Federal aviation officials are tracing a midweek computer debacle to a single employee.
An engineer working on the Notice to all Air Missions system accidentally replaced one file with another during routine scheduled systems maintenance but did not realize the mistake, an official told ABC News.
The outlet did not identify the engineer but said teams are working to make sure the problem isn’t repeated.
The Wednesday morning outage forced an unusual ground stop of air traffic while teams worked to restore the system, which alerts pilots of potential hazards involving runway conditions, severe weather or other matters.