The Japan Transport Safety Board (JTSB) has concluded in a draft report that extreme cold most likely caused a lithium-ion battery on an All Nippon Airways Boeing 787 to malfunction in January 2013, The Asahi Shimbun newspaper reported. The board plans to release a final report in September or later.
The next time you fly, soak a terrycloth hand towel so that it’s dripping wet and hang it up on the flight deck. Then fly a leg that’s at least an hour-and-a-half long. At the end of that time, the towel will be bone dry, the water absorbed by the ultra-low humidity of the cockpit and cabin environment.
The FAA has approved eight valve-regulated sealed lead acid batteries
under Technical Standard Order C173 for Concorde Battery.
The TSO-approved models are Concorde’s RG-121 Series and RG-122 Series, emergency batteries for lighting, standby, avionics, fadec and backup power. Parts conforming to TSO C173 are approved for design and production.