VALLEJO, CA, USA
N1082S
BELL 206B
WHILE PERFORMING A ROUTINE AERIAL OBSERVATION FLIGHT TO INSPECT THE INTEGRITY OF THE PACIFIC GAS & ELECTRIC COMPANY'S TRANSMISSION LINES, THE HELICOPTER CRASHED AFTER COLLIDING WITH AN UNMARKED STATIC WIRE. THE LINE INSTALLATION WAS ON SLOPING TERRAIN & CONSISTED OF 3 TOWERS. THE SEVERED STATIC LINE WAS SUPPORTED BY TOWERS HAVING HIGHER ELEVATIONS. THE PLT FAILED TO DETECT & AVOID THE ELEVATED STATIC LINE. PG & E FAILED TO PROVIDE THE PLT WITH ADVANCE NOTICE OF THE HAZARDOUS & SOMEWHAT UNIQUE LINE CONFIGURATION.
Source: NTSB Aviation Accident Database
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