What is the primary action during the downwind leg of the circuit?

The primary action during the downwind leg of the circuit is to prepare for landing. This phase is critical as it involves monitoring the aircraft's approach to the runway and ensuring that all necessary preparations and checks are completed before the landing.

During the downwind leg, the pilot typically configures the aircraft for an upcoming landing by adjusting the speed, altitude, and flap settings. Additionally, it is a time to review and confirm the approach checklist, ensure that the landing gear is down if applicable, and align the aircraft’s position for a smooth transition to the base and final legs of the circuit.

While making a radio call to air traffic control could be part of the downwind leg, it is not the primary focus of this phase; rather, communication is ongoing throughout the circuit and depends on specific circumstances. Similarly, climbing to a specified altitude or initiating a turn onto the crosswind leg are actions specific to the earlier stages of the circuit. The emphasis during the downwind leg remains predominantly on preparing for the landing sequence.