Aircraft
NTSB Cites Deficient Safety Assessment by Boeing in 787 Fire
Safety Board issues 18 separate recommendations
The FAA issued an airworthiness directive in April 2013 that mandated modifications to Boeing 787 batteries and resulted in a lengthy grounding of the world's fleet. (Photo: Flickr: Creative Commons (BY-SA) by valentin hintikka)
The FAA issued an airworthiness directive in April 2013 that mandated modifications to Boeing 787 batteries and resulted in a lengthy grounding of the world's fleet. (Photo: Flickr: Creative Commons (BY-SA) by valentin hintikka)

Boeing’s incorrect assumptions about the effects of a short circuit in the main ship battery of the 787 and insufficient guidance for manufacturers to use in determining and justifying such “key” assumptions in safety assessments contributed to the January 7, 2013 battery fire aboard a parked Japan Airlines Dreamliner at Boston Logan Airport, according to an aircraft incident report issued by the U.S. National Transportation Safety Board on Monday.