Minimum altitudes for use of autopilot

This regulation sets minimum altitudes for autopilot use during Part 135 operations (commuter and on-demand flights). It doesn't apply to helicopters.

Takeoff/initial climb: Autopilot cannot be engaged below 500 feet above the airport or twice the altitude loss specified in the Airplane Flight Manual (AFM) for autopilot failure, whichever is higher—unless the AFM or Administrator specifies otherwise.

Enroute: Same 500-foot minimum or twice the AFM's cruise malfunction altitude loss applies.

Approach: Autopilot must be disconnected by 50 feet below the decision altitude or minimum descent altitude, with exceptions allowing lower use if the AFM specifies altitude loss and certain conditions are met (coupled approach, visual references established, or VFR weather).

Go-around/missed approach: If the autopilot is already engaged when initiating the missed approach, it may remain engaged. If disengaged, it cannot be re-engaged until reaching the takeoff minimum engagement altitude.

Landing: Approved automatic landing systems have no minimum altitude restrictions when authorized by operations specifications.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*