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The US aviation shutdown, triggered by a communications failure at air traffic control centers on Friday, has now disrupted more than 17,000 flights over three days, according to Chosun Ilbo. The outage, which grounded all departing flights nationwide, was the longest halt since the September 11, 2001 attacks. Officials blamed the failure on a router installed by contractor L3Harris and on network cable replacement causing communication overload, with no link to terrorism or AI, Maeil Business Newspaper reports. The FAA predicted air travel would not return to normal until late Sunday, and Korean Air said US-bound flights from South Korea have resumed after the ground stop was lifted, KBS World reports. Korean media highlight the scale of the disruption, with Dong-A Ilbo noting over 15,000 cancellations by Saturday and delays at Incheon International Airport for flights to major US cities. The Trump administration has proposed $50 billion (about 70 trillion won) to Congress in response, Chosun Ilbo reports.