• Sources

Purpose of Power Off Stalls

• Train pilots to recognize potential accidental stalls during approach and landing.
• Train pilots to recover from stalls and prevent accidental spin entries
• To learn to retain or regain full control of the airplane when near a stall and recognizing a stall is likely going to occur while taking appropriate actions.

Common Myths

Myth

“If the airplane gets too slow, the airplane will stall.”

Fact

<aside> 💡 Stalls only occur when a wing reaches its critical angle of attack

</aside>

Myth

“When the stall horn comes on the airplane is stalled”

Fact

<aside> 💡

The stall horn only tells you of an imminent stall.

-Full stall is when the wing is at or exceeded the critical AOA -Imminent stalls is when the wing has not fully exceeded the critical AOA

</aside>

• All stalls are recovered the same way
  • By lowering the AOA below the Critical AOA
• Think about what a glider must do to recover from a stall?

Lesson

https://www.youtube.com/watch?v=gOaX8Qv-lgk

Common Errors

1. Failure to adequately clear the area.

2. Over-reliance on the airspeed indicator and slip-skid indicator while excluding other cues after recovery.

3. Inability to recognize an impending stall condition.

4. Failure to take timely action to prevent a full stall during the conduct of impending stalls.

5. Failure to maintain proper coordination with the rudder throughout the stall and recovery.

6. Recovering before reaching the critical AOA when practicing the full stall maneuver.

7. Recovery is attempted without recognizing the importance of pitch control and AOA.

8. Pilot attempts to recover with power before reducing AOA.

9. Inadvertent secondary stall during recovery.

10. Excessive forward-elevator pressure during recovery resulting in low or negative G load.

11. Excessive airspeed buildup during recovery

Procedure

Initial Configuration  Altitude ................................................> 1,500 Feet AGL  Power ..................................................≈ 2,200 RPM  Airspeed ..............................................≈100 MPH

1. Clear the area and pick a reference point to maintain heading
   1. 3 C’s (clearing turns, call, configure)
2. Reduce throttle to 1500 RPM
3. Add flaps
   1. “Below 110 flaps 10”
   2. Below 85 flaps full”
4. Lower the nose to “approach pitch”
   1. “6-7 fingers below the horizon”
   2. Reaching 65 kts trim
5. Call out the altitude you will stall at
   1. (100-200 feet below current altitude)
   2. This simulates the ground
6. Approaching the altitude, pull power and throttle back
   1. Smoothly raise nose 2-3 fingers above horizon
7. Call out the stall horn
8. Call out the buffet
   1. ACS states you must identify imminent/full stalls and their characteristics
9. Initiate the recovery at the full or imminent stall as specified

Recovery

1. Reduce pitch below critical AOA
   1. 3-4 fingers below the horizon
2. Apply full power, use rudder to stop any yaw
   1. No yaw no spin
3. Roll wings level (if required) with coordinated use of aileron and rudder
4. Raise the pitch to VY
   1. (0-1 fingers above the horizon / 75 kts)
   2. We just lost a lot of altitude get away from the “ground”
5. Climb to altitude and heading as specified
6. When airspeed reaches 90 kts, set practice area power (2200 RPM)

Videos

https://www.youtube.com/watch?v=HwbNBLuYdXc

https://www.youtube.com/watch?v=1Wujygv0pmY