ATPL Canadian Meteorology, Radio Aids to Navigation, and Flight Planning (SAMRA) 2026 – 400 Free Practice Questions to Pass the Exam

An increased performance shear refers to changes in aerodynamic conditions, particularly relating to wind speed and direction, that can significantly impact the lift generated by an aircraft. When performance shear increases, it typically means that there is a greater difference in wind velocity across a relatively small vertical distance. This can affect the aircraft's airflow, increasing the lift produced.

As wind shear intensifies, especially in climb or descent phases, the velocity of the oncoming airflow can enhance the lift if managed effectively. When a plane encounters a strong updraft due to increased performance shear, it could result in a higher effective angle of attack and increased lift until the limits of the aircraft or performance parameters are reached.

This dynamic interaction highlights why an increase in performance shear correlates with an increase in lift under certain conditions. It's essential for pilots to recognize these aerodynamic principles when navigating in varying wind conditions, ensuring safe and effective flight maneuvers.