A long list of things went wrong in January and contributed to the collision between an Army helicopter and an American ...

The deadly mid-air collision at Reagan Airport in January was years in the making, the operations manager of the DCA air ...

At their closest points, helicopters and planes routinely flew within 75 feet near the airport, according to the NTSB.

Investigators so far have highlighted several factors that may have contributed to the collision, which left 67 people dead.

The video was released Wednesday as NTSB board members opened a three-day hearing that aims to look into what caused the Jan.

The Army helicopter that collided with a plane over D.C. in January had incorrect altitude readings, contributing to the ...

The National Transportation Safety Board is launching a three-day investigation hearing on the D.C. plane crash that left 67 ...

Tuesday was day two of a three-day hearing on the deadly plane crash at Reagan Airport that took the lives of 67 people in ...

The hearing, the second of three days, focused on the training guidance of the parties involved in the Jan. 29 incident that ...

The new details were part of thousands documents -- including new video from the end of the runway showing the crash.

Federal investigators opened a three-day inquiry Wednesday into the January plane crash that killed 67 people over Washington ...