NTSB asks Boeing for history of batteries used before grounding of 787 Dreamliners
TOKYO — U.S. regulators said Wednesday they have asked Chicago-based Boeing Co. to provide a full operating history of lithium-ion batteries used in its grounded 787 Dreamliners after Japan’s All Nippon Airways revealed it had repeatedly replaced the batteries even before overheating problems surfaced.
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NTSB asks Boeing for history of batteries used before grounding of 787 Dreamliners,
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