kaz3g makes some good points re: privacy and not punishing the good people with the bad, but what is the alternative and what is fair?
Currently if an aircraft lands at an airfield where charges apply, then 1 of 3 things happen;
1. It is recorded by ATC/Ground and if VH then an invoice sent to the Reg Op/Owner. If RA-Aus then (I assume) an invoice sent to RA-Aus who then pass it on.
2. AVData record the call-sign and if VH then an invoice sent to Reg Op/Owner or if RA-Aus to RA-Aus who then pass it on.
3. The Airfield owner (if the aircraft doesn't do a full stop) observes or records the call-sign and if VH then sends an invoice or if RA-Aus sends it to RA-Aus who passes it on.
If RA-Aus have decided NOT to pass the invoice on what are the options? If the airport decides not to charge RA-Aus then that is not fair for VH. If the airports only option is to refer it to the police then that is tying up tax-payer resources which is not fair on everybody.
If an airport could register with RA-Aus to receive registration data for the purpose of billing then that would solve the problem (Can councils/Car park owners etc get registration details from Motor Reg or the Police?).
Of course the simple answer is that if everybody did the right thing, checked ERSA to see if AD charges apply, call the airport for details on how to pay etc. then there would be no problem, but as usual a very small minority do end up spoiling it for the rest of us no matter how hard we try to not punish the innocent.