Human Factors · MET

Spatial Disorientation & Vestibular Illusion Traps

CASA Ref: CASR Part 61 MOS Schedule 3 CHFC 2.1 · FAA Ref: FAA-S-ACS-6C Area I Task E (Aeromedical Factors)

Scenario & Physics Summary

The Graveyard Spin, Coriolis Illusion, Leans, and Somatogravic sensory mismatch breakdown.

Interactive 3D Visual Plates & Scenario Media

Spatial Disorientation & Vestibular Illusion Traps Plate 1

Plate 1: Spatial Disorientation & Vestibular Illusion Traps

Spatial Disorientation & Vestibular Illusion Traps Plate 2

Plate 2: Spatial Disorientation & Vestibular Illusion Traps

Spatial Disorientation & Vestibular Illusion Traps Plate 3

Plate 3: Spatial Disorientation & Vestibular Illusion Traps

Spatial Disorientation & Vestibular Illusion Traps Plate 4

Plate 4: Spatial Disorientation & Vestibular Illusion Traps

Aerodynamic & Operational Physics

Vestibular semicircular canals sense angular acceleration. After 15-20 seconds of constant-rate turn, fluid friction catches up, sensing ZERO turn.
Returning to wings level creates false sensation of turning in opposite direction ("The Leans").
Correction: Disregard body sensations completely. Scan and trust flight instrument attitude indicator.

CASA & FAA Exam Gotcha Alert

Exam Trap: Never rely on body "seat of pants" sensations in IMC or darkness. Sensory illusions affect 100% of humans without visual reference.

Frequently Asked Questions & Exam Explanations

How long does it take for inner ear canals to stop sensing a constant rate turn?

Approximately 15 to 20 seconds of continuous turn.

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