What systems help maintain stability and control in flight in the TH-73A?

• A. Only aileron systems
• B. Ailerons and elevators only
• C. Trim systems, specifically elevator trim and rudder trim
• D. Only the autopilot system

Answer: (C)

In the TH-73A, stability and control in flight are significantly aided by the trim systems, which specifically include elevator trim and rudder trim. These systems are designed to reduce the pilot's workload and optimize the aircraft's handling characteristics.

Elevator trim allows the pilot to make minor adjustments to the pitch of the aircraft without constant control input. This is crucial during extended flight operations, as it helps maintain a stable flight attitude and relieves the pilot from maintaining constant pressure on the control stick.

Rudder trim complements this by adjusting the aircraft's yaw, ensuring that it maintains a balanced flight path and enhances stability, especially during maneuvers or in response to different loading conditions.

While ailerons and elevators are key components for altering the aircraft's attitude during flight, and the autopilot system does contribute to overall control, the specific role of trim systems in maintaining stability and control cannot be understated, making this the most accurate response regarding the systems that assist in maintaining stability and control during flight.