Flight Instructor Airplane · Area X: Slow flight, Stalls, and Spins

Task E. Accelerated Stalls

FAA-S-ACS-25 · Effective 2024-05-31

Knowledge

What you should understand and be able to explain.

6 elements
  • AI.X.E.K1
    Purpose of and procedures for accelerated stalls.
  • AI.X.E.K2
    Aerodynamics associated with accelerated stalls in various airplane configurations, including the relationship between angle of attack, airspeed, load factor, power setting, airplane weight and center of gravity, airplane attitude, and yaw effects.
  • AI.X.E.K3
    Stall characteristics as they relate to airplane design, and recognition impending stall and full stall indications using sight, sound, or feel.
  • AI.X.E.K4
    Factors leading to an accelerated stall and preventive actions.
  • AI.X.E.K5
    Fundamentals of stall recovery.
  • AI.X.E.K6
    Common errors related to this Task.

Risk management

Risks to recognize and decisions to consider.

8 elements
  • AI.X.E.R1
    Factors and situations that could lead to an inadvertent accelerated stall, spin, and loss of control.
  • AI.X.E.R2
    Range and limitations of stall warning indicators (e.g., aircraft buffet, stall horn, etc.).
  • AI.X.E.R3
    Stall warning(s) during normal operations.
  • AI.X.E.R4
    Stall recovery procedure.
  • AI.X.E.R5
    Secondary stalls, cross-control stalls, and spins.
  • AI.X.E.R6
    Effect of environmental elements on airplane performance related to accelerated stalls (e.g., turbulence, microbursts, and high-density altitude).
  • AI.X.E.R7
    Collision hazards.
  • AI.X.E.R8
    Distractions, task prioritization, loss of situational awareness, or disorientation.
Skill elements and task objectives

This page covers knowledge and risk management. For the complete task, including skill standards, open the FAA document (PDF).