If the Council have communicated with CASA, then the silo's within CASA still exist, as there was a SQld RAPAC meeting a week ago and the matter was not on the agenda nor raised by anyone presnet including CASA. The CASA RAPAC rep is now looking into it I understand. As was indicated previously, the aerodrome operator (Council in this case) have no authority on the airspace and operations at the the aerodrome unless CASA approval is provided and it is listed in ERSA. Any changes as outlined would have to be justified with incident reports and some form of safety case.