Air crash investigations can take months, and federal investigators told reporters they would not speculate on the cause.

Divers are expected to return to the Potomac River as part of the recovery and investigation after the United States' deadliest aviation disaster in almost a quarter century.

Part of the wreckage is seen as rescue crews search the waters of the Potomac River after a passenger plane on approach to Reagan National Airport crashed into the river after colliding with a US Army ...

The National Transportation Safety Board said it was too soon to speculate the cause of the deadly crash above the Potomac ...

Sixty-seven people died in a collision between a Bombardier CRJ700 regional jet operated by PSA Airlines and a military Black ...

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.

The soldiers on the helicopter that collided with an American Airlines jet on Wednesday night were from the 12th Combat ...

Divers are expected to return to the Potomac River on Friday as part of the recovery and investigation after a midair ...

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

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

American Airlines Flight 5342, carrying 60 passengers and four crew members, collided with a Black Hawk helicopter, crewed by three people, over Ronald Reagan National Airport in Washington, D.C., on ...

Investigators have recovered the black boxes from the American Airlines jet involved in a mid-air collision with a U.S. Army ...