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A check-in system malfunction at Incheon International Airport on Friday (Oct. 30) is causing major boarding delays, with passengers stuck in long queues at departure halls. The disruption began around 4:30 a.m. in an airline network connecting ticketing systems, according to the Incheon International Airport Corporation and reports from Yonhap, KBS World, and the Korea Times. The outage has paralyzed check-in procedures across departure areas, leading to significant delays in passenger processing. Korean media, including Kyunghyang Shinmun, report that passengers are growing anxious ('발동동') as the network error persists, though no specific resolution timeline has been provided.