Originally Posted by
nancypants
I wonder if it’s a matter of policy? JAL was the first airline a worked for (long story and a long time ago, i’m not sure I have any useful contacts there now), I might see if I can “reach out” and get some clarity on that part
I've just looked into it and apparently it's total no, across all Japanese airlines, apparently. Not even on the ground. That explains why I have never seen it happen.
There are maintenance facility tours that JL run, though (might only be in Japanese).
https://www.jal.co.jp/kengaku/ (sorry, I can't find the link in English)