Article updated: 2/6/2013 11:34 AM

NTSB: 787 Dreamliner batteries not necessarily unsafe

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A line of Boeing 787 jets are parked nose-to-tail at Paine Field in Everett, Wash.

Associated Press

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The use of lithium ion batteries to power aircraft systems isn't necessarily unsafe despite a battery fire in one Boeing 787 Dreamliner and smoke in another, but manufacturers need to build in reliable safeguards, the nation's top aviation safety investigator said Wednesday. National Transportation Safety Board Chairman Deborah Hersman said she doesn't want to "categorically" rule out the use of lithium ion batteries to power aircraft systems.
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