Page 464 - PPL-engelsk 2025
P. 464
Principles of flight
The speedometer shows an IAS for stall. This can differ from TAS for stall due to
the air speed indicator’s error from the high nose attitude.
Aircraft can also stall with full power and at a higher nose attitude with a lower
air speed indication.
Remember, the aircraft can stall at any speed and in any flight attitude!
The aircraft’s minimum stall speed with and without flaps can be found in the
aircraft manual.
It is based on:
- Minimum stall speed
- MSL on a standard day
- Level flight
- Engine at idle at MTOW
- It may be specified with different center of gravity positions – if not, it will
be specified with the center of gravity in the forward allowable position,
where the stall speed is highest.
- It will be noted whether it is with or without flaps
Changes in any of the above factors will affect the stall speed.
In addition, the stall speed increases with:
- Bank angle
- G-forces
- Center of gravity too far forward
- Recovery from a dive
It is important to know your aircraft well, including its behavior near the stall
boundary, and its behavior during a stall. Train it at a safe altitude on a good day.
Take an instructor with you!
Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 464
