What is the critical airspeed for interim power reactivation in KCAS?

The critical airspeed for interim power reactivation is designated as 55 KCAS (Knots Calibrated Air Speed). This airspeed is vital to ensure that the aircraft maintains sufficient aerodynamic stability and control when transitioning to a lower power setting before reactivating interim power. The specific value of 55 KCAS is determined through flight test data and aerodynamic analysis to ensure the aircraft performs safely and effectively during this critical phase.

Maintaining this airspeed allows for adequate control authority and ensures that pilots can respond to any changes in flight conditions or power requirements effectively. Flying below this threshold could increase the risk of encountering control issues or potentially lead to an unsafe flight condition. Therefore, understanding and adhering to the correct critical airspeed is crucial for safe operations in this context.