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

The National Transportation Safety Board, during hearings on Thursday, grilled officials from the Army, air traffic ...

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

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

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

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

Investigators testifying at a hearing into the January's mid-air crash in DC suggest faulty altitude data may have led to a ...

The National Transportation Safety Board will wrap up its public testimony about the fatal midair crash between an Army ...

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

Investigators aim to uncover insights into what caused the crash between an American Airlines plane and a Black Hawk helicopter over Ronald Reagan National Airport.