What indicates a developed spin has occurred?

A developed spin is characterized by a sustained and consistent rate of rotation along the aircraft's axes. This means that the aircraft experiences uniform yaw and roll rates, indicating a stable spin state where the aerodynamic forces contributing to the spin are in balance. In this phase, the aircraft does not simply oscillate through various rotational rates, but maintains these consistent rates as it continues to spin downward.

Once a spin has fully developed, the aircraft typically will not stabilize in altitude; instead, it will continue to descend. Recovery from a spin typically involves specific maneuvers that counteract the forces keeping the spin in motion and regain control of the aircraft. These dynamics are crucial in understanding how an aircraft behaves during a spin and how pilots can effectively manage such situations.