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John Monnett

Sonex Aircraft
Private
Industry Aerospace
Headquarters Oshkosh, Wisconsin
Key people
John Monnett (founder)
Jeremy Monnett (CEO until his death in 2015)
Products Homebuilt aircraft
Number of employees
9
Subsidiaries AeroConversions engines
Website SonexAircraft.com

Sonex Aircraft, LLC is an American aircraft kit manufacturer located in Oshkosh, Wisconsin, producing kits for four all-metal homebuilt monoplanes. The company is led by John Monnett who has designed the Monnett Sonerai sport aircraft series, Monnett Monerai sailplane, Monnett Moni motorglider, and Monnett Monex racer. Monnett designs are displayed in the Steven F. Udvar-Hazy Center of the National Air and Space Museum near Washington D.C.

In 2013, the FAA National Kit Evaluation Team (NKET) approved fast-build "51% rule" versions of the Sonex, Waiex, and Onex.

AeroConversions manufactures the AeroConversions AeroVee Engine, a custom aircraft implementation of the Volkswagen air-cooled engine.

The Hornet's Nest is the research and development arm of Sonex LLC.

At AirVenture 2007, Sonex Aircraft announced a project to work on innovative technologies in aviation. The E-flight projects includes using an electric motor, ethanol-based fuels, and other power plant alternatives. In December 2010, an all-electric Waiex was test flown from Wittman field in Oshkosh, Wisconsin. The aircraft was flown with a 54 kW (72 hp) brushless DC electric motor, managed by a newly designed controller. Power is from a collection of 14.5 kW-hour lithium polymer batteries, giving the aircraft an endurance of one hour at low-speed cruise or 15 minutes of aerobatics. This was the beginning of the development of the Sonex Electric Sport Aircraft.


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