Hello, Yak-40 for FSX in progress. But alpha version already in public access. You may try stock version from http://yak40.except.pw/files/y40x_alpha2_full.zip, documentation http://yak40.except.pw/files/Flight Manual.pdf Also you may try version based on my version yak40 for FSX from community http://yak40.except.pw/files/MFSX-Yak-40_3-2.rar (not tested by me) And sorry if my english bad. This is not my native language. New version for FSX will be soon.