Of course they could be up and running with a new type by 2nd November. There is a provision in the regulations to allow foreign registered airplanes to be added to an AOC for up to 6 months. Crews would have to hold the licence of the country of registry to fly them. Plenty of time for those crews to train the locals, then switch to Oz rego. Most of the manuals are probably already written and if already in their hands even CASA could assess an addition to an AOC in 60 days if they pulled their finger out.