I did manage to change the default aircraft Diamond DA40NG to the Cessna 208 B Grand Caravan of one of the Bush trips via the developers mode. It doesn’t though behave 100% as per a standard flight. I wonder whether the sim changes the settings of assistance to more “realistic” ones, because while I was flying I got the massage that I stressed the aircraft and damaged it and I had to restart the bush leg again. I never had this message before while flying standard routes.