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

A sightseeing helicopter carrying four family members crashed in the mountains of central Arizona after apparently striking a ...

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

The line was more than 1 kilometer long, or more than half a mile, strung between mountains near Superior, Arizona, ...

Federal investigators are examining if a slackline was properly authorized following the deadly helicopter crash near ...

SUPERIOR, Ariz. — Four people have died after a helicopter crashed Friday morning in Superior, Arizona, east of Phoenix, ...

A half-mile-long slackline was hung across Telegraph Canyon, a recreational area located about 60 miles east of Phoenix in ...

Four Oregon family members were identified Sunday as those killed when the private helicopter they were in hit a slackline ...

A helicopter pilot is warning about the dangers of flying in canyons after a deadly crash near Picketpost Mountain that ...

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 ...