What does the TAD computer relay to the rudder trim tab actuator?

The correct answer is trim input. In the context of the T-6 training aircraft, the TAD (Turn Rate Command/Acceleration Limit) computer processes information related to the aircraft's flight characteristics and pilot inputs. It uses this data to adjust the rudder trim tab actuator, which helps maintain coordinated flight and reduces the pilot's workload by automatically compensating for yaw caused by asymmetric thrust or other factors.

While flight plan data, speed settings, and altitude adjustments are important elements of flight operations, they do not directly pertain to the function of the TAD computer concerning the rudder trim tab actuator. Instead, trim input is a specific adjustment made to the rudder trim, allowing for more precise control and stability during various phases of flight. By utilizing trim input, the aircraft can correct for any unwanted directional changes, enhancing overall flight safety and efficiency.