Flights delayed at Atlanta airport after power outage

(Reuters) - Flights were delayed at Hartsfield-Jackson Atlanta International Airport on Sunday after a partial power outage, leaving passengers at the world's busiest airport stranded in dimly lit terminals or in aircraft idling on tarmacs.The partial shutdown at the start of one of the busiest travel weeks of the year forced the Federal Aviation Administration to hold back flights bound for Atlanta.The cause of the outage, which occurred just after 1 p.m. (1800 GMT), was not immediately known,