What is the minimum speed to which an aircraft should slow during confirmed engine failure when below 150 KIAS?

The minimum speed to which an aircraft should slow during confirmed engine failure when below 150 KIAS is set at 125 KIAS. Maintaining this speed is critical as it allows for optimal control response and adequate airflow over the aircraft's flight control surfaces, which is especially essential when dealing with the challenges of engine failure.

Slowing down to 125 KIAS provides a balance that reduces the risk of stalling while also ensuring that the aircraft retains sufficient maneuverability. It helps the pilot maintain a safe margin above the stall speed, particularly in the event that a recovery maneuver is needed. The importance of this speed is emphasized in training, where it serves as a guideline for pilots to execute effective engine-out procedures while ensuring aircraft control and safety.

In contrast, slowing too much below 125 KIAS could increase the risk of stall, especially if maneuvering is necessary, while attempting to maintain a speed higher than 125 KIAS might not offer the margin needed to handle the engine failure effectively. Balancing these considerations is critical in situations where engine performance is compromised.