U.S. authorities restricted helicopter flights near Reagan Washington National Airport on Friday, after a midair collision between an American Airlines passenger jet and a military helicopter killed 67 people this week.

Watch as the National Transportation Safety Board hosts a media briefing on its investigation into Wednesday’s mid-air collision near the Ronald Reagan Washington National Airport.The collision involved a PSA Airlines Bombardier CRJ700 airplane and a Sikorsky H-60 military helicopter and killed 67 people.

Sixty passengers and four crew members from the plane and three Black Hawk helicopter personnel are feared dead as a recovery mission is underway.

Clues emerging from the moments before an Army helicopter collided with a passenger jet suggest breakdowns in the system meant to help aircraft land safely at the busy Reagan National Airport.

CBS News confirmed only one air traffic control worker was managing the helicopters when the crash between a military helicopter and passenger plane occurred in Washington D.C. That is a job normally done by two people.

The National Transportation Safety Board (NTSB) urged the public not to “speculate” about the cause of the deadly midair collision near Ronald Reagan Washington National Airport in a Thursday

An American Airlines plane carrying 60 passengers and four crew members collided with an Army Black Hawk helicopter outside Reagan National Airport near Washington, D.C. Wednesday night. A D.C. fire official said Thursday that “we don't think there are any survivors from this accident" and "we are switching from a rescue operation to a recovery operation.

U.S. President Donald Trump said on Friday the Army Black Hawk helicopter that collided with a regional passenger jet in Washington, D.C. was flying too high at the time of the accident, in what appeared to be a major disclosure about the investigation.

Investigators were able on Friday to recover the helicopter's black box, which captures flight data and voices in the cockpit

Federal authorities have restricted helicopter flights near Reagan Washington National Airport after a midair collision between a passenger jet and a military helicopter resulted in 67 fatalities. Concerns about air traffic control staffing and air safety have intensified,

Recovery efforts in Wednesday night's midair collision between a commercial jet and Army helicopter responsible for killing 67 people continue as the plane’s cockpit voice recorder