Boeing Faulted by Norwegian Air on 787 Short Circuit

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Boeing Co. engineers lacked the expertise needed to diagnose a fault on a 787 Dreamliner, causing them to short-circuit the marquee plane and leave its passengers stranded, operator Norwegian Air Shuttle ASA said.

The twin-engine jet, Boeing’s newest model, suffered what proved to be an erroneous fault warning in New York on Dec. 29, then was grounded for three days after the maintenance blunder, Norwegian Air Chief Executive Officer Bjoern Kjos said.