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Inquiry finds drop in jet’s voltage

Battery not overcharged; Boeing 787s still grounded

Posted: January 24, 2013 at 3:30 a.m.

An All Nippon Airways Boeing 787 sits on the tarmac last week at an airport in Tokyo, after all 787 Dreamliners were grounded so that problems with their ion batteries could be investigated.

A lithium ion battery on a Boeing 787 that overheated during an All Nippon Airways flight earlier this month experienced a sudden drop in voltage and was not overcharged as previously thought was possible, Japan’s transport safety agency said Wednesday.

This story is only available from our archives.

Business, Pages 27 on 01/24/2013

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