Hydro One, one of the largest electric utilities in Canada, grounded its helicopter fleet after four workers crashed while completing work on a transmission tower. Helicopters will remain grounded until the cause of the crash is determined.
The work utilizes a specially-equipped helicopter which allows the line to remain energized while crews perform the maintenance.
Tree trimming was completed faster with the aerial saw than with traditional methods, covering 10-12 miles per week compared to for a mile per week for a crew using a bucket truck.
FirstEnergy crews used helicopters to build a power line over the Pennsylvania Turnpike. The electric utility employed a helicopter to get the job done as part of a 7-mile, $11 million transmission line upgrade.
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