FORT PIERCE, FL, USA
N7316L
AIR TRACTOR AT-401
THE AGRICULTURAL FLIGHT HAD DEPARTED THE AIRSTRIP AND WAS EN ROUTE TO SPRAY A FIELD WHEN THE ENGINE BEGAN TO RUN ROUGH, SMOKE, AND LOSE POWER. THE PILOT ATTEMPTED TO RETURN TO THE AIRSTRIP BUT THE ENGINE DID NOT PRODUCE ADEQUATE POWER. HE INITIATED A FORCED LANDING TO A DRAINAGE DITCH. DURING THE LANDING THE AIRPLANE HIT A SPRINKLER SYSTEM AND BURST INTO FLAMES. THE NO. 2 CYLINDER WAS FOUND TO BE CRACKED ACROSS THE DOME FROM SPARKPLUG HOLE TO SPARKPLUG HOLE. NO RECORDS WERE FOUND TO DETERMINE THE SERVICE HISTORY OF THE CYLINDER.
FAILURE OF THE NO. 2 CYLINDER IN FATIGUE FOR UNDETERMINED REASONS, OVER UNSUITABLE TERRAIN. THE LACK OF SUITALE TERRAIN FOR THE FORCED LANDING WAS A FACTOR.
Source: NTSB Aviation Accident Database
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