Although they don't operate in Oz, try talking to either Alpine Helicopters in Kelowna, British Columbia, Canada, or chc's advanced flight school in Penticton, B.C. Alpine is one of the worlds leaders in heli-skiing, (they've been at it from the start basically) and chc's school is the world's oldest mountain flying school. (over 50 years of continuous operation) They train the Canadian military, and some of the U.S. Navy pilots. Hope this helps.