Demonstration Stalls

Published 26 October 2006

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