Shortly after the crash, another helicopter flew near the slackline, the National Transportation Safety Board investigation ...

A preliminary report reveals the helicopter hit a slackline, a type of webbing, that was stretched across Telegraph Canyon.

The NTSB released on Wednesday its preliminary report into the helicopter’s collision with a slackline, including new ...

The temporary rules imposed after last year’s collision of an airliner and an Army helicopter to improve the safety of the ...