National Transportation Safety Board Chair Jennifer Homendy will testify at a March 27 Senate Commerce hearing on the mid-air collision of an Army Black Hawk helicopter and American Airlines regional jet that killed 67 people,

There's an "intolerable risk to aviation safety" with helicopters and planes flying too close to one another near DCA.

The National Transportation Safety Board on Tuesday recommended that helicopter traffic be banned from a four-mile stretch over the Potomac River when flights are landing at Ronald Reagan National Airport.