As the National Transportation Safety Board investigates the fatal midair collision that left 67 dead, details are emerging about mistakes and failures leading up to the crash.

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' ...

At least 28 bodies were pulled from the icy waters of the Potomac River after the helicopter apparently flew into the path of ...

The collision between an American Airlines passenger jet and an Army helicopter at Ronald Reagan Washington National Airport ...

The American Airlines crew members were traveling on a daily route from Wichita, Kansas, to Washington, D.C., on Wednesday ...

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