Page 469 - PPL-engelsk 2025

Principles of flight

Recovery from Stall in Special Situations:

- Stall during climb:

Due to slipstream effects, the wing does not stall at the root but further out

on the wing. This can lead to wing separation due to poor aileron response.

Ensure the wings are level through coordinated flight and lower the nose.

- Stall in level flight:

Even if the aircraft's attitude is level, the direction of motion can cause a

stall in an otherwise safe flight attitude.
Ensure the wings are level through coordinated flight and lower the nose.

- Stall in a turn:

Lower the nose and use the rudder to level the wings – do not use the

ailerons.

- Stall in descent and turn (e.g., during final turn):

Lower the nose (even though instinct may suggest raising the nose), correct

the flight with rudder, and apply full throttle.

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5.4.2 Wing design to counteract stall

If a stall is allowed to develop, it can result in the aircraft going into a spin.
Therefore, much is done to reduce the risk of the aircraft stalling unintentionally.

Wings are designed to stall at the root (fuselage) first. This is done to preserve

the effect of the ailerons and thereby prevent the aircraft from ‘losing a wing’

and going into a spin.

Methods to ensure that the wing stalls at the fuselage first can be:

- aerodynamic twist
- geometric twist

- stall strips

Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 469