29 collision between an Army helicopter and a passenger airplane over Washington, D.C., killed 67 people, making it the deadliest U.S. air disaster ... But the full report explaining the cause ...

The Jan. 29 collision between an Army helicopter and a passenger airplane over Washington, D.C., killed 67 people, making it the deadliest U.S. air disaster since 2001. The National Transportation ...

29 collision between an Army helicopter and a passenger airplane over Washington, D.C., killed 67 people, making it the deadliest U.S. air disaster since 2001. The National Transportation ... s vision ...

investigators have completed their work at the scene where both aircraft fell into the Potomac River in the deadliest U.S. air disaster since 2001. The National Transportation Safety Board offered ...