Ok thanks for fast reply, as default flight when FSX loads I simply have default ultralight and Friday Harbor, and I have then just selected CS 767 and chosen airport where I want to fly from and started my flight, I guess that isn't going to work with this bird then. So if I go to my departure airport with default Cessna 172 and turn on fuel tank selector switch to ALL it should work?

I will try to do that tomorrow when I try this very same flight again and see what happens.