NTSB Identification: MIA91LA219.
The docket is stored on NTSB microfiche number 44768.
Accident occurred Monday, September 16, 1991 in SUMNER, MS
Probable Cause Approval Date: 03/31/1993
Aircraft: AIR TRACTOR AT-401, registration: N1004W
Injuries: 1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PILOT WAS IN CRUISE FLIGHT AT 500 FEET AGL WHEN THE ENGINE BEGAN TO RUN ROUGH AND QUIT. AN EMERGENCY LANDING WAS CONDUCTED TO A DIRT ROAD IN A COTTON FIELD. DURING THE LANDING ROLL THE AIRPLANE COLLIDED WITH AN ON GROUND OBJECT (TALL COTTON) AND SUSTAINED SUBSTANTIAL DAMAGE. THE PILOT RECEIVED MINOR INJURIES. VISUAL INSPECTION OF THE ENGINE ASSEMBLY REVEALED THE NO. 1 CYLINDER HAD SPLIT FROM THE EXHAUST PORT TO THE FRONT SPARK PLUG HOLE.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FAILURE OF THE NO. 1 CYLINDER ASSEMBLY.

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