Accident Grumman American AA-1B N9601L, Saturday 14 May 1988

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Date:	Saturday 14 May 1988
Time:	19:26 LT
Type:	Grumman American AA-1B
Owner/operator:	Trans Bay Airways Corporation
Registration:	N9601L
MSN:	AA1B0183
Total airframe hrs:	2134 hours
Engine model:	Lycoming O-320
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	San Carlos, CA - United States of America
Phase:	Approach
Nature:	Unknown
Departure airport:	(KSQL)
Destination airport:	(KSQL)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DURING A POST MAINTENANCE TEST FLIGHT PRIOR TO SIGN OFF OF AN ANNUAL INSPECTION, THE ENGINE QUIT AND THE PILOT PERFORMED A FORCED LANDING IN A MUD FIELD COLLIDING WITH A DIKE. EXAMINATION OF THE ENGINE REVEALED THAT A FUEL PRESSURE LINE HAD DISCONNECTED FROM A 'T' FITTING AT THE CARBURETOR CAUSING FUEL STARVATION. EXAMINATION OF THE RECORDS AT THE MAINTENANCE FACILITY REVEALED THAT THE FUEL LINE HAD BEEN REPLACED DURING THE ANNUAL INSPECTION.

Probable Cause:

Accident investigation: