The FAA estimates that the cost to install new lithium-ion batteries, new enclosures, venting systems and related safety hardware on United Airlines’ six Boeing 787-8s will total close to $2.8 million. That estimate is contained in the FAA’s airworthiness directive (AD) to be published in the April 26 Federal Register that supersedes the current 787-8 AD. The new AD takes into account the upgraded battery systems, enclosures and safety equipment that Boeing and its suppliers devised in ...


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