By Will Feuer

Shares of U.S. airlines fell in premarket trading after the Federal Aviation Administration said it suffered an outage of its system that alerts pilots and crew to advisories and information for flights.

United Airlines Holdings Inc. stock fell more than 1%, while shares of American Airlines Group Inc. dropped almost 2%. Shares of Southwest Airlines Co. fell almost 3%. Delta Air Lines Inc. stock fell less than 1%.

The FAA, which oversees and manages the aviation network in the U.S., said it is working to restore its so-called Notice to Air Missions System.

"Operations across the National Airspace System are affected," the FAA press office said in a statement. It said it was currently performing final checks to get the system back up and running.

Passengers on social media were reporting delays early Wednesday, citing the outage, but the scale of the impact wasn't immediately clear. Some U.S.-bound flights from international destinations like London and Tokyo were still taking off.

Nearly 1,200 flights within, into, or out of the U.S. were delayed Wednesday as of 6:44 a.m. ET, according to flight-tracking site FlightAware. More than 1,300 others had been canceled, the site showed.

Write to Will Feuer at Will.Feuer@wsj.com

(END) Dow Jones Newswires

January 11, 2023 07:05 ET (12:05 GMT)

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