Just another observation from the outside ....
The Australian Government (via the ATO) has recently, quite strongly, declared its position on activities that may be, on the face of it, legal, but, on further investigation ... not "in the spirit of the law" ... viz a viz .. Paul Hogan's alledged tax irregularities.
I would suggest that the alledged aviation related activities you talk of might meet a similar fate ... if appropriately presented to the Government (whoever that may end up being).