Thanks for the info
I think we have it all covered now, after speaking to the airfield ops chap at Darwin airport we've established there's a suitable military/public (dual purpose) airport within a reasonable range that he suggested. Just in the initial planning stage at the moment.
The alternate we'd be using is in case of adverse WX at the intended destination, closure of airfield, enforced diversion, etc.
Ta very much for the ideas though
