Primary finding
Probable cause
The pilot's improper preflight and miscalculation of remaining fuel, which resulted in fuel exhaustion, and improper autorotation, due to inadequate transition/upgrade training and lack of familiarity with helicopters.
NTSB investigation record
Parker Rotorway exec90· N78435
Primary finding
The pilot's improper preflight and miscalculation of remaining fuel, which resulted in fuel exhaustion, and improper autorotation, due to inadequate transition/upgrade training and lack of familiarity with helicopters.
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