What formula is used to determine a standard rate turn?

The formula used to determine a standard rate turn is TAS (True Airspeed) divided by 10, plus half of that result. This method provides a straightforward way of calculating the number of degrees per second required to achieve a standard rate turn, which is defined as a turn that changes the aircraft's heading by 3 degrees per second.

To break it down: when you take the True Airspeed, dividing it by 10 gives you an initial value that corresponds to the turn rate. By adding half of that value, you adjust it to account for the specific conditions of the aircraft's speed and performance, ensuring that the turn maintains the standard rate of 3 degrees per second regardless of variations in airspeed.

This formula is particularly useful for pilots to remember, as it allows for quick mental calculations during flight, assisting in maintaining situational awareness and effective maneuvering. Utilizing this approach leads to more consistent and controlled turns while ensuring compliance with performance standards in flight operations.