JT,
As usual, I lacked the necessary precision. CAO 101.5/6 set out the certification data requirements and were quite precisely coupled with CAO 20.7.1B - importantly, neither rule differentiates by class of operation, ie RPT/CHTR/AWK/PVT. In the US, FAR 121 applies only the equivalent of our HICAP RPT. The "wet" rules in Oz were established by letter to Ansett and TAA only, not by legislation (as should have been done!)
As I now understand it, in OZ there are no "wet" runway rules per se, since the abandonment of Oz Flight Manuals - you just sort of apply what you think the rules of the foreign certification authority are, if any. Should be very interesting for good old CASA to regulate - I wonder what regulation they would quote?
The reason I started the thread was to try to unearth some expert advice. As we all know, reading a rule is one thing, knowing how it is applied and what other rules come into play is very much a local experience thing!!!