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FAA, Boeing and NTSB Reps in Japan for 787 Dreamliner Investigation

Duncan Chard/Bloomberg via Getty Images(TOKYO) -- Representatives from the Federal Aviation Administration, National Transportation Safety Board and Boeing arrived in Japan on Friday to join the investigation into the 787 Dreamliner that made an emergency landing earlier this week.

The lithium-ion battery inside All Nippon Airline's Boeing Dreamliner leaked so much electrolyte, it weighed 10 pounds lighter than normal.  The casing, meanwhile, was so swollen, it expanded nearly an inch.

Now, Japan's Transport Safety Board says it's investigating why the battery overheated and burned, forcing the Dreamliner to make an emergency landing on Wednesday.  

Dozens of 787 planes and thousands of passengers remain grounded until their investigation is completed.

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