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U.S. Airlines Working Through Delays After Flight-Data Snag

  • Southwest says about a quarter of operations are affected
  • FAA cites problems with weight information needed for takeoff
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U.S. airlines were working their way through hundreds of delayed flights Monday after a data disruption temporarily suspended takeoffs across the country.

Southwest Airlines Co. was particularly hard hit, as the carrier voluntarily grounded all its planes for 40 minutes during the technology glitch at AeroData Inc., a provider of aircraft weight and balance information. Delays affected 992 of Southwest’s flights, according to data tracker FlightAware.com, representing about a quarter of the airline’s 4,000 daily flights.