FS2Crew products are typically distributed via their official website or authorized flight sim stores (SimMarket, etc.). They usually utilize dedicated installers ( .exe ) rather than raw archives.
If this file was obtained from a third-party forum or file-sharing site, it may be an unofficial "SOP modification" or a pirated version.
Placing configuration files in the FS2Crew or PMDG root folders within the flight simulator directory.