There is only one recognised international competition, and that is the IJMC jet World Masters. All countries have there own versions of what is required for competing in there own country, but if you are to go international, then I would get your team member(s) to be proficient at the IJMC level.
steve Collins has supplied the IJMC address for you in his reply.
if I can be of any help, please don't hesitate to get in touch
Dave Burns
IJMC rep Australia.
PS The next Jet World Masters will be in Hungary in 2005 at the start of August. The next IJMC plenary meeting is January 15th, 2005.