NTSB Identification: CHI85LA338.
The docket is stored on NTSB microfiche number 29265.
Accident occurred Wednesday, August 07, 1985 in PICKETT, WI
Aircraft: BELL 47G-5, registration: N1476W
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE FLD WHERE THIS ACCIDENT OCCURRED HAD BEEN SPRAYED ONE WEEK PRIOR TO THE ACCIDENT BY A FIXED-WING ACFT AT AN ALT OF 20 FT. NO WIRES WERE NOTED TO BE A HAZARD AT THAT TIME. ON THE DAY OF THE ACCIDENT THE PLT OF THE HELICOPTER WAS TALKING TO A SPOTTER ON THE GROUND VIA RADIO. NEITHER PERSON NOTICED THE POWER LINES CROSSING ONE END OF A SMALL SECTION OF THE CORN FLD. THE HELICOPTER STRUCK THE WIRES ON HIS FIRST PASS. THEY BECAME ENTANGLED IN HIS ROTOR CONTROL RODS AND THE MACHINE SETTLED TO THE GROUND. THE PLT STATED THAT THE REASON NEITHER HE NOR HIS SPOTTER SAW THE WIRES WAS BECAUSE THEY WERE STRUNG IN A NON-STANDARD MANNER IN THAT THE NON-SUPPORTED SPAN OF WIRE WAS EXCESSIVE. THE WIRES DROOPED TO 7 FT ABOVE THE CORN. ALSO THERE WERE NO GUY WIRES OR TRANSFORMERS ON THE POLES TO INDICATE A POWER LINE ARRAY. THIS PLT HAS OVER 5600 HOURS OF AERIAL APPLICATION FLYING TIME IN HIS LOGBOOK.

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

VISUAL LOOKOUT..NOT MAINTAINED..PILOT IN COMMAND

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

VISUAL LOOKOUT..NOT MAINTAINED..OTHER PERSON


Contributing Factors

OBJECT..WIRE,TRANSMISSION(MARKED)

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