Yeah, I think the current limit is 25%, but there are no doubt some extralegal ways around that as well (check out the chinese-chinese-foreign jv structures that foreign telcos used during the late 90s OR CX's capitalization structure that gives Swire control in spite of its dilluted position). It's a shame that the aviation sector wasn't better addressed during ~2001 WTO. I would guess the reason that member countries didn't push harder in this arena has to do with the fact that many them are equally protectionistic.