Original story by jiji.com (via Yahoo!) in Japanese: http://headlines.yahoo.co.jp/hl?a=20130602-00000061-jij-soci My blog post in English: http://jal-pak.blogspot.com/2013/06/jal-resumed-787-service-but-more.html Basically there's some pressure built up in the battery container. JAL later found out a tape used for the battery repair was left behind and that seems to be the cause. JL021 from HND-PEK was delayed and switched to 763 as a result. So last time Boeing workers didn't tighten the nut on NH's 787. And presumably the repair is done by Boeing workers on this 787 too. So what's next?