What is the primary function of an aircraft's autopilot system?

The primary function of an aircraft's autopilot system is to assist pilots by automatically managing the aircraft’s flight path. Autopilot systems are designed to reduce the workload of pilots by controlling various aspects of flight, including altitude, speed, and direction. This allows pilots to focus on other important tasks, such as monitoring systems and communicating with air traffic control.

While autopilot systems can enhance safety during flight by maintaining stability and precision, they do not directly manage ground handling operations, take control in emergencies, or solely aim to improve fuel efficiency. Instead, their core purpose is to provide automated assistance during flight, making the operation of the aircraft smoother and more efficient for pilots.