Wind shear can cause a sudden change in which type of airspeed?

Wind shear is a change in wind speed and/or direction with altitude, and it can significantly affect the performance of an aircraft during takeoff and landing phases. When there is wind shear, particularly during low-altitude operations, it can lead to sudden changes in the aircraft's airspeed, particularly indicated airspeed.

Indicated airspeed is the speed shown on the aircraft's airspeed indicator and is directly influenced by dynamic pressure and altitude. A sudden change in the airflow around the aircraft, such as what happens during wind shear, can lead to rapid variations in indicated airspeed. For example, an aircraft may experience a drop in indicated airspeed if it flies into a downdraft or a gain if it encounters an updraft.

This immediate effect on the indicated airspeed is crucial for pilots to understand, as it can impact their ability to control the aircraft effectively during critical flight phases. Therefore, understanding the relationship between wind shear and indicated airspeed is essential for safe flight operations.