This, according to RIA Novosti, was told by the press secretary of the White House Karine Jean-Pierre at a briefing.
“The President has instructed the Department of Transportation to conduct a comprehensive investigation into the causes of this incident and provide him with the latest information on this matter,” she said.
Jean-Pierre added that the US administration does not consider a cyber attack as the cause of this failure.
Earlier, the US Federal Aviation Administration announced failures in the warning system for pilots.
The United States has halted all flights after a failure in the NOTAM alert system.
By evening, the flight ban was lifted.