To arbite
The Aviation Australia exams do not count towards CASA Basics. I should know as I have done AA course and I would have resit all the CASA exams if I wanted a CASA license (and part of me does but $$$) as the CAO 100.66 / Part 66 license is only going to be use to organisations like Qantas, Jetstar, Virgin and maybe Tiger. For the vast bulk of MROs in Australia the existing system seems to be ok.