I still think everyone's missing the point of the thread.
Dick says that the Ambidji Report says that Bankstown is unsafe if you use the CASA risk model. Everyone seems to be saying that what's being done now at Bankstown is actually OK in real practice.
So, obviously the CASA risk model is faulty and should be fixed.
Until then, you can argue 'till the cows come home about NAS and Class D and US procedures and all that stuff, but it will never pass any risk test CASA currently has, because they're saying what we have now is unsafe, which makes no sense at all.
Wouldn't it be better to talk about how CASA could develop a risk model that everyone can accept and which actually recognises what's really happening in the real world. If Dick's experts have inputs, good. If you guys have inputs, also good. Maybe CASA should open up an NPRM process to get practical inputs into risk models.