What is the downwind speed and power setting for a takeoff (T/O) flap configuration?

The downwind speed and power setting for a takeoff flap configuration are based on the operational parameters of the aircraft. During the downwind leg of the pattern, pilots are generally looking for a safe and manageable speed that allows for effective maneuverability, while also ensuring the aircraft remains within the optimal performance range.

Choosing 120 KIAS at approximately 42% power is appropriate for a number of reasons. At this speed, the aircraft is well aligned with the optimal airspeed for maintaining stability and control while flying in a downwind configuration. It balances the need for performance with the aircraft's handling characteristics, which is crucial when preparing for the next phase of flight, such as turning onto the base leg towards landing.

Moreover, setting the power at around 42% provides sufficient thrust to maintain this airspeed, ensuring that the aircraft can respond adequately to any required adjustments or maneuvers during the approach. This combination supports a smooth transition to the next segment of the flight while keeping fuel efficiency in mind and allowing flexibility for speed adjustments if necessary.

The other options present either speeds that are too high or too low, or power settings that do not align with standard practice, which could affect the pilot's ability to maintain control and efficiency during the downwind.