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All Nippon Airways Dreamliner experiences minor electrical problem on test flight

An All Nippon Airways Boeing 787 Dreamliner equipped with Boeing’s updated lithium ion battery system experienced a minor electrical issue during a test flight earlier this month, Flightglobal.com reports.

The problem was traced to a loose fastener on an electrical distribution panel, not the new battery or its charging system.

The issue happened on a May 4 proving flight between Tokyo’s Haneda Airport and Chitose.  ANA is extensively testing the Dreamliners’ modified electrical systems before returning its 18 Dreamliners to commercial operations.

The airliner was carrying only a pilot and a co-pilot on the test flight.  The crew was alerted

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