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

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

Friday saw the final day of public testimony to the National Transportation Safety Board over the fatal midair crash – which occurred almost exactly six months ago in February ...

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 ...

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

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.