Ambiguity of the American authorities regarding the reason for the cancellation of thousands of flights.
The American Minister of Transportation rejects the possibility of a cyber attack, because it is not yet clear whether the extensive disruption in flights is due to the inefficiency of the current network or a technical problem with the routers.
The director of the American Civil Aviation Organization also declared the source of this disruption to be a hardware problem and said that investigations are ongoing to find the exact cause of it.