【PPL】Power off Stall




FAA-H-8083-2, FAA-H-8083-3; AC 61-67; POH/AFM



To determine that the applicant exhibits satisfactory knowledge, risk management, and skills associated with power-off stalls.




PA.VII.B.K1 Aerodynamics associated with stalls in various airplane configurations, to include the relationship between angle of attack, airspeed, load factor, power setting, airplane weight and center of gravity, airplane attitude, and yaw effects

PA.VII.B.K2 Stall characteristics (i.e., airplane design) and impending stall and full stall indications (i.e., how to recognize by sight, sound, or feel). 

PA.VII.B.K3 Factors and situations that can lead to a power-off stall and actions that can be taken to prevent it

PA.VII.B.K4 Fundamentals of stall recovery.


リスクマネージメント:Risk Management

PA.VII.B.R1 Factors and situations that could lead to an inadvertent power-off stall, spin, and loss of control

PA.VII.B.R2 Range and limitations of stall warning indicators (e.g., airplane buffet, stall horn, etc.). 

PA.VII.B.R3 Failure to recognize and recover at the stall warning during normal operations. 

PA.VII.B.R4 Improper stall recovery procedure

PA.VII.B.R5 Secondary stalls, accelerated stalls, and cross-control stalls

PA.VII.B.R6 Effect of environmental elements on airplane performance related to power-off stalls (e.g., turbulence, microbursts, and high-density altitude). 

PA.VII.B.R7 Collision hazards, to include aircraft, terrain, obstacles, and wires. 

PA.VII.B.R8 Distractions, improper task management, loss of situational awareness, or disorientation.


PA.VII.B.S1 Clear the area. (クリアリングターンにて確認)

PA.VII.B.S2 Select an entry altitude that will allow the Task to be completed no lower than 1,500 feet AGL (ASEL, ASES) or 3,000 feet AGL (AMEL, AMES). 

PA.VII.B.S3 Configure the airplane in the approach or landing configuration, as specified by the evaluator, and maintain coordinated flight throughout the maneuver. 

PA.VII.B.S4 Establish a stabilized descent

PA.VII.B.S5 Transition smoothly from the approach or landing attitude to a pitch attitude that will induce a stall. 

PA.VII.B.S6 Maintain a specified heading ±10° if in straight flight; maintain a specified angle of bank not to exceed 20°, ±10° if in turning flight, while inducing the stall. 

PA.VII.B.S7 Acknowledge cues of the impending stall and then recover promptly after a full stall occurs. 

PA.VII.B.S8 Execute a stall recovery in accordance with procedures set forth in the POH/AFM. 

PA.VII.B.S9 Configure the airplane as recommended by the manufacturer, and accelerate to VX or VY. 

PA.VII.B.S10 Return to the altitude, heading, and airspeed specified by the evaluator.

※Check ride時に特に見られる点として、手順や安全管理も勿論ですが、ストール時にHeadingが10度以上ずれていないかも厳しく見られます。また、機首上げ20度以上でストールを起こすと、その後危険な状況に陥りやすいのでお気をつけを。 急激な姿勢変化でより危険なSecond stallに陥る場合があります。



  1. 準備
    1. 空域の安全確認 →クリアリング ターン
    2. (準備)地上目標の設定 →左右のブレを防ぐため
    3. ※Stallは風上に向かって行います。
  2. 開始
    1. Reduce power(約1,500RPM)→着陸前の減速と同じ
    2. Flap10°(110KT以下) →C172Rの場合
    3. Flap20°(White arc)
    4. Flap30°(White arc)
    5. Flap30°にてFinal approach speedにて100FT 下降
    6. 下降後、E/Gアイドル&Pitch up を同時に行う
    7. Stall状態になった際には”Stall call”をする
  3. リカバリー
    1. Pull powerと同時に、Stallした翼の反対側のラダーを踏む。エルロンは使用しない(例、左側が下がっていれば右ラダー。別の言い方だと、翼が高い方を踏む)
    2. 機首を水平線より下がりすぎないように意識し、開始高度まで上昇
    3. Flapを30°から20°へ →Go aroundの手順と同じ
    4. ヨークへのバックプレッシャーが強くなってきたら20°から10°へ。10°からUpまでも同様。※Airspeed&Heading 注意



  • 失速時の左右の傾きはラダーで修正すること
  • 失速直後、ラダー不足をエルロンで補う操作をしないこと
  • リカバリー時、フルパワーは機首が水平線より下がるまでしないこと





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