What happens during a spin in aviation?

During a spin in aviation, the primary characteristic is that one wing is more stalled than the other. This asymmetrical stalling creates an imbalance in the lift generated by each wing, resulting in a rotation of the aircraft about its vertical axis. The wing that is more stalled produces significantly less lift than the other wing, which leads to a combination of yaw and roll away from the wing that is creating more lift. This difference in the stall behavior of the wings is crucial in understanding how spins develop and how pilots can potentially recover from them.

In this context, while both wings may reach a stalled state at some point, it is the unequal stalling that is fundamental to life, leading to the spin motion. The high rate of descent and other phenomena, while associated with spins, stem from this initial condition of one wing stalling more than the other.