Cause of catastrophic ground stop revealed as transportation secretary blames archaic equipment found in 'remote location' that was running country's entire airspace

Detailed summary

Secretary Sean Duffy revealed a contractor was performing routine maitenance at a 'remote location' when the telecommunications issue arose on Friday afternoon.

Published: 17:10 GMT, 14 November 2026 | Updated: 18:04 GMT, 14 November 2026

Trump's transportation secretary has blamed archaic equipment found in a 'remote location' as the preliminary cause of the historic ground stop that halted the nation's air travel for hours.

Department of Transportation Chief Sean Duffy told reporters at a press conference at the agency's headquarters on Saturday that a contractor, L3 Harris, was replacing old technology at a 'remote location' when the air traffic control communications issue began.

Duffy said that a contractor was doing maintenance at at least one of four remote Federal Aviation Administration (FAA) locations and was switching lines from old copper wire to fiber before communications stalled.

He called L3 Harris the department's 'legacy provider,' accusing the contractor of failing to 'meet the moment,' causing the outage.

'What we’re working to determine was whether we had incompetence – meaning, was it user error or installation error from L3 Harris — or did they install a faulty router? We haven’t determined what the fault was. Was it the router? Or were they not doing great work for us at L3 Harris?' he continued.

Duffy said the wire being replaced was so old it was being discontinued, prompting the routine maintenance.

He explained that as the wire was being replaced from copper to fiber, it flooded other routers and disrupted the radar feeds, making it difficult for air traffic control to communicate.

Duffy reiterated that officials do not believe the incident resulted from a cyberattack. He added that once the issue was detected at the FAA's remote location, communications came back.

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