Ban extended on helicopter route involved in deadly D.C. midair collision after NTSB warns of "serious safety risk"
The NTSB issued its preliminary report on the midair collision between a passenger plane and helicopter over Washington, D.C.
What is known about the deadly January air crash between a passenger jet and US Army helicopter
An American Airlines passenger jet and an Army helicopter collided on Jan. 29 as the plane prepared to land at Washington, ...
NTSB recommends ban on certain helicopter flights near National Airport
The National Transportation Safety Board said the separation between helicopters and jets in the area was insufficient and ...