Sonex Aircraft
Sonex Aircraft, LLC is an American kit aircraft manufacturer located in Oshkosh, Wisconsin, producing kits for four all-metal homebuilt monoplanes. The company was founded in 1998 by John Monnett, who has designed the Monnett Sonerai sport aircraft series, Monnett Monerai sailplane, Monnett Moni motorglider, and Monnett Monex racer.
History
The company opened a flight center and a parts distribution warehouse in 2006.In 2013, the FAA National Kit Evaluation Team approved fast-build "51% rule" versions of the Sonex, Waiex, and Onex.
Jeremy Monnett, the son of founder John Monnett Jr. and CEO, was killed in an airplane crash in 2015.
In June 2018, John Monnett announced his plan to retire and sell the company. In January 2022, Sonex employee and general manager, Mark Schaible, purchased the assets of Sonex Aircraft LLC and Sonex Aerospace LLC, forming them into a new company, Sonex LLC. Schaible will be owner and president of the new company.
In December 2019 the John Monnett-designed Sonerai was acquired by Sonex Aircraft.
The company rolled out a prototype highwing aircraft in 2024.
Products
Aircraft
| Model name | First flight | Number built | Type |
| Sonerai | 1971 | Single piston engine low-wing homebuilt airplane | |
| Sonex | 2000 | 500 by 2014 | Single piston engine low-wing homebuilt airplane |
| Waiex | 2003 | Single piston engine low-wing homebuilt airplane | |
| Xenos | 2003 | Single piston engine low-wing homebuilt motor glider | |
| Onex | 2011 | Single piston engine low-wing homebuilt airplane | |
| ESA | Unbuilt single electric engine low-wing homebuilt airplane | ||
| SubSonex JSX-1 | 2011 | Single jet engine low-wing homebuilt airplane | |
| SubSonex JSX-2 | 2014 | Single jet engine low-wing homebuilt airplane | |
| Teros | 2015 | Single piston engine low-wing unmanned aerial vehicle | |
| Sierra Hotel | Single piston engine high-wing homebuilt airplane |