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 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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A helicopter crash on Jan. 2 claimed the lives of four family members from Oregon in a remote area of Pinal County. Officials said ...

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 ...