The people who strung the line - which is used in a sport akin to tightrope walking - had filed an aviation safety notice, raising questions about the air alert system.

Slackliners took the line down because of forecasted rain and high winds, but strung it up again the day of the accident.

How was a thin strip of nylon or polyester webbing stretched between two points to blame in the January crash that killed four near Superior?

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

The helicopter crashed after it struck a recreational slackline suspended in Telegraph Canyon on Jan. 2, killing all four ...

Investigators say a helicopter hit a highline stretched across Telegraph Canyon near Superior, killing four. Here’s what to know.

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

Jan. 28 (UPI) --A pair of German daredevils took a walk across a slackline suspended between two hot air balloons and earned a world record for their stroll at an altitude of 8,202 feet. Friedi Kühne ...