At what speed does a critical engine failure typically occur?

A critical engine failure typically occurs at takeoff due to the high workload and specific conditions the aircraft experiences during this phase of flight. Takeoff is characterized by low speeds and complex situations, including the need for precise control and the balance of thrust. An engine failure at this stage can have a significant impact on the airplane's ability to maintain controlled flight and climb performance since it requires maximum thrust from the remaining operating engine(s) to achieve and sustain flight.

During climb, cruise altitude, and descent, while engine failures are serious at any phase, they tend to stress different aspects of aircraft operation. In the climb phase, the aircraft is already established in a climb, and single-engine performance is often a part of the standard operating procedures for multi-engine aircraft, making the emergency more manageable than during the critical phase of takeoff. At cruise altitude, the aircraft is generally at a stable condition, and handling an engine failure can often be done with less immediate danger compared to the takeoff scenario. Descent involves reduced power requirements, and thus, managing an engine failure is typically less critical than during the initial takeoff phase.

Therefore, takeoff is indeed the critical phase where such an engine failure has the highest potential for a significant operational impact, aligning with the