Griffinblack - Didn't make myself clear. An Airline will employ based on age and experience that best fits their criteria and mould assuming competency to be a given.
I agree that it would be wrong to tell someone who had 'aced' it through the SIM check that, despite that, they were not selected due to age.
Bendigo, go for it by all means but I suspect QF are well enough ahead of the game not to get caught out at a tribunal on a discrimination issue, I feel certain they will have all bases covered and I doubt you are the first to consider taking action.