PAVO, GA, USA
N8770S
AIR TRACTOR AT-301
THE NO. 2 EXHAUST VALVE FAILED WHILE THE PILOT WAS MANEUVERING DURING A SPRAYING OPERATION. HE COMPLETED AN EMERGENCY LANDING TO A ROAD AND COLLIDED WITH A ROAD SIGN DURING THE ROLL OUT. REPORTEDLY, THE ENGINE WAS APPROXIMATELY 1100 HOURS OUT OF THE LAST OVERHAUL; THE ENGINE'S TOTAL TIME WAS NOT AVAILABLE. THE FAILURE MODE WAS NOT DETERMINED.
THE FAILURE OF THE NO. 2 EXHAUST VALVE AND CYLINDER HEAD, WHICH RESULTED IN A TOTAL LOSS OF ENGINE POWER. A FACTOR IN THE ACCIDENT WAS THE COLLISION WITH A ROAD SIGN DURING THE FORCED LANDING.
Source: NTSB Aviation Accident Database
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