When is the minimum height for precision approaches (PAR/ILS) with autopilot use?

The minimum height for precision approaches, specifically when utilizing autopilot systems, is set at 80 feet above ground level (AGL). This altitude represents the transition point where the autopilot can maintain precise control over the aircraft's descent and approach, ensuring safety and stability as it nears the runway. At this height, pilots must be prepared to take manual control if the autopilot fails or if visibility conditions require immediate intervention.

This height is established in accordance with operational safety standards, allowing for effective decision-making in the critical final phase of an approach. The other altitude options do not align with regulatory guidelines for precision approaches using autopilot, as they either exceed the minimum safety threshold or fall outside the recommended operational practices for maintaining control during landing.