This was an abandoned project that we were planning to release for FSX but we felt that the steam was going out from that platform so we let it rest for a while. Based on that old engine P3D introduced several very interesting new features including the long due graphics upgrades, performance tweaks, implementation of advanced helicopter flight engine and a lot of necessary fixes for bugs that menaced the old FSX platform.
This is a companion discussion topic for the original entry at https://www.helisimmer.com/news/nemeth-designs-working-bell-407-p3d-v4/