The computer glitch that threatened to cause hours of delays to flights out of London on Friday has been fixed, the U.K.'s air-traffic control management body has said. "Following a technical failure at Swanwick, the system has been restored and we are in the process of returning to normal operations," NATS said in a post to its website. Earlier, the failure in the air-traffic control system led to restrictions on air traffic in the U.K., and the European air-traffic monitor Eurocontrol said that the airspace in London had been closed. The disruption, which threatened to spread across the U.K., lasted for about an hour. Both Heathrow and Gatwick airports said there had been an impact on departures.
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