Free addons and downloads for Lockheed Martin Prepar3D, P3D, Microsoft Flight Simulator and Flight Sim series. 1000's of freeware addons for your Flight Simulator! Over 4000 pages of free downloads. More free addon planes than any other site! Complete aircraft. Freeware, quality files for P3D, (Prepar3D), FSX, FS2004, FSX Steam, Flightsim World, Combat Flight Simulator 3, Combat Flight.