In Boeing 787 battery probe, x-rays may offer clues to past incidents

File photograph of an undamaged battery used in the Boeing 787 Dreamliner jet provided by NTSBBy Alwyn Scott and Tim Kelly TOKYO/SEATTLE (Reuters) – Investigators in Japan are studying x-ray images of a lithium-ion battery from when it left the factory, hoping these may shed some light on why it appeared to overheat on a Boeing 787 Dreamliner jet earlier this week. They will be looking for possible anomalies in the battery, which is made by Japanese firm GS Yuasa, and hope this could also help them resolve two similar battery incidents on separate 787 planes a year ago. The battery damaged on a Japan Airlines (JAL) Dreamliner this week could provide more clues to investigators if it has survived in better condition than the ones scorched in incidents on a JAL 787 in Boston last year and on an ANA Holdings 787 in Japan just a few days later. GS Yuasa scans the eight-cell batteries with an x-ray-like system before they are shipped, and the images are checked for a list of potential problems to ensure the batteries are not flawed, said John Goglia, a former National Transportation Safety Board (NTSB) member.

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