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Demonstration Stalls

This lesson should establish the student’s familiarity with situations leading to (and the execution of) the more complex and dangerous stalls, while explaining the danger of near-spin conditions.

Elements

  • “advanced” stalls
    • crossed-control stalls
    • elevator trim stalls
    • secondary stalls
    • accelerated stalls
  • recovery techniques
  • avoidance

Equipment

  • model aircraft
  • whiteboard and markers
  • Airplane Flying Handbook
  • standardization manual (Arrow)

Instructor actions

Demonstrate, using the whiteboard and model aircraft, the setups, execution, and recoveries for demonstration stalls. As a guided discussion, teach and evaluate the student’s application of the maneuver to real-world situations.

Student actions

Read assignment prior to briefing, and participate in the guided discussion with responses and questions.

Completion Standards

The lesson will be complete when the student shows a working knowledge of demonstration stalls and can explain the maneuvers with minimal instructor guidance.

Plan of Action

Setups

  • 1,500/2,000, 15”
  • flaps, gear as specified (takeoff or climb)

Crossed-control stalls

  • configure: landing, zero flaps, idle
  • reduce airspeed to glide (79 knots, Arrow)
  • banked, descending turn as if to overshoot
  • excess rudder into the turn to cheat
  • opposite aileron to maintain bank
  • backpressure to maintain attitude
  • recognition and recovery – simultaneous

Elevator-trim stalls

  • reduce airspeed to 75 knots
  • trim full-aft
  • full power and a high pitch attitude, no more than 30°
  • maintain until stall
  • coordination
  • retrim following recovery

Secondary stalls

  • power-off configuration
  • induce a full stall
  • improper half-recovery
  • induce second imminent stall

Accelerated

  • zero flaps, idle
  • reduce airspeed to glide (79 knots)
  • establish a steep turn (45° or more)
  • maintain altitude with backpressure

Recovery

  • recovery (power, flaps to 25°, gear, flaps to 0°)
  • Vx or Vy prior to flap retraction
  • pitch changes with flaps
  • arrest descent, avoiding secondary
  • reaction speeds