Which action is NOT recommended during spin entry?

Applying ailerons in the direction of the spin is not recommended during spin entry because doing so can exacerbate the situation and lead to an increased chance of a fully developed spin. In a spin scenario, aileron inputs can induce more yaw and complicate recovery efforts. Instead, proper technique involves using coordinated rudder and elevator inputs to manage the aircraft's attitude and prevent an inadvertent spin.

In contrast, holding the aircraft level prior to entry is a good practice to ensure a controlled environment before maneuvering into a spin. Monitoring altitude and airspeed is crucial for situational awareness and helps the pilot understand their performance during the phase of flight, ensuring they can respond appropriately if necessary. Using full rudder as necessary during a spin entry is also an important technique to counteract unwanted yaw and maintain control, especially if the aircraft is already in the process of spinning or approaching it.