Accident Brantly-hynes B2B N2257U, Saturday 1 May 1993

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Date:	Saturday 1 May 1993
Time:	15:57 LT
Type:	Brantly-hynes B2B
Owner/operator:	Private
Registration:	N2257U
MSN:	418
Total airframe hrs:	718 hours
Engine model:	Lycoming VIO-360
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Greencastle, IN - United States of America
Phase:	En route
Nature:	Private
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PILOT REPORTED THAT THE ENGINE MISSED SEVERAL TIMES & THEN QUIT COMPLETELY. HE MADE AN AUTOROTATION TO A FIELD; THE HELICOPTER LANDED HARD & ROLLED OVER. INSPECTION DISCLOSED EXTENSIVE CONTAMINATION OF THE FUEL SYSTEM WITH SAND-LIKE PARTICULATE MATTER. ONCE THE SYSTEM WAS CLEANED, THE ENGINE STARTED AND RAN NORMALLY. THE SOURCE OF THE PARTICULATE MATTER WAS NOT DETERMINED.

Probable Cause: CONTAMINATION OF THE FUEL SYSTEM BY PARTICULATE MATTER OF AN UNKNOWN ORIGIN.

Accident investigation: