What is the primary function of an autopilot system?

The primary function of an autopilot system is to relieve the pilot's need to manually control the aircraft. Autopilots are designed to manage the aircraft's flight path without constant input from the pilot. This allows the pilot to focus on monitoring the flight and managing other critical tasks, particularly during long flights or in complex situations that may require additional attention.

While autopilot systems can aid in navigation and may have features that enhance fuel efficiency or aid communication with air traffic control, these functions are secondary to their main purpose of providing a level of automation that reduces pilot workload. By automating the control of the aircraft’s heading, altitude, and speed, the autopilot allows for more efficient operation and enhances overall safety, as pilots can respond more effectively to system alerts and emergent situations.