Primary finding
Probable cause
an undetermined failure of the oil system (lines or filter), while hovering, which resulted in an engine compartment fire that erupted and subsequently destroyed the helicopter after it was landed.
NTSB investigation record
Fronsman Rotorway exec· N6323F
Primary finding
an undetermined failure of the oil system (lines or filter), while hovering, which resulted in an engine compartment fire that erupted and subsequently destroyed the helicopter after it was landed.
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