WASHINGTON -- Helicopters will be permanently restricted ... and emergency medical services. The Army Black Hawk involved in the January crash belonged to the 12th Aviation Battalion based at ...

Federal crash investigators have said a helicopter route used by an Army Black Hawk for training when it crashed midair with a passenger aircraft over Washington, D.C., in late January ...

The agency says the approved helicopter route is too close to the approach to the runway where an American Eagle plane was attempting to land in January.