The National Transportation Safety Board was scheduled to provide an update on Thursday on the deadly airplane-helicopter crash over Washington, D.C. Watch live at 2:45 p.m. on Thursday, Jan. 30 in the video player above.

A preliminary report by the Federal Aviation Administration found that staffing at the Ronald Reagan Airport air traffic control tower was “not normal” at the time of the deadly collision between an Army Black Hawk helicopter and an American Airlines regional jet.

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 mid-air collision near Reagan Washington National Airport in a Thursday press

The National Transportation Safety Board (NTSB) is slated to provide an update Thursday afternoon on the investigation into the recent fatal midair aircraft collision near Reagan Washington

More than 60 people were killed when an American Airlines regional passenger jet collided with a U.S. Army Black Hawk helicopter on Wednesday and crashed into the frigid Potomac River near Ronald Reagan Washington National Airport.

Authorities believe there are no survivors in the accident, which happened as a regional passenger jet was attempting to land Wednesday night at Ronald Reagan Washington National Airport.

Washington, D.C. fire chief said on Thursday that there are likely no survivors in the midair collision of a passenger plane and a helicopter near the Ronald Reagan Washington National Airport Wednesday night.

The fatal midair collision between an American Airlines passenger jet and an Army helicopter followed a string of near misses at airports over the last several years.

Crews are recovering bodies from the Potomac River after a military helicopter and a commercial plane collided, killing all 67 people on board both aircraft.

Following the deadly crash between an American Airlines plane and Black Hawk military helicopter in Washington D.C. on Wednesday evening, investigators are still searching for answers. NewsCenter 5 spoke with an aviation expert and asked him about what investigators will be looking for.

Human error or mechanical error or a combination of both? Those are some of the questions the National Transportation Safety Board will look into to determine the cause of Wednesday night’s crash involving a CRJ twin engine passenger jet and a black hawk military helicopter over the Potomac River.