing a small, symmetrical change in lift that stabilizes the roll. If only one aileron moved, it would cause unintended rolling instead of a neutral trim; the system is designed to deflect both surfaces to keep the wings properly balanced.