AI.X.HFAA-S-ACS-25 · Nov 2023
Secondary Stall Demonstration (ASEL, ASES)
To determine the applicant understands secondary stalls, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction. Note: See Appendix 2: Safety of Flight and Appendix 3: Aircraft, Equipment, and Operational Requirements & Limitations for information related to this Task.
Bottom line
During the pull up following stall recovery, significant load factors are sometimes induced. As a generalization, a recovery from a stall made by diving only to cruising or design maneuvering airspeed, with a gradual pull up as soon as the airspeed is safely above stalling, can be effected with a load factor not to exceed 2 or 2.5 Gs.
FAA references
- PHAK ch. 5 (p. 5-36) — FAA-H-8083-25C (2023)
Knowledge
Risk management
- AI.X.H.R1: Stall recovery procedure.
- AI.X.H.R2: Effect of environmental elements on airplane performance related to cross-controlled stalls (e.g., turbulence, microbursts, and high-density
- AI.X.H.R3: Collision hazards.
- AI.X.H.R4: Aircraft limitations.
- AI.X.H.R5: Distractions, task prioritization, loss of situational awareness, or disorientation.
Skills
- AI.X.H.S1: Clear the area.
- AI.X.H.S2: Select an entry altitude that allows the Task to be completed no lower than 3,000 feet above ground level (AGL).
- AI.X.H.S3: Enter a stall in a specified configuration and exceed the critical angle of attach a second time during the recovery.
- AI.X.H.S4: Recover promptly and appropriately after a secondary stall occurs.
- AI.X.H.S5: Describe and demonstrate conditions that lead to a secondary stall for future avoidance.
- AI.X.H.S6: Analyze and correct common errors related to this Task.
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