Stall: a loss of lift due to airflow separation, brought on by exceeding the critical Angle of Attack
Angle of Attack: angle between an airfoil’s cord line, and oncoming air
Power on stall: to simulate an accidental stall occurring during takeoffs and climbs
P-factor: creates the left turning tendency in a positive angle of attack (four factors: Torque, corkscrew of slipstream, gyroscopic propeller effect, asymmetric loading)
Complete clearing turns before every performance maneuver—usually at least 180° change in direction, looking for traffic (Jeppesen Private Pilot pg. 4-6)
Power On Stall:
1. Exhibits knowledge of the elements related to power-on stalls.
2. Selects an entry altitude that allows the task to be completed no lower than 1,500 feet (460 meters) AGL.
3. Establishes the takeoff or departure configuration. Sets power to no less than 65 percent available power.
4. Transitions smoothly from the takeoff or departure attitude to the pitch attitude that will induce a stall.
5. Maintains a specified heading, ±10°, in straight flight; maintains a specified angle of bank not to exceed 20°, ±10°, in turning flight, while inducing the stall.
6. Recognizes and recovers promptly after the stall occurs by simultaneously reducing the angle of attack, increasing power as appropriate, and leveling the wings to return to a straight-and-level flight attitude with a minimum loss of altitude appropriate for the airplane.
7. Retracts the flaps to the recommended setting; retracts the landing gear if retractable, after a positive rate of climb is established.
8. Accelerates to Vx or Vy speed before the final flap retraction; returns to the altitude, heading, and airspeed specified by the examiner.
General: Student should be able to explain the procedures and reasons for them.
Overview: Why does an aircraft stall? What happens when it stalls? How do you prevent stalls? How do you recover from a stall?
Emphasis: Maintain positive control, initiate recovery promptly, and minimize loss of altitude.
Power on stall Procedure