The Federal Aviation Administration of the United States announced that the order to stop the takeoff of planes in the country was canceled after more than four hours.
This order was issued due to a disruption in the communication systems, and according to this, domestic American flights were not allowed to take off from the airports.
Telecommunication disruptions and flight cancellations caused the delay or cancellation of thousands of flights at major US airports.
The cancellation of the national grounding order means that planes can be allowed to take off again, but it does not mean that all flights will immediately return to a normal schedule.