The NTSB concluded three days of investigative hearings into the collision between an Army helicopter and a passenger plane ...

Air traffic controller failed to notify commercial plane crew about approaching Army helicopter before Washington D.C.

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

The NTSB showed the harrowing video of the Jan. 29 crash over the Potomac River as the agency kicked off a three-day hearing ...

The communications between pilots and air traffic control were laid out in a visual timeline in Day One of the NTSB ...

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

The National Transportation Safety Board began its three days of investigative hearings on Wednesday into January's midair ...

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

They were fiancés, mothers, fathers, friends, pilots, lawyers, hunters, coaches and figure skaters. These are the 67 people ...

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