What does the term "stall" mean in aviation?

The term "stall" in aviation refers specifically to a situation where the aircraft exceeds the critical angle of attack. At this critical angle, the smooth airflow over the wings begins to separate, resulting in a significant loss of lift. This phenomenon can occur at any airspeed and any altitude, as it is primarily a function of the angle of attack rather than simply speed or altitude. When a stall occurs, pilots may experience a decrease in control effectiveness and may have to perform corrective actions to regain lift and control.

Understanding stalls is crucial for pilots and crew, as they must recognize the signs leading to a stall, such as changes in aircraft behavior, and be prepared to recover safely. Recognizing the critical angle of attack and how it relates to maneuvers ensures better decision-making during flight. This concept is fundamental to aircraft performance and safety training in aviation.