What is the minimum altitude at which the autopilot may remain engaged during nonprecision approach operations?

The minimum altitude at which the autopilot may remain engaged during nonprecision approach operations is 200 feet above ground level (AGL). This altitude is established to ensure adequate safety margins during phases of flight where precision navigation is crucial, such as when transitioning from the approach phase to landing.

At 200 feet AGL, the aircraft is typically in a position where the pilot can take manual control if necessary and is low enough to be sufficiently aligned with the runway, minimizing the risk of terrain or obstacle impacts. Engaging the autopilot at this altitude allows for a stable descent profile but also mandates that the pilot is prepared to intervene if needed.

This regulation is part of operational safety standards aimed at ensuring that pilots maintain control of the aircraft in critical phases of flight, especially when transitioning from autopilot to manual flight.