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.

An Army Black Hawk helicopter collided midair with an American Airlines flight from Wichita, Kansas, at Reagan National Airport on Wednesday.

A commercial plane with 60 passengers and four crew members on board collided with a military helicopter with a crew of three near Washington, D.C., on Wednesday night.

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,

The pilots of the US Army helicopter that collided with an American Airlines Group Inc. regional jet near Washington last week were likely wearing night-vision goggles at the time of the accident. Preliminary information including the type of mission they were flying and crew communications indicates the pilots were using the device,