Definition 1 of 2
Definition
A vestibular illusion in which a pilot in a prolonged, constant-rate spin loses the sensation of turning. When the pilot then recovers and stops the spin, the inner ear falsely senses a spin in the opposite direction, prompting the pilot to re-enter the original spin to counter the false sensation — often with fatal results.
Plain English
If you stay in a spin long enough, your inner ear stops noticing the rotation. When you finally stop spinning, you feel like you're now spinning the other way. If you trust that feeling and 'correct' for it, you put yourself right back into the original spin.
Context Anchor
Seen in instrument flying discussions about inner-ear illusions when outside visual reference is lost, such as in cloud or darkness.
Derivation
Called 'graveyard' because pilots who trust the false sensation and re-enter the spin frequently do not survive. The name is a blunt warning, not a technical descriptor.
Why Pilots Care
Acting on the reversed sensation instead of the instruments can drive the airplane into an unrecoverable attitude or spin.
Analogy
Like the backward-spinning sensation you feel right after stepping off a playground merry-go-round.
Grounding Statement
The danger is that the pilot’s body may say “you are turning the other way” at the exact moment the instruments are showing the correct recovery.
Intuition Check
A graveyard spin is not a named maneuver to practice or a normal turn. It is a dangerous false sensation that can occur during or after spin recovery without reliable outside visual reference.
Example Sentence 1
The instructor explained that a graveyard spin can occur after a long, stable spin because the inner ear stops registering the rotation.
Example Sentence 2
The instructor demonstrated how a graveyard spin can occur after a prolonged upright spin if the pilot stops the rotation too abruptly.