FAA AMT Airframe Practice Exam 2026 – All-in-One Study Guide to Master Aviation Maintenance Technician Certification!

In an autopilot system, the follow-up signal is the signal that nullifies the input signal to the ailerons. The follow-up signal is generated by a gyro coupled to the ailerons. This signal helps to prevent overshooting and oscillations by providing a corrective input that opposes the initial input, ensuring smooth and stable control surface movement.

The other options are not correct because:

- The error signal indicates the difference between the desired and actual position, which is used by the autopilot system to make adjustments.

- The feedback signal provides information on the current status of the control surface position.

- The control signal is the output signal generated by the autopilot system to actuate the control surfaces based on the input signals and system logic.