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NTSB: 787 battery approval should be reconsidered

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WASHINGTON (AP) — The government should reassess its safety approval of the Boeing 787's lithium ion batteries, the nation's top accident investigator said Thursday, casting doubt on whether the airliner's troubles can be remedied quickly. If Boeing is forced to switch to a different type of battery, it would add weight to the plane — and fuel efficiency is one of the 787's main selling...