Thanks Patchz for the link

Indeed this is FSX. If you pay attention to the last shot, you'll notice the famous "prop behind clouds" problems with the FS9 format planes.
This plane is one of my favorites in FSX. The virtual cockpit is gorgeous, very detailled, well textures and almost completely clickable. The external model and textures are simply some of the best piece of modelling I've ever seen in the whole FS serie. In fact, I would call this plane a "mini-POSKY". Now if only I could remember the name of the original author... kudos to him, anyway, for having built one of the finest FS addons I know about.