Accident Bellanca 7GCBC N57659, Sunday 13 December 1992

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Date:	Sunday 13 December 1992
Time:	18:30 LT
Type:	Bellanca 7GCBC
Owner/operator:	Private
Registration:	N57659
MSN:	624-74
Year of manufacture:	1973
Engine model:	Lycoming O-320-B
Fatalities:	Fatalities: 0 / Occupants: 3
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Arco, ID - United States of America
Phase:	En route
Nature:	Private
Departure airport:	Idaho Falls, ID (KIDA)
Destination airport:	Nampa, ID (S67)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PILOT OF THE BELLANCA 7GCBC MADE A SUCCESSFUL TOUCHDOWN ON A SNOW COVERED DIRT ROAD AFTER LOSING A SUBSTANTIAL AMOUNT OF OIL FROM A LEAKING CRANKSHAFT OIL SEAL. DURING THE LANDING ROLL, THE AIRCRAFT NOSED OVER WHEN IT ENCOUNTERED SNOW APPROXIMATELY ONE FOOT DEEP.

Probable Cause: A LEAKING CRANKSHAFT OIL SEAL, AND SNOW ON THE LANDING AREA.

Accident investigation: