The Army Black Hawk is said to have been flying higher than it should have been when it collided with a passenger jet, killing 67 people. And the air traffic controller on duty was doing a job usually ...

Dominic Nicholls, who flew helicopters for the British Army, explains how airspace is usually controlled to avoid accidents ...

Air traffic controllers twice alerted the crew of a U.S. Army helicopter to the presence of an inbound American Airlines jet, ...

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