Topic dossier Developing

Nationwide US Ground Stop

The Federal Aviation Administration ordered a nationwide ground stop at all US airports on Friday over a communication issue affecting all Air Route Traffic Control Centers, halting departures for hours. The FAA lifted the stop later that day, and Transportation Secretary Sean Duffy said US airspace was "opened up." Officials said the disruption was not a cyberattack or a Microsoft outage and blamed old, overloaded hardware.

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