No fatalities

Helicopter Collision with Power Lines During Aerial Application

Lancaster, WI, United States

On August 13, 2014, a ROBINSON HELICOPTER R44 UNDESIGNAT operated by BACK NINE AERIAL LLC was involved in an aviation accident near Lancaster, WI. No fatalities were reported. Investigators recorded the probable cause as: The pilot's inadequate monitoring of the environment and failure to maintain clearance from transmission wires during an aerial application flight. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

A helicopter struck power lines and the ground during an aerial application flight. The pilot reported no mechanical malfunctions, and the main rotor blades severed the tail boom during the impact.

Incident Overview and Pilot Report During an aerial application flight, the pilot reported that he did not see power lines in the helicopter's path. The aircraft subsequently struck the wires and then the ground. The pilot's report indicated that no mechanical malfunctions or failures of the helicopter were present at the time of the event. ## Damage and Structural Impact The collision caused significant structural damage to the helicopter. Specifically, the main rotor blades severed the tail boom of the aircraft during the event. The source does not provide additional details regarding the extent of the damage or the condition of the helicopter after the impact.

Contributing factors

PilotAltitude — Not attained/maintainedAwareness of condition