Primary finding
Probable cause
The pilot was unable to see a wire due to the setting sun and the helicopter subsequently struck the wire.
Investigator assessment
Analysis narrative
The pilot reported that while performing aerial applications, the main rotor mast struck a wire. The helicopter became uncontrollable and it impacted a cornfield. He stated the sun was setting and he did not see the wire. The helicopter sustained substantial damage to the fuselage, tail boom, tail rotor blade, and main rotor blades. The pilot reported that there were no preimpact mechanical failures or malfunctions that would have precluded normal operation.