This data point is one of several key mysteries investigators are exploring as they seek to explain what caused the nation's worst air disaster in more than a decade, aviation experts said.

"The Army pilot made a grave error," Timothy Lilley said. "It hurts me because those are my brothers, and now my son is dead." ...

A devastating mid-air collision between a commercial airliner and a U.S. Army helicopter sent both aircraft crashing into ...

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There are no survivors after PSA Airlines Bombardier CRJ700 regional jet collided with a Black Hawk helicopter. Here's what ...

There were 64 passengers aboard the plane, and three Army soldiers in the helicopter, according to officials. Here's a look ...

The video may appear graphic to some viewers. (NEXSTAR) – Images from the EarthCam video service captured images of what appears to be the fiery crash of an American ...

A recovery mission is underway in the Potomac River after a military helicopter collided with an American Airlines regional aircraft near Washington, D.C., on Wednesday evening.Hundreds of emergency ...

2 NY National Guard members killed in helicopter crash identified 3 killed, 1 hurt in National Guard copter crash near US-Mexico border US military clears Osprey to fly 3 months after fatal crash ...