At what altitude must spinning stop during OCF spin training?

In spin training, particularly regarding out-of-control flight (OCF), safety is a critical focus. The altitude at which spinning must stop during such training is set to ensure that pilots have sufficient time and altitude to recover from a spin and return the aircraft to a controlled flight state. Stopping the spin at 10,000 feet Mean Sea Level (MSL) provides an adequate safety margin, allowing for effective recovery procedures without the imminent risk of ground impact. This altitude is commonly used because it grants pilots enough vertical space to execute recovery steps, including gaining control of the aircraft after a spin. It minimizes the risks associated with ground proximity that would be present at lower altitudes. Lower altitudes, as in the other options, would not provide the same level of safety and recovery capability.