The researchers are looking for answers after a collision in the air on Wednesday night on Washington, DC, left 67 people dead.
The accident took place around 8:48 pm, near Reagan Washington National Airport, just south of the city, when a small passenger plane that makes its final approach to the airport crashed with an army helicopter.
Follow for live coverage
The graphics below illustrate what we know so far about the blockade. They will be updated as more information is made available.
The collision involved American Eagle Flight 5342, a small plane that transported 60 passengers and four crew members, and a Black Hawk helicopter from the US Army. Uu. With three people on board.
The helicopter was carrying out an “annual competence training flight” at the time of the accident, said Secretary of Defense Pete Hegseth on Thursday.
The data of the Flightradar 24 aircraft monitoring site show that the plane descends at the time of the accident, with its altitude falling from 4,000 feet to around 400 feet. The last helicopter transmission altitude, captured about four minutes before the accident, shows that it flew to about 400 feet.
There were no survivors, President Trump confirmed Thursday, making this the first fatal commercial plane in the US. Since 2009 and the second aviation accident with 10 or more victims so far from the decade.