On 2 August 2018 at 18:15, Richard Pope wrote: > James, Ryan, > > This is what happen to a 777 Dreamliner a few years ago. A number of Dreamliner Lithium Ion batteries suffered catastrophic failures= .. > It brought the > plane down. That terminology is excessively loose when discussing a subject of this magnitude and importance. No Dreamliners crashed and afair no lives were lost as a result of these failures. Both of those outcomes could have resulted, but neither did. All Boeing 787 "Dreamliners" were grounded in January 2013 as a result of these 'problems'. Battery problems were known of for about-at-least 9 months before the regulatory grounding. There are a very large number of related articles and reports on-web, but the following is a useful start: https://www.google.co.nz/search?q=3DBoeing+Battery+Was+a+Concern+Before+Fai= lure&oq=3DBoeing+Battery+Was+a+Concern+Before+Failure&aqs=3Dchrome..69i57j6= 9i60.1575j0j4&sourceid=3Dchrome&ie=3DUTF-8 If you find much of what is said in this January 2013 article to be credible then you may feel less confident in Boeing's veracity or interest in customer safety over "bottom line" in future (regardless of how confident you were previously). https://www.nytimes.com/2013/01/30/business/boeing-aware-of-battery-ills-be= fore-the-fires.html?partner=3Drss&emc=3Drss&smid=3Dtw-nytimes&_r=3D0 I'd not want to trust my safety to a company that behaved in the manner described. But, I will continue to do so :-) - hopefully for many years to come. I'd assume that the others are like unto it. For interest - the batteries were /are? made by Yuasa. __________________________________ Since then Boeing has changed the design of the battery and > installed it in a stronger containment system that has an external vent > system. > Redesigned battery - maybe. Better containment - yes. Venting - dunno (but Googlabet does). Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .