When should flaps be raised during a waveoff?

Raising flaps during a waveoff is critical for ensuring the aircraft maintains optimal performance and safety. The correct procedure dictates that flaps should be raised when airspeed is established and two positive rates of climb are verified.

This step is essential as it allows the aircraft to maintain the necessary lift and control as it transitions from an approach phase to climbing away from the approach path. By confirming that there are two positive rates of climb, pilots can be assured that the aircraft is safely gaining altitude and that it is appropriate to reduce drag by raising the flaps. This enhances climb performance and ensures that the aircraft can safely depart the immediate area of the runway without experiencing control issues that may arise if flaps are raised prematurely.

In contrast, raising the flaps at the moment over the runway or after leveling off does not align with the necessary conditions for safe flight management. Similarly, raising flaps at a specific altitude can be too vague and may not consider the aircraft's current performance parameters, such as airspeed and rate of climb, which are critical for safety during a waveoff.