AI.X.BFAA-S-ACS-25 · Nov 2023
Demonstration of Flight Characteristics at Various Configurations and Airspeeds (ASEL and
To determine the applicant understands flight characteristics and power required at different airspeeds and configurations appropriate to the make and model of airplane flown, 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
Slow flight may be conducted in straight-and-level flight, turns, climbs, or descents, and in the clean configuration, landing configuration, or at any other combination of landing gear and flaps. The target slow flight speed is an airspeed just above the stall warning in the desired configuration, approximately 5–10 knots above the stall speed for that flight condition. The manufacturer's recommended procedures, including airplane configuration and airspeeds, are contained in the FAA-approved AFM/POH for that airplane.
FAA references
- AFH ch. 13 (p. 13-18) — FAA-H-8083-3C
- AFH ch. 5, Performing the Slow Flight Maneuver (p. 5-11) — FAA-H-8083-3C
- AFH ch. 9 (p. 9-1) — FAA-H-8083-3C
- PHAK ch. 11 (p. 11-11) — FAA-H-8083-25C (2023)
- AFH ch. 5, Slow Flight (p. 5-10) — FAA-H-8083-3C
Knowledge
- AI.X.B.K1: Purpose of and procedures for demonstration of flight characteristics at various configurations and airspeeds.
- AI.X.B.K2: Power required at various airspeeds between cruise airspeed and critically slow airspeeds near the critical angle of attack.
- AI.X.B.K3: The minimum power required speed and its role in differentiating the region of normal command and the region of reversed command on the powe
- AI.X.B.K4: The relationships between lift, drag, angle of attack, airspeed, load factor, power required, weight, center of gravity, attitude, yaw effec
- AI.X.B.K5: Pitch, power, and trim control inputs that are required to operate the airplane in level flight, turns, climbs, and descents and how the con
- AI.X.B.K6: Flight characteristics and aerodynamics associated with configuration changes applicable to the specific to the make and model of airplane p
- AI.X.B.K7: Airspeeds specific to the airplane for various operations, how to identify them on the airspeed indicator (if applicable), and their signifi
- AI.X.B.K7a: a. Design/operating maneuvering speed
- AI.X.B.K7b: b. Landing gear extended/operating speed, if applicable
- AI.X.B.K7c: c. Flaps extended/operating speed, if applicable
- AI.X.B.K7d: d. Best glide speed
- AI.X.B.K7e: e. Reference landing speed
- AI.X.B.K7f: f. Stalling speeds
- AI.X.B.K8: Common errors related to this Task.
Risk management
- AI.X.B.R1: Lack of familiarity with airplane airspeed limitations and interpretation of the airspeed indicator.
- AI.X.B.R2: Exceeding airspeed limitations.
- AI.X.B.R3: Flight characteristics in the region of reversed command and the potential for loss of control.
- AI.X.B.R4: Inadvertent exceedance of the critical angle of attack.
- AI.X.B.R5: Range, limitations, and operational characteristics of airspeed indicators and stall warning indicators (e.g., airplane buffet, stall horn,
- AI.X.B.R6: Unacknowledged stall warning indications.
- AI.X.B.R7: Effects of environmental elements on airplane performance and controllability. (e.g., turbulence, microbursts, and high density altitude).
- AI.X.B.R8: Collision hazards.
- AI.X.B.R9: Maneuvering at critically slow airspeeds.
Skills
- AI.X.B.S1: Conduct and explain the procedure, manage the associated risk, and fly the airplane, while maintaining altitude ±100 feet, airspeed +5/-0 kn
- AI.X.B.S2: Select an altitude that allows the maneuver to be performed no lower than 1,500 feet above ground level (AGL).
- AI.X.B.S3: Clear the area.
- AI.X.B.S4: Clean configuration demonstration:
- AI.X.B.S4a: a. Establish and maintain design/operating maneuvering speed appropriate to the airplane’s weight while describing pitch, power, and trim in
- AI.X.B.S4b: b. With gear and flaps retracted (as applicable), slow the airplane to, and maintain, best glide speed (or as specified by evaluator), notin
- AI.X.B.S4c: c. Continue to slow the airplane to, and maintain, an airspeed at which any further increase in angle of attack, increase in load factor, or
- AI.X.B.S4d: d. Verbally acknowledging stall warning indications, then;
- AI.X.B.S4e: e. Without changing power setting, lower the pitch attitude and accelerate to a faster airspeed until reestablishing the airplane in level f
- AI.X.B.S4f: f. Return to normal cruise flight at the altitude and heading specified by the evaluator
- AI.X.B.S5: Landing configuration demonstration.
- AI.X.B.S5a: a. Establish and maintain design/operating maneuvering speed appropriate to the airplane’s weight while describing pitch, power, and trim in
- AI.X.B.S5b: b. Slow the airplane to, and maintain, the appropriate limiting airspeeds and fully extend the landing gear and flaps (as appropriate), then
- AI.X.B.S5c: c. With gear and flaps fully extended (as applicable), slow the airplane to, and maintain, reference landing speed (or as specified by the e
- AI.X.B.S5d: d. With gear and flaps fully extended, continue to slow the airplane to, and maintain, an airspeed at which any further increase in angle of
- AI.X.B.S5e: e. Verbally acknowledging stall warning indications, then;
- AI.X.B.S5f: f. Without changing power setting, lower the pitch attitude and accelerate to a faster airspeed until reestablishing the airplane in in leve
- AI.X.B.S5g: g. Return to normal cruise flight at the altitude and heading specified by the evaluator
- AI.X.B.S6: Analyze and correct common errors related to this Task.
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