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 ...

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 ...

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

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

The National Transportation Safety Board on Thursday continued to grill officials from the Army, air traffic controllers and ...

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 ...

A deadly midair collision occurred in Washington this January. Sixty-seven people died in the accident. A broken altimeter ...