Human-factors

Vestibular Illusion

Definition

False sensations of motion or attitude caused by fluid dynamics in the inner ear semicircular canals. The leans, graveyard spiral, and somatogravic illusions are common vestibular hazards in instrument flight.

Related Terms

Spatial Disorientation

The inability to correctly determine aircraft attitude or motion relative to the...

The Leans

A vestibular illusion where a pilot perceives straight-and-level flight as a ban...

Graveyard Spiral

A deadly vestibular illusion where a pilot in a gradual bank does not sense the ...

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