NTSB Identification: CHI96LA217.
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Accident occurred Wednesday, June 26, 1996 in NESS CITY, KS
Probable Cause Approval Date: 12/16/1996
Aircraft: Air Tractor AT-301, registration: N8883S
Injuries: 1 Uninjured.

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 stated that during a swath run the engine began to vibrate. He reduced engine power, then applied power again, but the vibration continued. He elected to conduct a forced landing. During the landing the airplane encountered wet terrain and nosed over. Subsequent examination revealed that a bolt in the propeller counterweight had broken. Source of the break in the bolt was not determined.

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

the failure of a counterweight bolt in the propeller for reasons undetermined. Factors were the wet landing area and the encounter with unsuitable terrain during the forced landing.

Full narrative available

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