Accident Piper PA-46-310P Malibu N9094Z, Wednesday 7 August 1991

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Date:	Wednesday 7 August 1991
Time:	16:15 LT
Type:	Piper PA-46-310P Malibu
Owner/operator:	Angel Marketing & Advertising
Registration:	N9094Z
MSN:	4608022
Total airframe hrs:	1633 hours
Engine model:	Continental TSIO-52O-BE1B
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Cartersville, GA - United States of America
Phase:	En route
Nature:	Executive
Departure airport:	Chamblee, GA (KPDK)
Destination airport:	Chatanooga, TN (CHA
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DURING THE CLIMB TO CRUISE FLIGHT THE FUEL FLOW DECREASED, CYLINDER HEAD TEMPERATURE & OIL TEMPERATURE INCREASED, & AN ODOR OF OVERHEATING WAS DETECTED. WHEN THE ENGINE SPUTTERED, THE FUEL PUMP WAS ENGAGED & THE ENGINE QUIT. A FORCED LANDING WAS MADE IN A PASTURE, WHERE THE GEAR COLLAPSED DURING THE LANDING ROLL. EVIDENCE OF A FIRE WAS FOUND WHICH RESULTED FROM A LEAK AT THE MAIN FUEL LINE B-NUT IN THE ENGINE COMPARTMENT. INVESTIGATION REVEALED THAT THE B-NUT HAD BEEN LOOSENED, & NOT REPLACED TIGHTLY, DURING REPLACEMENT OF THE STANDBY VACUUM PUMP. THE QC INSPECTOR WHO EXAMINED THE REPAIR DID NOT EXAMINE THE AREA SURROUNDING THE REPLACED STANDBY VACUUM PUMP.

Probable Cause: THE MECHANIC'S IMPROPER REPLACEMENT OF THE FUEL LINE B-NUT, AND THE INADEQUATE INSPECTION OF THE REPAIR WORK BY THE QUALITY ASSURANCE INSPECTOR.

Accident investigation: