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

Air traffic controller failed to notify commercial plane crew about approaching Army helicopter before Washington D.C.

Incorrect altitude readings on the Army helicopter that collided with a passenger plane over Washington, D.C., in January ...

More victims identified in flight 5342 crash, many from DC area While we're still waiting for the official list of Flight 5342 passengers, we're learning more about the victims with each passing ...

The incident was the first commercial airline plane crash in the United States since 2009, when a Bombardier DHC-8 propeller plane stalled and crashed in Buffalo, New York.

It's been six months since 67 people were killed in a midair collision over the Potomac River, and now lawmakers say they are ...

The NTSB showed the harrowing video of the Jan. 29 crash over the Potomac River as the agency kicked off a three-day hearing ...

Aviation experts said the goggles may have created viewing difficulties for the pilots of a U.S. Army helicopter that collided with a jet in January.