An American aerospace technology company has successfully flown an unmanned, full-sized helicopter in a test site in Arizona.

A private helicopter crashed into a slackline in a mountainous region of southeast Arizona earlier this month, killing the pilot and all three passengers. The incident is among the first documented ...

A pilot and trooper-paramedic for the Arizona Department of Public Safety died in the tragedy in Flagstaff, Ariz., police confirmed Thursday, while video shared online captured the helicopter ...

An Arizona Department of Public Safety helicopter went down Wednesday night while it was responding to a shooting, killing both people on board. The helicopter was assisting the Flagstaff Police ...

A radio feed from a police helicopter captured two loud banging sounds and a voice saying “we’re going down,” just before it crashed, killing the two people on board, according to a preliminary ...