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The US Federal Aviation Administration grounded all departing flights nationwide on November 13 after a communications failure hit air traffic control centers, the first nationwide stop since January 2023. Authorities said there were no signs of a cyberattack and are investigating the cause, while Reuters reported the FAA ordered flights to hold on the ground until further notice. Korea Times reports the incident is considered extremely serious, noting that nationwide flight suspensions have occurred only in rare cases like the 9/11 terrorist attacks.