The FAA certified the 787 battery system even though lithium ion batteries are more susceptible to catching fire when they overheat or short-circuit than other types of batteries.

NPR: US Officials Defend Handling Of Boeing 787 Mishaps

The Investigative Committee added that it was examining other theories such as a short circuit or arson.

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Is it dead on arrival, or does it short-circuit what you expect to happen in the next 24, 36 hours?

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The FAA gave Boeing permission last month to test the revamped system, which includes additional insulation around each of the battery's eight cells to prevent a short circuit or fire in one of the cells from spreading to the others.

NPR: FAA Approves Resumption Of Boeing 787 Flights

But the code can mean the part is bad, or that there's a short circuit somewhere else in the car.

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Undoubtedly, they do not want to short-circuit the political process by creating a self-fulfilling prophecy or by driving a backlash.

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