Sorry to be the bearer of bad news but you'll have no chance of getting a job in OZ for such a short time.
The working visa retricts you to a max 3 months with any 1 employer and the airlines won't touch you for such a short time as by the time they have trained you and sorted out security passes etc etc it's time to move on.
It's a bit !!!!ty considering when an Aussie comes to the UK they can not only stay for 2 years compared to our 1 over there but they also have no max restriction on how long they can work with an employer.
I went back in 1997/98 and all I'd ever done was work in aviation and could not get a job in the airports/airlines at all for reasons stated above. The only work I ended up getting was office work through temping agencies but because I'd never worked in an office before I wasn't familier with the differant pc packages used in office work so just got crappy jobs like stuffing envelopes and moving boxes and stuff.
I'd suggest brushing up on either bar work ,shop work or learning as much as you can about the differant pc packages if you want to get an office job. They are the easiest/ most widely available jobs to get.
It ain't as easy as you might think to get work over there especially now that every prince and his dog are going !!.
Good Luck.
