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U.S. FAA says initial review shows outage sparked by procedural failure


Passengers exit a bus at Terminal 2 as they wait for the resumption of flights at O’Hare International Airport after the Federal Aviation Administration (FAA) ordered airlines to suspend all domestic departures due to a disruption in the system, in Chicago, Illinois, U.S., January 11, 2023. REUTERS/Jim Vondruska/File Photo

The Federal Aviation Administration (FAA) said its preliminary analysis of a computer system outage on Wednesday that led to a 90-minute nationwide ground stop and disrupted more than 11,000 flights was prompted by a procedural failure.

“The agency determined that a data file was damaged by personnel who failed to follow procedures. The system is functioning properly and cancellations today were below one percent,” the FAA said in an emailed statement late on Thursday.