Cessna 441 Sound in Flysimware Turboprop Aircraft Posted June 1, 2015 The *.exe file/folder shows the version number in the title: "Flysimware_MITSUBISHI_MU-2B-60_FSX--P3D_Rev1.7". The exterior sound issue that redbarron79 introduced in this thread and that I discussed is still present in Rev1.7 at startup, but seems to "clear up" during climb out and cruise. ????? It sure does EagleOne49........... I found the same issue present.......So i just went back to your modified sound.cfg......no more buzz sound!