BBC News, Washington DC
The black boxes for a commercial flight that collided with a military helicopter in Washington DC have been located, while questions are mounted on the staff and other close -up to the airport where the plane landed.
Normally, two people manage air traffic control for helicopters and flying planes in the region – one of the most controlled air areas in the world – but only one person did it on Wednesday at the time of the accident, according to sources Cited by the BBC US of the BBC partner CBS News.
Managers still investigate the cause of the incident that killed the 67 people on the two planes.
The National Transportation Safety Board (NTSB) said that a preliminary report will be published in 30 days.
The flight data recorder and the cockpit voice recorder, known as Black Boxes, can help provide clues to investigators on investigators What may have been wrong with the flight.
According to the NTSB, late Thursday evening, the two boxes were transported to one of its laboratories for evaluation.

In other developments Thursday, the figures for air traffic control staff, reported for the first time by the New York Times, were noted as “not normal”, according to a preliminary report by the Federal Aviation Administration (FAA).
The federal government has struggled for years to provide certain key positions at the FAA.
The type of endowment by endowing who had a worker of air traffic control managing both helicopters and aircraft at the National Airport in Regan Washington on Wednesday evening is not uncommon and would not have violated the directives.

The divers spent most of Thursday swimming in the frozen waters of the Potomac river, in search of the bodies of the victims.
The search was suspended Thursday evening due to dangerous conditions.
There were 64 passengers aboard the American Airlines flight which collided with a Black Hawk Army Black helicopter which was on a training mission flight. Three soldiers were on board.
The teams have so far recovered 27 bodies from the plane and one from the helicopter.
During a white house briefing on Thursday, President Donald Trump started with a moment of silence and a prayer for the victims.
He said “we can only start to imagine the agony that you all feel”, adding: “Our hearts are broken alongside yours”.
Trump speculated On the cause of the collision, suggesting without evidence that the lower hiring standards for Air Controllers of the FAA in previous administrations managed by the Democrats may have been a factor.
Later Thursday, he signed a memorandum to put an end to the practices of diversity, equity and inclusion (DEI) in the aviation sector.
Dei programs aim to promote participation in workplaces by people from environments. Donors say they approach historical or under-statement discrimination and under-representation, but criticisms argue that they can themselves be discriminatory.
Trump also signed an executive decree to appoint a new FAA chief.
The fatal incident occurred Wednesday around 9:00 p.m. (02:00 GMT), when a PSA Airlines jet worked while the American Airlines 5342 collided in the air with an American army helicopter while ‘He was approaching Ronald Reagan Washington National Airport.
The two planes headed for the Potomac river. The passenger’s plane broke into several rooms and sank several feet in the water, while the helicopter found itself backwards in the river.
The plane, a CRJ700 bomber, left Wichita, Kansas, and wore dozens of passengersIncluding a pair of young artistic skaters, their mothers and two Russian coaches.
Kremlin spokesperson Dmitry Peskov was cited in Russia Media saying: “There were others of our fellow citizens on board. This is bad news from Washington today.
“We are sorry and send our condolences to families and friends.”
On Friday, China confirmed that two of its nationals died in the accident and expressed “deep condolences”.
China has urged the United States “to update it quickly on the progress of research and rescue operations, to quickly clarify the cause of the accident and to properly manage follow-up issues,” said a carrier Word of the Beijing Foreign Ministry.
The helicopter was a Sikorsky H-60 who took off from very Belvoir in Virginia with three soldiers on board, and belonged to the company B, 12th Aviation Battalion.
“It is a tragedy, a horrible loss of life for these 64 souls on this civil plane, and of course the three soldiers of this Black Hawk [helicopter]”Said the new defense secretary Pete Hegseth on Wednesday.