Spins are prohibited at pressure altitudes above what height?

The correct answer is that spins are prohibited at pressure altitudes above 22,000 feet. This limit is set for safety reasons, as the aerodynamic characteristics of the T-6A can become unpredictable at higher altitudes, increasing the risk of recovery difficulties. At pressure altitudes above 22,000 feet, the environment may not provide sufficient air density for effective control surfaces' operation, which is critical during spin recovery. The risk of not being able to recover effectively from a spin is significant, especially in terms of potential altitude loss and the aircraft's performance capabilities.

The other altitude options represent levels where spins may still be flown, provided that adequate recovery procedures are in place. However, the operational limits established on spin maneuvers specifically denote that maintaining safe flying practices and emergency procedures becomes paramount above the 22,000 feet threshold. This ensures that pilots can maintain control of the aircraft and execute recoveries safely within the T-6A's operational envelope.