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N948DS accident description

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Crash location 37.058056°N, 120.849722°W
Nearest city Los Banos, CA
37.058279°N, 120.849915°W
0.0 miles away
Tail number N948DS
Accident date 21 Aug 2011
Aircraft type Bell 47G-4
Additional details: None

NTSB Factual Report

The pilot was performing an agricultural application flight in the helicopter over a cantaloupe field. During the final pass along the field border, he observed bee boxes adjacent to power poles, and he shut off the spray applicator. After passing the boxes, he turned the spray applicator back on; his next recollection was of lying upside down in the field. Examination of the helicopter at the accident site revealed that the main rotor blades struck a set of wooden power poles at the 20-foot-level. The helicopter sustained substantial damage to the main rotor blades and fuselage structure. The pilot reported that he had flown an application flight over the same field a week prior, and was aware of the location of the power poles. The pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation.

NTSB Probable Cause

The pilot's failure to maintain clearance from the power poles while maneuvering during low-altitude operations.

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