There are still delays to flights in the U.S. after a problem with the Notice to Air Missions System, which warns pilots of hazards caused more than a thousand cancellations and nearly seven thousand delays.
The Federal Aviation Administration (FAA) said that normal air traffic operations were slowly resuming after being halted because of the computer issue. According to the FAA, the Notice to Air Missions System provides real-time safety information "about closed runways, equipment outages, and other potential hazards along a flight route or at a location that could affect the flight."
The issue was so serious that the U.S. President had to be informed and despite assurances that there was no evidence the outage was part of a cyberattack at this stage, it was still being investigated by authorities.