You absolutely can save a different default flight but it's not obvious HOW you do it. This is one of the significant UI mistakes that a lot folks have pointed out. There is no way to load a saved flight from the 'Training Scenario Setup' screen. What you have to do is this:

  • Let the F-22 flight load
  • Use the menus to change your location, aircraft, time, ready to fly or cold and dark, etc.
  • Select "Flights/Save..."
  • Give the save file a name and then click the 'Default' button on the lower left corner of the thumbnail picture. It will turn dark blue when 'default' is selected and will be light gray otherwise
  • Click 'OK'