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.

A regional jet carrying 64 people collided in midair with a Black Hawk helicopter as the plane was approaching a runway at ...

A massive search operation is underway after a passenger aircraft carrying 64 people collided midair with a US Army Black Hawk helicopter near Reagan National Airport outside of Washington, DC, ...

Sixty-seven people were believed to have died after an American Airlines jet and a U.S. Army helicopter collided and crashed into the Potomac River.

Dave is the guy who intuited the design of the stealth Blackhawk that went down in bin Laden's Abbottabad compound and exposed a secret U.S. war in Africa simply as a matter of course. An Italian ...