“There’s an open source airplane being developed in Canada, and now its designers are turning to crowdsourced funding to finish the project. The goal of Maker Plane is to develop a small, two-seat airplane that qualifies as a light sport aircraft and is affordable, safe, and easy to fly. But unlike other home-built aircraft, where companies or individuals charge for their plans or kits, Maker Plane will give its design away for free. The group behind the project consists of pilots and engineers who are designing the airplane, allowing it to be built using the kind of personal manufacturing equipment somebody in the maker community might already have at home or can easily purchase.”
http://www.wired.com/autopia/2013/07/open-source-airplane-design/