RIO VISTA, CA, USA
N97115
STINSON 108-1
THE AIRCRAFT NOSED OVER IN SOFT SOIL AFTER A FORCED LANDING. THE AIRCRAFT'S ENGINE FAILED DURING THE DEPARTURE CLIMB AND THE PILOT WAS UNABLE TO RESTART IT. THE PILOT ACCOMPLISHED A FORCED LANDING TO A FIELD. THE AIRCRAFT NOSED OVER WHEN THE NOSE GEAR BECAME BOGGED IN SOFT SOIL. THE POWERPLANT WAS DISASSEMBLED AND EXAMINED. DURING THE DISASSEMBLY THE CRANKSHAFT WAS DISCOVERED TO BE FRACTURED BETWEEN THE NUMBER ONE AND TWO CYLINDER JOURNALS. EXAMINATION OF THE AIRCRAFT AIRFRAME AND ENGINE LOGBOOKS REVEALED THAT THE CRANKSHAFT WAS INSTALLED ON MARCH 28, 1984 WHEN THE ENGINE WAS OVERHAULED. THE AIRCRAFT HAD ACCUMULATED A TOTAL OF 54 FLIGHT HOURS SINCE THE ENGINE OVERHAUL. IT COULD NOT BE DETERMINED IF THE CRANKSHAFT WAS NEW OR RECONDITIONED AT THE TIME OF INSTALLATION.
Source: NTSB Aviation Accident Database
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