Jul 31, 2009
Accident
Destroyed Ravenswood, WV
Injuries1 fatal
Phase of Flight-
ConditionsIMC
OperationFAR 091
Probable Cause
The pilot's improper modification of the certified, on-board oxygen system, which resulted in incapacitation due to hypoxia, and the airplane's subsequent uncontrolled descent into terrain.
NTSB ERA09FA429