Boeing: We May Never Know Cause of 787 Battery Problems - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

Boeing: We May Never Know Cause of 787 Battery Problems

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SEATTLE, Wash. - A senior engineer with Boeing says the company may never know what caused battery problems that grounded the 787 Dreamliners.

The engineering leader of the 787 says evidence, that would have shown the root cause of the smoldering batteries on two different 787s, was destroyed by heat. 

Boeing now says however, that the new redesigned battery system eliminates all potential root causes of the battery fire. The U.S. Federal Aviation Administration has approved Boeing's redesigned battery system, which the company says sharply reduces the risk of fire.

Boeing grounded the 787s after incidents with smoldering batteries on two different planes back in January.

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