Federal investigators said Thursday they were still far from determining what caused a battery fire in a Dreamliner in Boston earlier this month – one of two battery-related incidents that led to the plane’s grounding by regulators worldwide – ending any hope that 787s would be flying in the near future. The National Transportation Safety Board said that the lithium-ion battery that caught fire in a parked 787 at Logan International Airport showed signs of short-circuiting and of a “thermal runaway,” a chemical reaction that begins to overheat the battery and speeds up as the temperature increases. Unlike the FAA, the NTSB does not have regulatory powers but its public recommendations can weigh heavily on air safety policy. The FAA has already made clear that the plane cannot fly again until the cause is determined and the problem fixed. Meanwhile, Boeing said Thursday it has formed teams consisting of hundreds of engineering and technical experts who are working around the clock to resolve the issue and return the 787 fleet to flight status. (Image Credit: Boeing)

More Info > (New York Times)