JASPER, TN, USA
N8005C
PIPER PA-22
DURING CRUISE FLIGHT THE PILOT HEARD A BANG, FOLLOWED BY A LOSS OF ENGINE POWER. THE AIRPLANE WAS BEING FLOWN OVER DENSELY WOODED, MOUNTAINOUS TERRAIN. A FORCED LANDING WAS MADE TO A LOGGED CLEARING, WHICH RESULTED IN A NOSE OVER WHEN THE NOSE WHEEL CONTACTED A CUT LOG. A SUBSEQUENT EXAMINATION OF THE ENGINE REVEALED THAT THE NUMBER 2 CYLINDER EXHAUST VALVE HAD BECOME STUCK IN THE OPEN POSITION. THE CYLINDER & PISTON EXHIBITED EXTREME IMPACT DAMAGE FROM THE FRACTURED VALVE.
THE FRACTURED VALVE WHICH RESULTED IN A TOTAL LOSS OF ENGINE POWER, WHILE FLYING OVER TERRAIN THAT WAS NOT SUITABLE FOR A FORCED LANDING. A FACTOR WAS THE DENSELY WOODED, MOUNTAINOUS TERRAIN.
Source: NTSB Aviation Accident Database
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