Investigators have recovered most of the airplane and helicopter from the Potomac River, but continued searching for objects on the river floor.

An American Airlines regional jet went down in the Potomac River near Ronald Reagan Washington National Airport.

Air traffic controllers asked Flight 5342 to switch runways when coming in to land. Black box recordings from the jet and the military helicopter it collided with will help reveal whether this contributed to the accident.

An American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter collided midair and crashed into the Potomac River near Reagan Washington National Airport on Wednesday night. Officials have not provided a death toll but said all passengers and crew on both flights were feared dead.

More than a week after the horrific helicopter-plane collision near Washington, salvage crews have recovered most of the wreckage.

PMAll 67 bodies identified, wreckage recovery continuesAll 67 bodies have now been identified, the Unified Command said Wednesday, and the medical examiner's office is working to "ensure the dignified return of remains to their families and continue supporting the families through this process.

On Thursday, crews removed all large major components of the American Airlines jet and military Black Hawk helicopter, which collided in a deadly incident near Reagan National Airport last week.