Kagamuga - thanks for the clarification. 61.510 is the reg of interest. I thought CASA might have been refering to the MPl rather than multi-pilot aircraft but couldn't find evidence to support that.
Is multi-crew co-operation done as part of a type rating that's included with an aircraft purchase, or is it a stand alone component.
I think a Gulfstream G600 would be just the ticket after a lotto win. I asked a friend what he would do if he won $100 million. "I'd spend half the money on aircraft and cars and the other half I would waste". A man who has his priorities right.