What are the three phases of spin entry?

The three phases of spin entry are correctly identified as poststall gyration, incipient spin, and steady state spin.

During poststall gyration, the aircraft experiences uncommanded movements due to the aerodynamic characteristics of a stall. As the airflow separates from the wings, the aircraft can begin to rotate without maintaining controlled flight. This phase often includes unpredictable rotations and changes in attitude.

Once the aircraft transitions into incipient spin, it starts entering a spin but has not yet stabilized into a fully developed spin. In this phase, the aircraft exhibits characteristics of spin behavior, but can still be influenced and controlled by pilot inputs, allowing for corrective measures to be taken if necessary.

Finally, in the steady state spin phase, the aircraft is in a fully developed spin with consistent rotational behavior. The spin has stabilized, and the aircraft exhibits predictable spinning motion, which requires specific recovery techniques to regain controlled flight.

Understanding these three phases is vital for pilots to recognize the stages of a spin and take appropriate actions during each phase to ensure safety and proper recovery techniques.