What is the minimum airspeed recommended immediately after takeoff during an engine failure?

The recommended minimum airspeed immediately after takeoff in the event of an engine failure is crucial for maintaining control of the aircraft and ensuring the safety of the flight. Typically, this airspeed is derived from the aircraft's specific performance characteristics, including its weight, configuration, and type of operation.

The choice of 110 knots as the minimum airspeed reflects a balance between achieving sufficient lift and maintaining control authority for the pilots. This speed is above the stall speed and allows for effective maneuvering should the need arise to perform an emergency landing or return to the airport. Depending on the aircraft type, this speed also accounts for the need to clear obstacles in the event of a single-engine departure.

In contrast, the other speeds listed do not align with typical recommendations for most general aviation and commercial aircraft. A speed too low can increase the risk of stalling, while overly high speeds might delay the aircraft's ability to climb or maneuver effectively. Therefore, the selection of 110 knots is based on performance data and safety margins, ensuring that the pilots remain in a safe envelope immediately after takeoff in the event of an engine failure.