What is the minimum altitude to not descend below with an actual failed engine unless on profile for landing?

The minimum altitude to not descend below with an actual failed engine unless on profile for landing is 2000 feet AGL. This means that, in the event of an engine failure, aircraft are generally advised to maintain this altitude until they are configured for landing and within the appropriate approach profile.

Maintaining this altitude ensures sufficient height for pilots to troubleshoot the situation, assess the options for a controlled landing, and execute necessary emergency protocols. At 2000 feet AGL, pilots have ample time to react, and the aircraft still has sufficient altitude to navigate back to the airport or reach an alternate landing site if needed.

Choosing an altitude less than this would significantly reduce safety margins and increase the risk in an emergency situation, particularly if an engine failure occurs during critical phases of flight. This guidance is based on aviation safety standards designed to enhance pilot response and increase survivability in the event of an engine failure.