Which conditions must be met regarding descent for SWOA approaches?

The choice indicating that a stable descent must be maintained throughout the SWOA (Stabilized Waypoint Operation Approach) is the correct answer because it aligns with the operational requirements designed to ensure safety and efficiency during the approach phase of flight.

Maintaining a stable descent allows the aircraft to follow a predictable flight path, minimizing the risk of abrupt maneuvers that could lead to unsafe situations. This stability is crucial for the pilot's workload management, ensuring that they can focus on other critical aspects of the approach, such as monitoring airspeed, configuration, and communication with air traffic control.

A stable descent throughout the approach also enhances the predictability of the aircraft’s trajectory, which is important for both the pilot’s situational awareness and for the overall safety of other aircraft in the vicinity. By adhering to these parameters, pilots can effectively manage their descent profile, aiding in smoother operations and ensuring adherence to air traffic management protocols.

While other options suggest different conditions, they do not encapsulate the fundamental need for stability in the descent phase, which is paramount during SWOA approaches.