A plane stalls when the wing stops producing enough lift to support the aircraft’s weight. This doesn’t mean the engine stops—it’s an aerodynamic phenomenon. The key factors are: 1. Angle of Attack (AoA) – The stall occurs when the wing’s angle relative to the oncoming air exceeds the critical angle (usually around 15°–20° for most planes). Beyond this angle, airflow separates from the wing, and lift drops sharply. 2. Airspeed – If the plane flies too slowly for its current configuration (flaps,