Page 471 - PPL-engelsk 2025
P. 471
Principles of flight
5.4.3 Spin
A spin is when the aircraft rotates about a vertical axis in a movement towards
the ground.
A typical situation is shown here.
A dangerous situation arises - could be the situation here.
The wing is stalled.
With crossed rudders, the pilot tries to straighten out with the
aileron in a curving, tight turn.
A rotation around a spin axis passes through the
center of gravity
Attempting to recover with the aileron = risk of
deepening the stall and ending in a spin.
An airplane – a Cessna 150, has a very special way of going into a spin. If you stall
in a turn with 15° bank and 15° flaps and an engine speed of 1500 Rpm, the
airplane can end up going into a spin to the opposite side of the turn.
Very unpleasant, and that is why spin tests are performed on all new airplanes
before they can be approved.
During training, you will have the opportunity to do spins in our Cessna 172s.
They are almost impossible to spin. But at 1500 Rpm and to the left it is possible.
Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 471
