The Post spoke to several aviation experts about a number of factors that may have contributed to the fatal collision.

Using flight tracking data, CCTV and recordings of air traffic control, Sky News' Data and Forensics Unit examines the events that led to the disaster, which is thought to have killed 67 people.

The accident that resulted in a commercial airplane crashing into the Potomac yesterday will require air safety investigators ...

American Eagle flight's crash with military helicopter near Reagan National Airport on Wednesday left no survivors.

One onlooker said that he initially “didn’t think much of it” and thought the collision resembled “shooting stars.” ...

The National Investigative Unit tracked the American Airlines plane moments before it collided with an Army Black Hawk ...

Grainy video footage taken in the dark of night, seemingly by an airport CCTV camera, appears to capture the moment American Airlines Flight 5342 was in collision with a U.S. Army helicopter.

Sky's Paul Kelso goes in a helicopter and aeroplane flight simulator to get a sense of the last moments each aircraft experienced before colliding over Washington.

Officials said a search and rescue operation is underway, adding there is no information on any casualties at this time.

FRESNO, Calif. (KFSN) -- Wednesday's mid-air collision is the first major commercial air crash in the United States since ...

A massive search-and-rescue operation is underway after a passenger plane crashed with a military helicopter in Washington, D.C. Retired U.S. Air Force Brig. Gen. John Teichert breaks down what ...