What makes you think that the airport funds ticket sales, check in and baggage handling staff. Those are airline costs that your ticket directly pays for. In fact, if the security equipment is there to service just one airline's flights, the airline may well have paid for it all themselves.
Vag is correct. This is an Aviation Security issue, not a CASA one. It has nothing to do with the Civil Aviation Act. From CASA's website:
The Aviation Security Regulations 2005 fall under the jurisdiction of the Department of Infrastructure, Regional Development and Cities Australian.
The Aviation Security Regulations 2005 can be found on the Comlaw web site.
If you have a comment to make regarding the regulations you should contact:
The Aviation Security Branch
Department of Infrastructure, Regional Development and Cities
GPO Box 594
CANBERRA ACT 2601
AUSTRALIA
Email [email protected]
ie. IT'S NOT US!!!