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Anthony Foxx

Some Delta systems haven't recovered fully from outage

Delta Air Lines said Tuesday that some computer systems are still working slowly more than a day after an outage crippled the airline and led to more than 1,500 canceled flights.

The system the airline uses to check in and board passengers as well as dispatch its planes is still slow, said Gil West, Delta's chief operating officer.

West offered Delta's most detailed explanation yet of what happened Monday to trigger the global computer outage: A critical piece of equipment failed at the airline's Atlanta headquarters, causing a loss of power, and key systems and equipment did not switch over to backups as designed.

Delta passengers endured hundreds more canceled and...

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