Dirk Stuck of Germany built a German Army BO-105 PAH helicopter for FSX, as freeware. He writes “……I’ve worked 5 months on this BO version and everybody told me to make it payware but I decided to make it as a freeware for you. If you like to make a donation for my work just send me an e-mail, I would be very gratefull. Dirk@Flight-Team-Bremerhaven.de…”. The BO can be found here.