What is the minimum use height for autopilot during an ILS approach?

The minimum use height for autopilot during an ILS approach is set at 50 feet AGL (Above Ground Level). This altitude is established to ensure that there is adequate control of the aircraft before making critical decisions related to landing.

Using the autopilot down to this height allows the flight crew to focus on monitoring the approach and preparing for a smooth landing without excessive workload. It also helps to mitigate risks associated with manual flying during the final moments of the approach, where situational awareness and timely reactions are most crucial.

The chosen minimum ensures safety while allowing for the benefits of automation, as pilots can safely disengage the autopilot at a point that balances the advantages of automation with the need for pilot intervention.