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

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

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

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

Incorrect altitude readings on the Army helicopter that collided with a passenger plane over Washington, D.C., in January ...

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

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

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 began its three days of investigative hearings on Wednesday into January's midair ...

An NTSB investigation into a fatal helicopter-airplane collision in D.C. revealed a faulty helicopter altimeter and prior ...