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http://www.flightglobal.com/news/articl ... ry-404125/The Japan Transport Safety Board (JTSB) has released findings from an investigation into the 16 January 2013 main battery incident aboard an All Nippon Airways Boeing 787-8 aircraft, which resulted in an emergency landing and contributed to a global grounding of the type.
While the 100-page investigation report does not identify a specific cause for the lithium ion battery failure aboard ANA flight 692,
it provides probable causes and has recommendations for both the FAA and Boeing.
The ANA incident occurred while the aircraft bearing registration JA804A was operating the Yamaguchi Ube-Tokyo route.
After the flight crew received several battery warnings and smelled fumes in the cockpit, they made an emergency landing at Takamatsu, where all 129 passengers and eight crew evacuated via the aircraft’s slides.
The ANA incident followed another lithium ion battery failure on 11 January 2013 aboard a Japan Airlines 787 parked at Boston’s Logan International Airport.
The two incidents resulted in a four-month grounding of the global 787-8 fleet in the beginning of 2013.
Echoing comments from both the NTSB and Boeing itself,
the JTSB stated that the airframer’s original testing regimen for the battery was insufficient, mainly because it did not adequately simulate a realistic operational scenario.