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 wrap up its public testimony about the fatal midair crash between an Army helicopter and a commercial jet ...

The small four-seater aircraft crashed into the roof of a home, which is situated near Cashmere Airport. The crash left two ...

Twenty seconds before impact, the alert system warned 'traffic, traffic.' The pilots were flying blind, unaware a Black Hawk was nearby ...

The crash involved an American Airlines jet and a Black Hawk helicopter near Ronald Reagan National Airport in January, ...

Investigators found the helicopter was flying higher than it should have been over the Potomac River in Washington. Its ...

Federal safety leaders are uncovering new details about a tragic mid-air collision in Washington, D.C., that claimed 67 lives ...

The communications between pilots and air traffic control were laid out in a visual timeline in Day One of the NTSB ...

Investigators revealed the Cessna single-engine plane went down after the pilot reported a loss of engine power.