In the Boeing 787 Dreamliner's first year of service, at least four aircraft suffered from electrical system problems stemming from its lithium-ion batteries. Although teething problems are common within the first year of a new aircraft design's life, after a number of incidents including an electrical fire aboard an All Nippon Airways 787, and a similar fire found by maintenance workers on a landed Japan Airlines 787 at Boston's Logan International Airport, the United States Federal Aviation Administration (FAA) ordered a review into the design and manufacture of the Boeing 787 Dreamliner, following five incidents in five days involving the aircraft, mostly involved with problems with the batteries and electrical systems. This was followed with a full grounding of the entire Boeing 787 fleet, the first such grounding since that of the McDonnell Douglas DC-10 in 1979. The plane has had two major battery thermal runaway events in 52,000 flight hours, which was substantially less than the 10 million flight hours predicted by Boeing, neither of which were contained in a safe manner.
The National Transportation Safety Board released a report on December 1, 2014, and assigned blame to several groups:
GS Yuasa of Japan, for battery manufacturing methods that could introduce defects not caught by inspection
Boeing’s engineers, who failed to consider and test for worst-case battery failures
The Federal Aviation Administration, who failed to recognize the potential hazard and did not require proper tests as part of its certification process