Investigators say a helicopter hit a highline stretched across Telegraph Canyon near Superior, killing four. Here’s what to ...
The case is making ripples through the aviation world, with safety experts unaware of any other helicopter crashes that have ...
The people who strung the line - which is used in a sport akin to tightrope walking - had filed an aviation safety notice, ...
Federal investigators are examining if a slackline was properly authorized following the deadly helicopter crash near ...
A helicopter collided with a 2,800-foot-long slackline across Telegraph Canyon in Arizona, killing all four passengers.
The line was more than 1 kilometer long, or more than half a mile, strung between mountains near Superior, Arizona, ...
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