CRYSTAL, MN, USA
N62290
GOODYEAR FG1D
THE PLT REPORTED THAT DURING THE TAKEOFF ROLL, THERE WAS A SLIGHT LOSS OF MANIFOLD PRESSURE. THIS WAS FOLLOWED BY A LOUD 'MISFIRE', A FUTHER LOSS OF MANIFOLD PRESSURE & A DROP IN THE ENG RPM. WITH AN ESTIMATED 2000 FT OF RWY REMAINING, HE ELECT TO ABORT & USED HEAVY BRAKING ACTION IN AN ATTEMPT TO STOP BEFORE REACHING A ROADWAY. HOWEVER, THE ACFT CONTINUED OFF THE RWY, AND SUBSEQUENTLY, IT NOSED OVER. AN INVISTIGATION REVEALED THAT A SPRING, P&W PN: 153003, IN THE IMPELLER FUEL FEED VALVE ASSEMBLY WAS COMPLETELY DETERIORATED. THE ABSENCE OF SPRING TENSION ON THE AIR SIDE OF THE FUEL DIAPHRAM RESULTED IN A LOW METERED FUEL PRESSURE.
Source: NTSB Aviation Accident Database
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