American Transmission Co.

Helping to keep the lights on, businesses running and communities strong®

Managing vegetation above the tree line

At American Transmission Co., our job is to operate our transmission system safely and reliably, and we take that responsibility seriously. An important part of that involves managing the vegetation around our transmission facilities to prevent outages. With more than 10,000 miles of transmission lines, that’s no small task.

One unique approach we take is to get help from above – help from a helicopter, that is. We use a light utility helicopter equipped with a heavy-duty aerial saw to trim the vegetation near some of our lines. Rotary saw blades are suspended on a 90- to 100-foot vertical boom that is attached to the helicopter.

The helicopter/aerial saw combination is particularly effective in areas where difficult terrain and wetlands make it challenging for ground crews to access the transmission line corridor. This technique is also very efficient, as the helicopter crew is able to complete in just a few hours what would take a ground-based crew several days to accomplish.

Next week an air-saw equipped helicopter crew will begin side-trimming vegetation along lines in five Wisconsin counties—Crawford, Richland, Rock, Shawano and Waupaca County.

In the interest of safety, if you see a helicopter/aerial saw in the area, please stay at least 300 feet away from the work area and refrain from stopping, viewing and photographing the work from a roadway.

Want to know more? Check out our YouTube channel for video footage of similar aerial saw vegetation management work.