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Boeing investigation turns to battery maker

January 21, 2013

TOKYO (AP) — Japanese and U.S. investigators began a probe Monday into the maker of the lithium ion batteries used in Boeing’s grounded 787 jets.

Tsutomu Nishijima, a spokesman for GS Yuasa, the battery manufacturer, said investigators visited the company’s headquarters in Kyoto, Japan and that Yuasa was cooperating with the probe.

All 50 of the 787 Dreamliners that Boeing has delivered to airlines were grounded after an overheated battery forced the emergency landing of an All Nippon Airways 787 flight last week in western Japan. Boeing has halted deliveries of new planes until it can address the electrical problems.

Monday’s investigation involved an introductory meeting and factory tour, with deeper studies into product quality and other issues to follow as the probe continues, said Tatsuyuki Shimazu, the chief air worthiness engineer at the Civil Aviation Bureau’s Aviation Safety Department.

Two investigators from the U.S. Federal Aviation Administration and an investigator from Japan’s government were conducting the probe into how the batteries are made and assembled and into any quality issues, he said.

“We are in the midst of collecting information, so as to whether there is a problem or not has not yet been determined,” Shimazu said.

Nishijima of GS Yuasa said he could not comment on details of the investigation.

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Boeing investigation turns to battery maker.

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