Add Yahoo as a preferred source to see more of our stories on Google. A slackline hung about 600 feet above the ground was likely the cause of a fatal helicopter crash in January. Four people were ...

A helicopter crash near Superior killed four people, including an experienced pilot and his three nieces, after allegedly striking a kilometer-long slackline. The FAA had issued a safety alert for the ...

A helicopter pilot and three family members were killed after colliding with a slackline near Telegraph Canyon in Arizona.

A helicopter crash on Jan. 2 claimed the lives of four family members from Oregon in a remote area of Pinal County, Arizona. Officials said the aircraft struck a slackline stretched across a canyon ...

A fatal helicopter crash southeast of Phoenix involved a slackline, also known as a highline, which investigators say the aircraft struck before plunging into a canyon. The crash occurred Jan. 2 in ...