Here is the link for those who are interested in the actual situation rather than what a mate down the pub told them about a friend who....
http://law.ato.gov.au/atolaw/view.ht.../NAT/ATO/00001
An interesting question is what happens when a person who agreed to commence a 150 hour integrated (yeah right) course and so is GST exempt then neglects to go beyond a PPL? How long until they have ceased training? Do they have a GST liability or does the supplier?