The Wall Street Journal: Delta now blames failed ‘switchgear’ for massive outage

Delta Air Lines Inc. said a malfunction in one part of the electrical system that powers computers at its Atlanta headquarters caused the grounding of 1,000 flights Monday and continued to roil travel plans a day later.

In the first detailed public explanation of the outage, Gil West, the chief operating officer, said in a statement Tuesday that a “power control module” at the airline’s technology center malfunctioned early Monday morning, “causing a surge to the transformer and a loss of power.”

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Power was quickly restored, but some critical systems and equipment didn’t switch over to backups, causing “instability,” he said.

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