Authorities plan to display garbage in the river so they can better understand how the plane reacted to the collision.
Work on the removal of large segments of the water crane, starting on Sunday and will last for a week, Mr. Iman said.
More than 500 people work around the clock on the site of the disaster in the river of the flow, said Washington Fire Service John Donnelli.
Mr Iman asked about reports that one air traffic controller was in charge of helicopter control and planes flying in the area
He did not comment on the specifics, but said the officials plan to study the controller’s behavior over the past few weeks and, in particular, 72 hours before the disaster.
“Obviously, on this day we will look not only at the personnel schedule … (but), how many people, what functions they did, they are united.”
Air traffic control group is still interviewed.
Mr. Iman also asked if his team with the White House was in contact.
President Donald Trump suggested without evidence that the helicopter involved in the crash was flying too high. “
The air traffic management records published on the Internet suggested that the controller tried to warn the helicopter about the aircraft American Airlines a second before the collision.
The helicopter pilot seemed to say that they confirmed that they knew about the plane, but a few minutes later, two planes collided.
Trump also stated that a variety of diversity in FAA could lead to security problems.
“Our task is to find facts,” said Mr. Iman. “More importantly, our task is to make sure that this tragedy will not happen again – no matter what anyone can say.”
