I'd be surprised if you can bring an aircraft in as personal effects. You certainly can't do that for personal import cars.
I suspect you'll be up for at least the 10% GST on dock-side value, as it is with motor vehicles. The valuation will probably come it much lower than "market value" if my experience with importing my car (2009) is any guide.
I believe there is no duty on aircraft or aircraft parts into Australia.
Last edited by Andy_RR; 4th Jul 2013 at 07:12.