Senate majority
Mathematically there is no way Howard will lose the senate majority until Jun 30 08, then, the best case scenario for Rudd (assuming he wins) would be 34 senate seat, with the coalition on 34 and 8 independents.
Why do I mention this? workchoices stays until at least July 08.
My guess is that FOG is now betting on a labor win & wants to get as many pilots in employed on AWA's before any new IR legislation would pass a non-coalition majority senate. The aim would be to perpetually grandfather these agreements (and I use that term loosely, instruments perhaps?) to create an ongoing B-scale.
Of course Rudd has also stated that the right to negotiate a collective agreement will be reinstated.