Investigators issued their preliminary report Tuesday in the probe into the devastating crash between an American Airlines plane and a U.S. Army Black Hawk helicopter.

The Jan. 29 collision between an Army helicopter and a passenger airplane over the Potomac River in Washington killed 67 people.

Salvage and recovery operations for the jet that crashed in San Diego Bay were completed this week, according to a statement from the U.S. Navy Wednesday.

All 21 passengers injured in a Delta Air Lines crash Monday have been released from the hospital, according to Delta.Video above: Passenger describes Toronto plane crash"The Delta and Endeavor ...

The 21 passengers who were injured in the Delta plane crash in Toronoto have been released ... of Canada will lead the investigation. The National Transportation Safety Board in the U.S. was ...

and the National Transportation Safety Board (NTSB) are on-site to investigate the crash. Small plane crashes at Marana Regional Airport in Arizona,(Representational image) Marana Police ...

Passengers have described their amazement after most of them escaped unscathed from a plane that crash landed in Toronto on Monday afternoon. The Delta flight skidded along the runway in flames ...

PHOENIX – Two people were killed in a plane crash at a southern Arizona airport ... hit the ground near a runway and caught fire, the National Transportation Safety Board (NTSB) said, based ...

What caused it remains under investigation by the Canadian Transportation Safety Board, which said Tuesday that the aircraft's black boxes have been recovered, and the U.S. National Transportation ...

The National Transportation Safety Board (NTSB) and FAA are investigating. The plane destroyed in the crash was a Lancair 3600. It’s a kit plane but that does not mean it’s unsophisticated.