The NTSB noted that it had obtained new information that indicated that the ATC saw the Black Hawk UH-60's altitude as 300 feet.

Investigators trying to determine what caused last week’s deadly midair collision between a US military Black Hawk helicopter and an American Airlines plane near Washington, DC, briefed lawmakers Thursday on what they’ve learned after combing through data from both aircraft and air traffic control.

Readings have been compared from the black box recovered from American Eagle flight 5342 and the air traffic control tower about the Black Hawk helicopter

The Federal Aviation Administration and National Transportation Safety Board plan to brief senators Thursday on last week's midair collision between an American Airlines passenger jet and a military helicopter near Washington's Ronald Reagan National Airport that killed 67,