US aviation administration resumes flights after grounding

Résumé détaillé

The US Federal Aviation Administration says flights can resume after it issued a national ground stop "due to extraordinary circumstance and reasons for safety".

Flights in the United States have resumed after the US Federal Aviation Administration earlier issued a national ground stop due to safety.

It was only the second time flights have been grounded in the US since the September 11 terror attacks in 2001.

The grounding had been called due to a communication issue affecting 22 regional air traffic control centres.

The US Federal Aviation Administration (FAA) says flights can now resume, after it earlier issued a national ground stop "due to extraordinary circumstance and reasons for safety".

US Transportation Secretary Sean Duffy confirmed the ground stop was due to a communication issue affecting all air route traffic control centres.

Mr Duffy said there was a communications issue affecting 22 regional air traffic control centres that direct planes en route between airports nationwide.

US Homeland Security Secretary Markwayne Mullin said there was no indication yet of a nefarious act behind the communication issue.

"It's just a telecommunications outage … everybody's safe. There's no reason to be concerned about your loved ones if they're flying."

Mr Mullin said investigators would look at whether there was any link to the FAA's nationwide rollout of a new artificial intelligence system to help identify problems and reroute planes.

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