I note that there is still no response from anyone regarding my question about false positives from Sudafed or Codral use or being over the limit of 0.02 percent alcohol (but under the legal driving limit of 0.05 percent) when going airside for the purpose of retrieving sunglasses or checking the security of a tethered aircraft (as is required by my contract of aircraft hire).
I therefore assume that the legality or otherwise of such activities will be decided by the courts and I hope CASA has budgeted some hundreds of thousands of dollars in legal costs to decide these matters, since they seem incapable or resolving these obvious inconsistencies in any efficient manner in advance.
I'm also interested in whether suppliers delivering goods or services airside are fair game for testers as well if they airside
P.S. The situation I'm describing is not hypothetical as anyone who has done any air touring will tell you.