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

The National Transportation Safety Board will hold three days of hearings on the January midair collision that killed 67 ...

The goggles also limited the pilots' peripheral vision as they flew near Ronald Reagan Washington National Airport.

A three-day National Transportation Safety Board hearing on the deadliest U.S. aviation accident in decades dug into problems ...

The NTSB heard testimony from air traffic controllers, the Federal Aviation Administration and the Army about the mid-air collision of an Army helicopter and passenger plane.

Investigators probing the January midair collision of a passenger plane and an Army helicopter over Washington that killed 67 people found the chopper was flying higher than the it should have been ...

Friday was the final day of the National Transportation Safety Board's (NTSB) three-day hearing on the deadly plane crash at ...

The loved ones of the Livingston family that perished in the deadly D.C. plane crash when a US Black Hawk collided mid-air ...

The National Transportation Safety Board wrapped up a three-day investigative hearing into the mid-air collision between a ...

As hearings unfold into the fatal January plane-helicopter collision near D.C., investigators say the FAA ignored clear ...