Cross-Controlled Stall Demonstration (ASEL, ASES)
To determine the applicant understands cross-controlled 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
A cross-control stall occurs when the critical AOA is exceeded with aileron pressure applied in one direction and rudder pressure in the opposite direction, causing uncoordinated flight. The objective of the cross-control stall demonstration is to show the effects of uncoordinated flight on stall behavior and to emphasize the importance of maintaining coordinated flight while making turns.
FAA references
- AFH ch. 5, Cross-Control Stall (p. 5-20) — FAA-H-8083-3C
Knowledge
- AI.X.F.K1: Aerodynamics of cross-controlled stalls.
- AI.X.F.K2: Flight situations where unintentional cross-controlled stalls may occur.
- AI.X.F.K3: Recognition of cross-controlled stalls.
- AI.X.F.K4: Entry procedure and minimum entry altitude.
- AI.X.F.K5: Recovery procedure.
- AI.X.F.K6: Common errors related to this Task.
Risk management
- AI.X.F.R1: Stall recovery procedure.
- AI.X.F.R2: Effect of environmental elements on airplane performance related to cross-controlled stalls (e.g., turbulence, microbursts, and high-density
- AI.X.F.R3: Collision hazards.
- AI.X.F.R4: Aircraft limitations.
- AI.X.F.R5: Distractions, task prioritization, loss of situational awareness, or disorientation.
Skills
- AI.X.F.S1: Clear the area.
- AI.X.F.S2: Select an entry altitude that allows the Task to be completed no lower than 3,000 feet above ground level (AGL).
- AI.X.F.S3: Configure the airplane (with gear down) and close the throttle.
- AI.X.F.S4: Establish a normal glide airspeed and trim the airplane.
- AI.X.F.S5: Roll into a medium-banked turn, apply excess rudder in the turn while holding bank constant with opposite aileron input, and add elevator pr
- AI.X.F.S6: Acknowledge the cues at the first indication of a stall (e.g., aircraft buffet, stall horn, etc.).
- AI.X.F.S7: Recover at the first indication of a stall or after a full stall has occurred, as specified by the evaluator.
- AI.X.F.S8: Describe and demonstrate conditions that lead to a cross-controlled stall for future avoidance.
- AI.X.F.S9: Analyze and correct common errors related to this Task.
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