What is the recommended airspeed to establish for a specific operation according to flight standards?

In aviation, the recommended airspeed for specific operations is often dictated by safety and performance considerations. For many scenarios, such as during approaches or in certain configurations of flight training, a standard reference airspeed helps ensure controlled flight characteristics and optimal responsiveness of the aircraft.

The selection of 90 knots indicated airspeed (KIAS) is generally favored because it balances the requirements for stall margin, control effectiveness, and operational safety. At this airspeed, pilots can maintain a good margin above the stall speed while also ensuring that the aircraft responds well to control inputs.

This speed also serves as a standard for various conditions in flight training, such as during the final approach phase, where maintaining control during configurations like gear down and flaps extended is crucial. It provides adequate time for pilots to react to any sudden changes in the flight situation while managing the aircraft's performance features effectively.

Thus, establishing a recommended airspeed of 90 KIAS is aligned with best practices in aviation safety and operational efficiency.