im not working in ga at the moment, but will be in the next few weeks, and ive already done all my atpl's.
The ATO tends to take the view that such expenses were
"incurred at a point in time too early" to be deductible (particularly if the expense was incurred in a financial year prior to the year the resulting income was received. As Horatio indicated, unless you have some/any income related to your ATPLs in some way - even indirecly - then unfortunately you would be unable to make a claim that would stand up to ATO scrutiny.