as stated, whenever i change the default flight to my payware a/c, airport, and check the "make default" box, it never saves. i can restart and defaults back to the cessna. i'm at a loss. i've changed it many times and never had this problem until i changed my computer and reinstalled fs9.
Usually if you set up a flight that way it will usually work if you check the "Save Flight " box and then title it, and go back and click "Fly Now" and actually do the flight........at least it has on mine so far.