LONDON: At least 16 flights to and from London’s Heathrow Airport were canceled on Thursday, a day after technical problems with Britain’s air traffic control system caused widespread disruption across the country’s airports. National Air Traffic Services (NATS), which provides air traffic control services for planes flying in UK airspace and the eastern part of the North Atlantic, said on Wednesday its systems were fully operational with capacity returning to normal after it switched to a back-up system.

The disruptions came after a company that provides air traffic control services in Britain said it had experienced a “technical issue.”

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