Last edited by evanrobbo; 05-01-2011 at 10:07 PM.
GMAX is often used for aircraft design. However, I believe it is only available with FS2002 Professional Version (not Standard Version).
GMAX only comes with FS2002 Professional edition (I own both versions) and I don't think to much of GMAX. Your best bet is to get Abacus FSDS Pro (Flight Simulator Design Studio Professional)
it costs $29.99 to download it.