Associated Press
FILE - In this Thursday, Jan. 17, 2013 photo provided by the Japan Transport Safety Board shows the distorted main lithium-ion battery, left, and an undamaged auxiliary battery of the All Nippon Airways' Boeing 787 which made an emergency landing on Wednesday, Jan. 16, 2013 at Takamatsu airport in Takamatsu, western Japan. Federal Aviation Administration and Boeing officials were scheduled to testify at a two-day hearing of the National Transportation Safety Board beginning Tuesday April 23, 2013. The board is asking how problems with the aircraft's lithium-ion battery system that led to a fire aboard one plane and smoke in another escaped the notice of regulators and company officials who certified the plane's safety. (AP Photo/Japan Transport Safety Board, File) EDITORIAL USE ONLY, NO SALES

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