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Wikipedia's B787 article states that:

The causes of the battery failures are still unknown. There is still concern that because the root cause of the fires were not identified, the solutions put in place by Boeing will not be able to cover the full range of possible failure modes.

But 787 was still cleared for flight after it fixed the "Fire Propagation" problem by correctly packaging its batteries in a fire resistant material.

My question is :

  1. What is the actual cause of such Battery problems? (If it's known?)
  2. If Boeing is not able to resolve the root cause of the fires (according to Wikipedia), then is it safe for the Dreamliner to be allowed to fly?
    Because what they have done to resolve the problem does not appear to be a permanent solution, but more of a temporary fix.
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    $\begingroup$ The cause is not confirmed, but the containment measures taken are satisfactory and ensure safety in case of battery fire. $\endgroup$
    – mins
    Commented Jun 17, 2015 at 8:36
  • $\begingroup$ I don't see what the question is. We know that the cause is unknown; the regulatory authorities feel that the containment measures make hte plane safe enough. What is left? $\endgroup$ Commented Jun 25, 2015 at 8:33
  • $\begingroup$ I firmly believe that this is an answerable question, and we do know what caused fires in batteries. See this question, and then this link $\endgroup$
    – anshabhi
    Commented Jun 27, 2015 at 13:59
  • $\begingroup$ This could be part of a more general problem with modern batteries catching fire. $\endgroup$
    – user7241
    Commented Jun 27, 2015 at 20:10
  • $\begingroup$ @anshabi Neither the question or the article you point to states conclusive proof of cause of the battery failures. This is an unanswerable question, for now. $\endgroup$
    – CGCampbell
    Commented Jun 28, 2015 at 13:20

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