The Post spoke to several aviation experts about a number of factors that may have contributed to the fatal collision.

Gripping footage of an air rescue operation shows helicopter crews hoisting three backcountry skiers from a mountain in Washington state.

American Airlines flight 5342 was approaching to land in Washington DC from Wichita, Kansas when it collided with a military helicopter.

The flight data recorder and cockpit voice recorder, known as the black boxes, may offer clues about what went wrong before ...

Footage of the rescue mission last week shows crews piloting two helicopters for King County Sheriff's Air Support team over thick wilderness near Stevens Pass, a ski area in Washington's Cascades.