DALLAS (AP) – Delta Air Lines says some computer systems were still working slowly more than a day after an outage crippled the airline and led to more than 1,500 cancelled flights. Chief Operating Officer Gil West said that the airline was seeing slowness in a system used to check in and board passengers and dispatch planes. West gave the airline’s most detailed description yet of what happened Monday to trigger a global outage of its computer systems. He said a piece of power equipment failed, causing a loss of power. Key systems and equipment then did not switch over to backups. Delta canceled more than 1,000 flights Monday and 680 by late Tuesday afternoon.
