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?

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

Slackline warning was issued before helicopter crash that killed groom and nieces on wedding day - The pilot was taking his nieces on a helicopter ride before his wedding ceremony, family said ...

This article originally published at Helicopter crashes into kilometer-long slackline in Arizona, killing four.

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

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

The National Transportation Safety Board released its preliminary report on the Jan. 2 Superior crash that killed four family members on the pilot's wedding day.

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

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.