On Friday afternoon, days after expanding use of an AI tool, the Federal Aviation Administration issued a nationwide ground stop, halting departures from all US airports. Secretary of Transportation Sean Duffy announced the ground stop on X, citing a “communication issue impacting all Air Route Traffic Control Centers.” Duffy promised updates as more information is known and said FAA staff were troubleshooting the problem. Department of Homeland Security Secretary Markwayne Mullin said that the ground stop was not prompted by a security threat.
Out of an abundance of caution, we have grounded all of the flights,” Mullin said. This is only the third nationwide ground stop issued by the FAA. The first, and most memorable, came during the attacks of September 11, 2001, when the FAA stopped all civilian departures nationwide and subsequently ordered all airborne aircraft to land.
Commercial flights did not take off again until September 13. Flights were also grounded for less than two hours the morning of January 11, 2023, after its Notice to Air Missions system suffered an outage. Unfortunately for travelers, based on what is known so far, this is likely to be a lengthy ground stop.
Airlines have already canceled flights scheduled to leave later Friday, and American Airlines warned that disruptions are expected for the rest of the day.
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