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US airplane chaos ‘may be linked to new AI system’ as 7k flights cancelled

More than 7,000 flights have been cancelled after the FAA suspended departures at all US airports in a rare ‘nationwide ground stop’ following an air traffic communications failure

FILE - An airplane flies past the air traffic control tower at Phoenix Sky Harbor International Airport on Nov. 8, 2025, in Phoenix. (AP Photo/Ross D. Franklin, File)

Flights have been suspended at airports across the US

Flights have been suspended at airports across the US after a major aviation communications problem triggered nationwide chaos, with around 7,000 planes cancelled and travellers left stranded. It has since been revealed that the carnage may be linked to a new AI system.

The Federal Aviation Administration (FAA) said the dramatic move was introduced due to “extraordinary circumstances and for reasons of safety”, after the organisation previously reported it was experiencing air traffic control problems.

US Secretary of the Department of Transportation Sean Duffy confirmed the order was issued “following a communication issue impacting all Air Route Traffic Control Centers”, signalling the scale of the outage across the country.

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An Alaska Airlines Boeing 737 MAX 9 plane taxis near the Air Traffic Control (ATC) tower at Austin-Bergstrom International Airport (AUS) on September 12. 2026 in Austin, Texas

Aound 7,000 flights have been cancelled (Image: Al Drago/Getty Images)

The disruption has spilled over internationally too, with several flights from the UK to the US have been scrapped amid the turmoil.

A nationwide ground stop in the US is extremely rare.

The last time it happened was January 2023, when a pilot notification system failed, and before that the previous comparable event was the 9/11 attacks.

As the shutdown unfolded, claims began circulating that the outage may be linked to the FAA expanding use of an $875 million (£700 million) artificiaI intelligence tool called SMART.

People wait in long TSA security lines at John F. Kennedy International Airport (JFK) in the Queens borough of New York, Monday, March 23, 2026. (AP Photo/Ryan Murphy)

Kennedy International Airport (Image: AP)

FAA fact sheets describe SMART as a system that combines “weather patterns, flight paths, traffic flow and controller staffing metrics” into a single interface designed to support air traffic controllers.

Journalist Paris Schutz highlighted the speculation in a post on X, writing: “NEW: according to House Aviation Subcomittee member Congressman @Chuy4Congress – the speculation right now is the FAA outage could be related to the rollout of the new SMART system – a comprehensive AI-involved system that incorporates weather, traffic patterns, arrival/departure info into one interface for Air traffic controllers.

“This is not confirmed, but being talked about right now by experts in the industry.”

There is no confirmation so far that SMART played any role in the disruption, but the timeline has fuelled questions as officials work to restore normal service and passengers face ongoing delays and cancellations.

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