Human Factors
Spatial Disorientation & Vestibular Illusion Traps
FAA Ref: FAA-S-ACS-6C Area I Task H (Human Factors)
Scenario & Physics Summary
The Graveyard Spin, Coriolis Illusion, Leans, and Somatogravic sensory mismatch breakdown.
Interactive 3D Visual Plates & Scenario Media
Plate 1: Spatial Disorientation & Vestibular Illusion Traps
Plate 2: Spatial Disorientation & Vestibular Illusion Traps
Plate 3: Spatial Disorientation & Vestibular Illusion Traps
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.
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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