The 787 Dreamliner has been plagued with battery woes since its early days, to the point where the Federal Aviation Administration kept it from flying the skies in the past. And while those technical difficulties are apparently taken care of, Boeing's flagship airliner could be on the way to more trouble soon. According to the FAA, there's a software bug in the 787 Dreamliner that can cause its electrical system to fail and, as a result, lead to "loss of control" of the plane. But why? The FAA says this is triggered by the aircraft's electrical generators, which could give out if they have been powered on continuously for over eight months.