Aviation Marker Ball Installation on the Big Eddy-Knight 500kV Transmission Line Transmission
Aviation Marker Ball Installation on the Big Eddy-Knight 500kV Transmission Line
|Client||Bonneville Power Administration (BPA)|
|Completion Date||November 2016|
|Location||The Dalles, Oregon|
|Completed by||Sturgeon Electric Company, Inc.|
Sturgeon Electric crews installed 23 aviation marker balls and associated hardware atop BPA’s Big Eddy-Knight 500kV Transmission Line. The project marked the first time a federal nonprofit agency allowed a transmission line contractor to use Class B Human External Cargo (HEC) helicopter methods, which involves flying line workers below a helicopter in an “air chair” to accomplish the required work.