peterc005,
While FSX may be good as an image generator for a visual system or a navigation/FMS/procedure trainer, it is completely inadequate as a flight simulation model which can be proven and certified through the kind of objective testing that "real" simulators have to perform. I know of no certified (JAR-FSTD, Part-60 or otherwise) device (FTD, FFS, whatever) which uses FSX for the core simulation. None whatsoever.
You might be thinking of X-plane, which is to my knowledge the only commercially available simulation program which has successfully been used as a basis for FAA-certified fixed-base trainers.
Last edited by A-FLOOR; 5th January 2013 at 15:08.