BLYTHE, CA, USA
N8014L
CESSNA 172
THE AIRPLANE'S ENGINE QUIT WHILE ON THE DOWNWIND LEG. THE AIRPLANE'S ALTITUDE WAS INSUFFICIENT TO NEGOTIATE THE RUNWAY AND THE PILOT LANDED IN THE ADJACENT SOFT TERRAIN. ON TOUCHDOWN, THE NOSE WHEEL SUNK INTO THE SOFT TERRAIN AND THE AIRPLANE NOSED OVER. THE ENGINE WAS RECENTLY OVERHAULED. EXAMINATION OF THE ENGINE DISCLOSED THAT THE NOS. 2 & 4 CYLINDERS EXHIBITED NO COMPRESSION. FURTHER EXAMINATION DISCLOSED THAT THE CYLINDERS VALVES WOULD NOT FIT THEIR RESPECTIVE VALVE SEATS. THE VALVE SEATS WERE ALSO BROUND TOO DEEP.
THE IMPROPER ENGINE OVERHAUL PERFORMED BY THE MECHANIC. FACTORS RELATING TO THIS ACCIDENT WERE THE INTAKE AND EXHAUST VALVE LEAKS AND THE SOFT TERRAIN.
Source: NTSB Aviation Accident Database
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