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

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

The NTSB began its hearings looking into the deadly January air crash between a military vehicle and a passenger jet.

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

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 ...

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

The National Transportation Safety Board has opened public hearings on a January midair collision between an Army Black Hawk ...

The National Transportation Safety Board on Thursday questioned the failure of an air traffic controller to issue a warning about a potential collision in the moments before a crash between an Army ...