TOKYO — U.S. investigators said Wednesday they asked Boeing Co. to provide a full operating history of lithium-ion batteries used in its grounded 787 Dreamliners as Japan's All Nippon Airways revealed it had repeatedly replaced the batteries even before overheating problems surfaced.
U.S. investigators ask Boeing for battery history
Wednesday, January 30, 2013 | 4:05 p.m. CST;
updated 7:58 p.m. CST, Wednesday, January 30, 2013
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