https://www.skybrary.aero/articles/somatogravic-and-somatogyral-illusions
https://www.skybrary.aero/video/sensory-illusions-skyclip
extraits
Defences
- Be aware of this risk when operating in conditions where there is insufficient visual reference to assure safe flight entirely by reference to external visual cues.
- Control the aircraft flight path by reference to the flight instruments whenever external visual cues are less than that required to fly by such external reference.
- Anticipate the possibility of a pitch up illusion when acceleration occurs and a pitch down illusion when deceleration occurs. Remember than banking and angular acceleration increase the effects of any illusions.
- At the first sign of any irrational flight control inputs by the other pilot, take control, especially if near the ground or where a sustained climb is essential for terrain safety.
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