What happens during an aircraft stall?

During an aircraft stall, lift is indeed lost due to airflow separation over the wings. When an aircraft exceeds its critical angle of attack, the smooth airflow over the wing is disrupted, causing a significant reduction in lift. This phenomenon occurs when the wing is no longer able to generate sufficient aerodynamic force to support the weight of the aircraft, leading to the stall condition.

Understanding the mechanics of a stall is crucial for pilots and crew members. The point at which this occurs varies depending on factors such as speed, configuration (flaps, landing gear position), weight, and balance. Recognizing the signs of impending stall, such as a change in control responsiveness and increased drag, is essential for effective recovery and maintaining safe operation of the aircraft.

The other options describe effects or situations that may occur in flight but do not accurately define the specifics of an aircraft stall. Recognizing airflow separation as the primary reason for lost lift helps to grasp the concept of stalls and their implications on flight dynamics.