13 Aug 2014: ROBINSON HELICOPTER R44 UNDESIGNAT — BACK NINE AERIAL LLC

13 Aug 2014: ROBINSON HELICOPTER R44 UNDESIGNAT — BACK NINE AERIAL LLC

No fatalities • Lancaster, WI, United States

Probable cause

The pilot's inadequate monitoring of the environment and failure to maintain clearance from transmission wires during an aerial application flight.

— NTSB Determination

Accident narrative

The pilot reported that while conduction an aerial application flight, he did not see power lines in his path and the helicopter struck the wires that and then the ground. The main rotor blades severed the tail boom of the helicopter during the event. In his report, the pilot listed no mechanical malfunctions or failures of the helicopter.

Contributing factors

  • cause Pilot
  • cause Altitude — Not attained/maintained
  • cause Awareness of condition

Conditions

Weather
VMC, wind 300/09kt, vis 4sm

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