What does VSSE stand for?

The term VSSE stands for "Velocity Safety Speed for Engine-out." This concept is crucial for pilots, particularly in multi-engine aircraft, as it defines a minimum speed that should be maintained in the event of an engine failure. The purpose of this speed is to ensure that the aircraft has sufficient control authority and can maintain, at the very least, straight flight while eliminating the risk of stall under such critical circumstances.

Maintaining the VSSE provides a safety margin during engine-out operations, helping pilots to manage the aircraft's performance effectively and to prepare for further actions like returning to the airport or diverting to an alternate landing site. This speed is determined based on the aircraft's specific performance characteristics and is a vital part of operational safety protocols.

Understanding this definition and its practical implications can significantly enhance safety practices and situational awareness for pilots, especially in emergency scenarios involving loss of engine power.