Downloading files with names like this from third-party or "repack" sites carries significant risks:
: Because the game is dozens of gigabytes in size, they split the installer into multiple compressed "parts" (e.g., .part19.rar ) to make downloading and sharing easier on file-hosting sites. Aerofly_FS_4_Flight_Simulator-Razor1911.part19.rar
: Remove digital rights management (like Steam's protection) so the game can run without a license. Downloading files with names like this from third-party