This data point is one of several key mysteries investigators are exploring as they seek to explain what caused the nation's worst air disaster in more than a decade, aviation experts said.

The flight path of an Army helicopter before it collided with an American Airlines Group Inc. passenger jet this week above ...

An American Airlines plane with 64 people on board collided with an Army helicopter over Washington, D.C., and crashed into ...

He indicated 27 bodies had been recovered from the airplane, and one from the helicopter.

Sixty passengers and four crew members from the plane and three Black Hawk helicopter personnel are feared dead as a recovery ...

An American Airlines plane carrying 60 passengers and four crew members collided with an Army Black Hawk helicopter outside ...

The Army Black Hawk is said to have been flying higher than it should have been when it collided with a passenger jet, killing 67 people. And the air traffic controller on duty was doing a job usually ...

An Army Black Hawk helicopter collided with a regional jet near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.

President Donald Trump launched into a brand new baseless rant about how DEI played a role in the tragic collision that ...

The plane, which took off from Wichita, Kan., with 64 people on board, was landing at Reagan National – traveling north ...

Through maps, videos, photos and radio transmissions, CNN is piecing together what occurred during the deadly, midair collision.

Sixty-seven people are believed to have died after a passenger plane hit a military helicopter in mid-air near Washington ...