Popular Rotorcraft Association - A group of homebuilt rotorcraft enthusiasts that get together to exchange ideas, information, and help. Innovative Wings - Professional aircraft building and builder assist services. Builds both full size and kit planes. Details of projects, resources and kit planes. AirCrafters LLC - A builder assistance center providing expert technical assistance to builders of custom and experimental aircraft. HomeBuiltAirplanes.Com - Discussion forum dedicated to homebuilt aircraft and the techniques for building and flying them. Wings Forum - Forum for homebuilt kit and plans built experimental aircraft pilots and homebuilders, monitored by aviation experts. Sport Aircraft and General Aviation Directory - Resource for enthusiasts. Links and descriptions for manufacturers, associations, builder sites and publications. KRnet Internet List - Rand Robinson Engineering KR aircraft mailinglist for KR1, KR2, and KR2S experimental aircraft builders and pilots. Van's Air Force - Online community for Pilots and builders of Van's RV kitplanes. Includes forums, news, and resources. EAA SportAir Workshops - Offering weekend workshops designed to prepare you for building your own airplane.