CARTERSVILLE, GA, USA
N9094Z
PIPER PA-46-310P
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.
THE MECHANIC'S IMPROPER REPLACEMENT OF THE FUEL LINE B-NUT, AND THE INADEQUATE INSPECTION OF THE REPAIR WORK BY THE QUALITY ASSURANCE INSPECTOR.
Source: NTSB Aviation Accident Database
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