Knows flight situations where unplanned spins may occur. Recognizes unintentional incipient spin and knows procedure for recovery P 3. Explains recovery procedure for aircraft used for the practical test. An established spin is an aggravated stall with developed autorotational forces.
Gravity causes a helical path during the descent.
The aerodynamic and inertial forces are balanced. You must upset this balance to recover. The stall, which has directional control, occurs at an angle of attack near 17 degrees. In a spin the down wing may have an angle of attack of 70-80 degrees while the up wing will be between 30 and 40 degrees. The flow of air cannot follow the curve of the wing.