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Old Jan 30, 2013, 07:13 AM
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US investigators stumped by battery fires

US investigators have failed to find the cause of recent 787 battery fires despite completing the main phase of their investigation. The National Transportation Safety Board (NTSB) will now move to a “microscopic” examination of chemicals and elements within the battery, which was produced by Japanese manufacturer GS Yuasa. Japanese investigators have similarly not found a cause for the second battery fire found onboard a JAL 787 on January 16. Japan’s transport ministry official, Shigeru Takano, said: “We have found no major quality or technical problem… We are looking into affiliated parts makers.” Meanwhile, the NTSB will focus on the electrical system that monitors the battery. The 787 Dreamliner will continue to be grounded as they do so.
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