Through maps, videos, photos and radio transmissions, CNN is piecing together what occurred during the deadly, midair collision.

Data from air traffic control radar showed the military chopper was flying at 300 feet on the air traffic control display at ...

The Army helicopter and regional American Airlines jet that collided over Washington are both workhorse aircraft that operate ...

An American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter collided midair and crashed into the ...

That's the same flight path that that plane and helicopter crashed last night on. Now, many have been wondering how did all ...

A military helicopter was flying above the maximum altitude for its route when it collided with a passenger plane near ...

Two new videos of the fatal American Airlines crash on Wednesday night are adding to speculation about how it happened.

An American Airlines regional jet went down in the Potomac River near Ronald Reagan Washington National Airport.

Victims' families gathered near the site where a plane and copter collided and fell into the Potomac River. 'They are all ...

A timeline of the Washington, D.C., plane crash on Jan. 29 details the moments before and after an American Airlines ...

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