The FAA halted all departures from US airports for more than four hours on Friday. Transportation Secretary Sean Duffy blamed overloaded routers in a decades-old communications network. Officials…

The FAA halted all departures from US airports for more than four hours on Friday. Transportation Secretary Sean Duffy blamed overloaded routers in a decades-old communications network. Officials see no sign of a cyberattack so far and rule out a link to the Microsoft outage. Nearly 10,000 flights have been canceled through Saturday.

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This is a source-linked briefing. Read the original report from Notebookcheck .