Which situation necessitates a mandatory waveoff?

A mandatory waveoff is required in specific situations to ensure safety during the landing phase of flight. When evaluating the conditions that necessitate such action, let's consider the scenarios presented.

Entering a landing approach with more than a 30° angle of bank (AOB) to become established on final indicates an overly aggressive maneuver that can jeopardize stability and control, especially at lower altitudes. This excessive banking can lead to potential loss of control and makes it difficult to maintain proper glide path and airspeed.

If the landing gear is not down prior to landing, this presents a critical safety issue. Attempting to land without the landing gear deployed can result in significant damage to the aircraft and pose risks to the crew and passengers.

Excessive speed during the landing approach creates challenges in controlling the aircraft's descent and can lead to runway overruns or difficulties in touchdown. It’s vital to be within the appropriate speed parameters to ensure a safe landing.

Since each of these scenarios raises significant safety concerns, they collectively necessitate a mandatory waveoff. This underscores the importance of adhering to established procedures and parameters to maintain safety and efficiency during landing operations. Therefore, a waveoff is required anytime any of these conditions are present, reinforcing the necessity for the aircraft to discontinue