The National Transportation Safety Board is an independent federal agency tasked with examining serious transport-related accidents.

Kentucky native J. Todd Inman is helping oversee the investigation into the Washington D.C. plane crash for the National Transportation Safety Board.

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.

Black boxes recovered after a jet and Army helicopter collided near DC; 14 still missing as NTSB investigates the deadly crash. Follow Newsweek's live blog.

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.

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.

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

An American Airlines passenger jet collided with an Army helicopter at Washington National Airport, killing 67. President Trump reported no survivors. The crash, the deadliest in over 20 years, is under investigation.

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.

Investigators plan to push forward on Friday with efforts to retrieve the two aircraft involved in a crash in Washington that killed 67 people and raised questions about air safety in the U.S. capital.

U.S. authorities said on Thursday it was not yet clear why a regional jet crashed into a U.S. Army helicopter at a Washington airport, killing 67 people in the deadliest U.S. air disaster in more than 20 years.