Jun 28, 2013
Accident
Substantial Lake Ozark, MO
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The improper rebuild and maintenance of the helicopter and inadequate subsequent inspections, which resulted in undetected fuel contamination and a subsequent total loss of engine power during cruise flight.
NTSB CEN13LA396