Well the Coroner's Report says:
"4. The registration of the aeroplane and Mr Farrell's licence to fly were regulated, in the first instance, by Recreational Aviation Australia (RAAus)
5. RAAus is an approved Self-Administered .......as written above.
If we then start with the SAAO Deeds of Agreement, the first one I found was with GFA 2015/16 which spells out on Page 10, Para 9
"9. Indemnity 9.1 The GFA indemnifies CASA, its officers, employees and contractors against any liability, loss, damage, cost (including the cost of any settlement and legal costs and expenses on a solicitor and own client basis), compensation or expense arising out of or in any way in connection with: (a) a default or any unlawful, willful or negligent act or omission on the part of the GFA, its officers, employees, agents or subcontractors in connection with this Deed; or (b) any action, claim, dispute, suit or proceeding brought by any third party in respect of any use, infringement or alleged infringement of that third party's Intellectual Property Rights or Moral Rights in connection with this Deed. 9.2 The GFA's liability to indemnify CASA under clause 9.1 will be reduced proportionally to the extent that any act or omission of CASA or its employees or Agents contributed to the loss or liability."
These Deeds of Agreement haove now been replaced by Part 103 and Part 149 of the Civil Aviation Safety Regulations 1998 (CASR 199) so anyone interested will be able to see exactly what the current wording is by going onto the CASA Website.