Archerfield, Jandakot, Parafield are all classified as Security Controlled however are exempt from the ASIC requirement due to no RPT services. Moorabbin has certain sections that require ASIC.
I believe the reason the GAAP fields were designated security controlled even though they had no RPT was to receive funding from the former DOTARS for the construction of fences and other physical security measures. We should just be thankful that those airports have been exempted from the ASIC requirement.
It becomes a bit of a pain the rear though when numb nut pilots arrive at a security controlled airport after spending all their time flying in and out of Bankstown or Jandakot. I really feel that my intelligence is being insulted when they deny any knowledge of the requirement to have an ASIC. Makes me wonder what else they don't know.
More info
www.casa.gov.au/fcl/licence/airport.htm