Private Pilot Flight Training and Instruction Flight Training Article Library | Back To 4VFR.COM Spatial Disorientation Spatial disorientation is the No. 1 cause of military fatal accidents. Even the best pilot will become disoriented under the right conditions. Effects on inner ear can cause a mentally and physical compelling move in a given direction. This can be the after effect of a gradual turn, spiral, spin, acceleration, leveling off, updraft, false horizon, autokinesis, (lights that move), runway illusions. Written by Gene Whitt Flight Training Article Library | Back To 4VFR.COM