NTSB Identification: WPR11CA128
14 CFR Part 137: Agricultural
Accident occurred Saturday, February 05, 2011 in Buttonwillow, CA
Probable Cause Approval Date: 06/08/2011
Aircraft: SCHWEIZER G-164B, registration: N6725K
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot stated that he was making a low aerial application pass over a field, dispensing smoke to determine wind direction and velocity. The airplane struck a 20-foot-high irrigation vent pipe, which was located in the field that he was working. He proceeded straight ahead and attempted a forced landing on a dirt road immediately next to the field because the engine was losing power. Upon touching down, the right main wheel encountered soft dirt and the airplane nosed over inverted, bending the engine mount and wrinkling the fuselage and vertical stabilizer.

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

The pilot's failure to maintain clearance from an irrigation vent pipe.

Full narrative available

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