It’s among the first designs to prove that the 141- and 160-horsepower Rotax 915 iS and 916 iS engines are suitable for four-seat airplanes, and it delivers outstanding speed, range, and payload.
Sling also redefines factory “builder-assist” programs by bringing customers to its factory in South Africa to put their kit airplanes together. FAA rules require amateur builders to construct at least 51 percent of their aircraft, but the agency says nothing about where the work is performed.
Sling also builds complete aircraft that can be imported and licensed in the United States under more stringent experimental/exhibition regulations.
Sling also subjects its airplanes to extreme tests. The TSi, for example, has flown nonstop across oceans, reached altitudes above 30,000 feet, and flown nonstop across the United States.
If and when the FAA expands the weight limit for light sport aircraft with the MOSAIC proposal now under consideration, the Sling TSi could fit neatly into the new paradigm.