At what minimum height can the autopilot operate during approach with vertical path reference?

The correct choice is based on the operational capabilities of the Dassault Falcon 7X's autopilot system during an approach with vertical path reference. The autopilot is designed to enhance safety and precision during approach and landing phases of flight, and it has specific minimum height limitations depending on the phase of operation.

In this case, the Falcon 7X autopilot can maintain operation down to a minimum height of 80 feet during an approach with a vertical path reference. This capability allows the aircraft to manage descent profiles and provide steering commands to the pilots, especially as they approach minimums for a safe landing.

Choosing 80 feet as the minimum altitude ensures that there is enough time for pilot intervention, should the autopilot encounter a situation where manual control is necessary. This height also balances the need for automation with the pilot's ability to monitor and respond to potential abnormalities as the aircraft approaches the runway.

Higher altitudes, such as 100 feet or more, may reduce the efficiency of autopilot systems during the final approach, whereas heights like 50 feet and 60 feet fall below safe operational thresholds. Thus, understanding these minimums helps in preparing for successful landings while aggressively managing safety protocols.