The engine issue was for me too but I managed to fix it by loading the latest dev FBW 320. Now my issue is the altitude button wont toggle for and increase/decrease in altitude. Sigh. Still I managed to go from YMML to YSCB with no other issue. Fenix has an update. As for previous comment re inibuild, its an attempt at a simulated aircraft. Mind you, my balsa wood plane had more detail. GL and Happy flying.