A power outage at Hartsfield-Jackson Atlanta International Airport, the world's busiest, ground operations to a halt on Sunday. The Federal Aviation Administration ordered a ground stop on flights, meaning planes are held at their departure points, the airport said. Delta Air Lines diverted some Atlanta-bound flights and expected delays as a result of the loss of power, a spokesman said. The airline is based in Atlanta and the airport is its main hub. Southwest Airlines cancelled the remainder of its flights to and from the Atlanta airport on Sunday. U.S. Customs and Border Protection said some international flights were sent to other airports. It was not immediately clear what caused the outage, but Georgia Power and the airport said they were investigating.
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