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Creating a Mini Personal Jet

Sonex Aircraft founder and president John Monnett fulfilled his desire to be a jet pilot by building the SubSonex. Photo by Jim Koepnick
Gemini Sparkle

Key Takeaways:

  • Sonex Aircraft founder John Monnett developed the SubSonex, an affordable single-engine jet kit, fulfilling his personal dream of flying a jet and making it accessible to others.
  • The SubSonex underwent significant design evolution, overcoming initial challenges with engine control and an unstable single-wheel tail-dragger landing gear to become the stable JSX-2 model.
  • The resulting jet is easy to fly, cruises at 230-240 knots, and is estimated to cost around $130,000 (kit, engine, and avionics) to own.
  • Five SubSonex aircraft are currently flying with more under construction, making personal jet ownership more attainable and leaving Monnett "spoiled" for other types of flying.
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John Monnett always thought of himself as a jet pilot, but as his 50s began drawing to a close he realized the only way that was going to happen was if he built one himself. Luckily for Monnett, his day job is founder and president of Oshkosh-based Sonex Aircraft, a kit builder already known for airplanes like the Sonex-B, the Xenos-B and the OneX.

Rob Mark

Rob Mark is an award-winning journalist, business jet pilot, flight instructor, and blogger.

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