Which configurations of the aircraft are prohibited during spins?

In the context of aircraft operations, particularly during spin maneuvers, certain configurations can significantly affect the stability and controllability of the aircraft. The correct choice indicates that extending the landing gear, flaps, and speed brakes collectively during spins is prohibited due to the adverse aerodynamic effects they can have.

When all three components are extended, the aircraft's aerodynamic characteristics can be drastically altered, leading to an increased risk of spin entry and complications in recovering from a spin. Landing gear and flaps are typically designed to enhance lift at lower speeds and provide aerodynamic control during standard flight conditions. However, during a spin, these configurations can exacerbate the loss of control and prevent the pilot from effectively recovering.

While there may be designated training manuals or safety protocols that dictate configurations to avoid during spins, the inclusion of all three components—landing gear, flaps, and speed brakes—in a single choice highlights the cumulative risk of maintaining an unstable configuration while attempting to recover from an aerodynamic stall. Therefore, the correct response encompasses the most comprehensive set of configurations that should be avoided to ensure flight safety.