Ironpot,
Now; it is perfectly possible to aviate around our great nation without an ASIC - some major airfields do not require one - e.g. Jandakot, Camden, Archerfield etc. But a lot of tiny airfields do require you to display your ASIC e.g. Coober Pedy, Bendigo, Quilpie etc. Sometimes it's about AVGAS availability - do you need? ERSA is your friend. If you look up an airfield and it states in Remarks that āThis AD is a Security Controlled Airportā then you should have an ASIC when you head that way.
A quick check of ERSA indicates Archerfield does fall within this category of requiring the ASIC.
Same for Coober Pedy, Bendigo & Quilpie.
Oops