Sonex -- The Sport Aircraft Reality Check!
AeroConversions Accessories

Our Mission at Sonex Aircraft:

Sonex Aircraft, LLC is committed to providing the recreational aviation community innovative, cost-effective and efficient aircraft kits, powerplants, and accessories and supporting them with industry-leading customer service.

In addition, Sonex provides leadership to the grass-roots homebuilt community to protect the experimental-amateur built rules and cultivates new pilots and airplane builders through educational efforts.

Our Vision:

To continue the Sonex Aircraft heritage of Product Innovation, Affordability, Simplicity, Versatility, Performance, Engineering, and Quality and to expand these themes into a broader aviation marketplace.



Happy Thanksgiving!

From our family to yours, Sonex Aircraft would like to wish all of our friends around the world a very happy Thanksgiving! Our offices will be closed for the holiday on November 26th through 29th, and we will reopen again on Monday, November 30th.

Contacting Sonex

AeroVee Turbo Now Approved in the UK!

If you have a homebuilt aircraft project in the United Kingdom, the AeroVee Turbo is now approved by the LAA as an option for your aircraft! Contact our UK dealer to buy or upgrade today!

Learn More About AeroVee Engines and AeroConversions Products!

Thank You Veterans!

Sonex Aircraft would like to take this opportunity to Thank Our Veterans across the country and around the world on this Veterans Day for their service to our country, including our own Kerry Fores, Steven Severson and Jason Kmecheck!

Kerry Fores:
U.S. Air Force

Steve Severson:
U.S. Navy

Jason Kmecheck:
U.S. Army

Read More About Sonex Aircraft Staff!

Xenos First Flight: John Styers


Congratulations to John Styers of Louisburg, North Carolina, whose AeroVee powered Xenos (S/N X0018) flew for the first time on October 31st! "The second flight was landed as a glider with the engine shut off," writes John, "Very easy aircraft to fly." Gold Wings are on the way!

View the Latest Sonex Aircraft Completions

Sonex First Flight: Michael DeFeyter


Congratulations to Michael DeFeyter of Towradgi, NSW Australia, whose standard gear VW powered Sonex (S/N 145) flew for the first time on November 7th! "I was very nervous all week as I knew this moment was coming," writes Michael, "but once I was lined up and pushed that throttle forward though all my nerves went away and I just got into flying mode. Total flight time was about 20 minutes and I enjoyed every second of it. So much so that I will probably have to go do it again tomorrow." Gold Wings are on the way to Michael! See his first flight on our Sonex Flying Stories YouTube Playlist.

View the Latest Sonex Aircraft Completions

Sonex First Flight: Yves Deweer


Congratulations to Yves Deweer of Costa Rica, whose tri-gear Sonex (S/N 1679) flew for the first time on November 2nd! "Was a great day," writes Yves, who built using a Sonex Quick Build Kit received via ocean container in May, 2015. Gold Wings are on the way!

View the Latest Sonex Aircraft Completions

New! Introducing Sub-Kit Quick Builds
and Expanded Kit Ordering Options!

Quick Build Wing and Fuselage Sub-Kits now sold separately!

Sonex is pleased to announce several expanded airframe kit purchasing options!

Quick Build Sub-Kits, Better Quick Build
Quality and Shorter Lead Time:

Quick Build Kits are now available as individual wing and fuselage sub-kits for Sonex, Waiex and Onex aircraft models (Note: Fuselage Quick-Build only available separately for Onex, as wings need to be constructed on the fuselage for accurate rigging). Now you have the flexibility of Sub-Kit ordering combined with the lowest possible build time offered by Quick Build Kits! Sonex Aircraft Quick Build Kits are now constructed entirely in-house at the Sonex factory, offering superior quality and shorter lead times. You can see pricing and place orders for Quick Build Sub-Kits from our Pricing Page.

Credit Card Restrictions Eliminated for US and Canada:
Looking to maximize credit card airline miles or other reward points? Now you can place complete kit and engine orders on your credit card in the US and Canada. Visa, MasterCard and American Express accepted. ($5,000 credit card charge limit per-order applies outside of the US and Canada)

Eliminate Non-Needed FWF Options:
Although we have poured a lot of effort and offer a high-level of available support for AeroVee and Jabiru engine installations, we recognize that some builders just want to "roll their own" alternative engine installations, and some may not be quite ready to make an engine installation decision at the time of airframe kit order. Kit buyers can now choose to remove firewall-forward equipment that they don't need from their kit orders. Cowlings, Engine Mounts and Spinners may be optionally excluded for a reduction in kit price.

See More Sonex Aircraft Kit Options and Features!

New! Horizontal Split Universal Cowlings
Sonex is excited to announce the introduction of new Horizontal Split Universal Cowlings for Sonex/Waiex and Xenos airframes! These new cowlings will ship with all kits beginning this week! A benefit of the NASC Teros UAV program, horizontal split cowlings require no trimming to fit to the aircraft firewall, eliminating several hours of fitting work from your project. Universal cowlings are designed to fit AeroVee/AeroVee Turbo and Jabiru engine installations.

Note: As we are stocking-up to include these new cowlings for all future kit orders, individual orders separate from kit orders will be subject to extended lead-times. Kits ordered for Jabiru engine configuration will receive vertical split Jabiru cowls, however, horizontal split Universal cowls may be supplied upon request.

Teros UAV Horizontally-Split Cowl. Note: chin bulge for high-output alternators and side cowl exits to keep optics on belly clean.

Horizontal Split Universal
Cowling: $442.50

(online ordering)
Note: You must be logged-in as a Sonex Aircraft plans owner to view this product category.

See More Sonex Aircraft Kit Options and Features!

SubSonex First Flight: Redge Greenberg
Flies First Customer-Built SubSonex!

Redge Greenberg with build partner Dwight Tolfer and SubSonex S/N JSX0003.

Redge gives a "thumbs-up" in the cockpit of his SubSonex!

Congratulations to Redge Greenberg of Durango, Colorado, who made the first flight of SubSonex serial number JSX0003 yesterday, October 15th: the first customer-built SubSonex Personal Jet to fly! "I flew the SubSonex this morning, for about 35 minutes… all went well," writes Redge. "My regards to Dwight Tolfer who was a big help for me during the construction project that was done almost entirely in my garage."

Redge received the first SubSonex kit delivery in February, 2015, an Ultra-Quick-Build kit with optional Triton Trailer (see our February 16th Press Release). The SubSonex is sold as a Quick Build Kit only, leaving very little work for the customer, and providing almost everything needed to fly with the exception of avionics and paint! Two Quick Build Kit versions are offered: an EAB-compliant kit for the traditional builder including pre-built wings, fuselage and canopy; and an Experimental Exhibition category Ultra- Quick Build Kit with no “51 percent rule” restrictions.The Ultra-Quick Build customer will install the easily-removable outboard wing panels, engine and fuel system, bolt-in the retractable landing gear, install avionics, electrical systems and controls, install the supplied BRS, fiberglass components and upholstery, and add paint.

"I hold commercial glider, helicopter & single engine land licenses, accumulating 4500+ hours in numerous aircraft," wrote Greenberg for our February press release, "but I never got the chance to fly a jet. I first saw the prototype of the SubSonex at Oshkosh, and followed the development for over a year. When Sonex offered the jet as a kit, I was first in line. Like my RV8, the SubSonex is aerobatic, but the Sonex company also included a ballistic parachute for extra safety."

With two SubSonex JSX-2 factory prototype aircraft now flying, Redge's SubSonex makes number 3 in the worldwide fleet, with 6 more customer kits currently under construction.

Gold Wings are on the way to Redge!

See Today's Official Press Release!

Learn More About the SubSonex Personal Jet!

View the Latest Sonex Aircraft Completions

Sonex Hires R&D Engineer Jessica Bower,
Gets Back to its Skunk Works Roots!

Sonex Aircraft is excited to announce that pilot and engineer Jessica Bower has been hired as the newest member of the Hornets' Nest Research and Development team at Sonex. An incredibly synergistic hire, Jessica is a former employee of the Lockheed Martin ADP "Skunk Works" mentored by early Sonex lead engineer Pete Buck. Jessica is currently building Sonex #1563, while her father John Forster is building Sonex# 1567 and owns Sonex #480. She brings a full tool box of skills, insights and passion that will help us move forward on all our future projects.

Jessica Bower is a MIT graduate with a Bachelor of Science degree in Aeronautics and Astronautics and is a native of nearby Kaukauna, WI. She earned her Private Pilot's License at Oshkosh's Wittman Regional Airport, has attended EAA AirVenture Oshkosh 21 out of her 27 years, and has been an EAA member since the age of 16.

Read more about Jessica in today's Official Press Release.

Find More Sonex and AeroConversions Press Releases

Laarn More About Sonex Aircraft Staff!

Xenos First Flight: Ronald Spier


Congratulations to Ronald Spier of Springfield, Ohio, as he just recently informed us of the first fight of his AeroVee powered Xenos (S/N X0062) on April 3rd! "It actually flies," writes Ron. "Sonex and I must have done something right." We sure did, Ron, and Gold Wings are on the way to you!

View the Latest Sonex Aircraft Completions

Sonex First Flight: Robbie Culver


Congratulations to Robbie Culver of Naperville, Illinois, whose AeroVee Turbo powered, standard gear Sonex (S/N 1517) flew for the first time on October 10th! "Sonex 1517 took to the air on Saturday, October 10th, 2015 at the Aurora IL airport after 4 1/2 years of building," writes Robbie. "The Turbo AeroVee ran smooth and strong and the flight was uneventful. To all the other builders out there, keep going! This is a moment worth all the effort you put into it. Transition training made me feel ready for the flight and allowed me to relax and enjoy the moment. What a great airplane to fly! A huge thank you to my wife Brenda and son Joshua for helping me and supporting me, Michael Farley for his friendship and assistance, and the staff at Sonex Aircraft, LLC."

Robbie currently serves as President of the Sonex Builders and Pilots Foundation. As a freelancer and friend to, his first flight attracted attention from Editor Jim Cambpell. Robbie has also posted several recent videos including a touching video retrospective of the build from his wife, Brenda, a video of his Sonex T-Flight Transition Training experience, and a video of his first flight. These videos and more can be seen on the Sonex YouTube Channel's Sonex Flying Stories playlist, and via the embedded video below.

Gold Wings are on the way to Robbie!

View the Latest Sonex Aircraft Completions

Sonex Holds 61st Builder's Workshop Event!

Joe Norris demonstrates the AeroVee powered Waiex in a high-performance climb for the Workshop crowd on Sunday.

Workshop attendees gained hands-on metalworking experience using Sonex construction techniques with their Workshop projects.

Sonex Aircraft held it's Fall, 2015 Sonex Builder's Workshop on October 3-4th, the 61st Workshop event since the company's founding in 1998!

The event hosted another enthusiastic group of current and prospective Sonex Aircraft builders, as attendees from across the country and around the world traveled to Oshkosh to learn more about building, owning and flying Sonex Aircraft. The group constructed sample Sonex metalworking projects, received detailed informational sessions about all Sonex Aircraft designs, engine options, AeroConversions products, and all other aspects of building, owning and flying Sonex Aircraft.

The weather was a little bit challenged throughout the weekend, however, opportunities opened-up for factory prototype aircraft fly-by's on Sunday, and every Workshop attendee seeking a Basic Aircraft Familiarization Flight through our T-Flight Transition Training Program was able to fly! Workshop attendees also had the whole weekend to inspect every inch of Sonex factory prototype aircraft on the ground, and try them on for size.

The Sonex Aircraft Workshop continues to be an extremely valuable experience for our builders, saving them time, money and answering many frequently asked questions in the building process. Sonex Builder Workshops are held several times per year at the Sonex Aircraft, LLC facilities in Oshkosh, WI, and significant kit discount incentives are offered for attendees. Our next Sonex Workshop will be held February 27-28, 2016. Sign-up Today!

T-Flight Basic Aircraft Familiarization Flights are a popular option for Workshop attendees. Read More about T-Flight Transition Training packages!

John Monnett welcomes the Workshop crowd, lays-out the agenda for the weekend, introduces staff, and passes the microphone around for attendees to introduce themselves.

John Monnett gives a walk-around tour of the technical design features that go-into the Sonex line of aircraft.

Kerry Fores gives Workshop project demonstrations before turning attendees loose on their own metalworking projects.

Workshop participants get to work on their Sonex projects!

Charlie Becker from EAA stopped-by during lunch on Sunday to speak about current EAA initiatives and member benefits.

John's closing session of aircraft building tips is one of the most popular and informative highlights of the weekend.

Read More about Sonex Builder Workshops!

Check-Out the T-Flight Transition Training Program!

Sonex Builder Events: 13th Annual Great Southern Sonex Gathering Announced!

Great Southern Sonex Gathering: See the report from last year's event!

The 13th Annual Great Southern Sonex Gathering will be held in Bryan, TX on November 7th, with the following weekend, November 14th as a rain day. "Coffee and doughnuts starting at 8:00 AM, Fajitas for lunch," writes event organizers. "Sonex fun in the heart of Texas!" More information available at the GSSG web site.

ASA Crossville This Weekend
Also, don't miss the 12th Annual American Sonex Association Fly-In at Crossville, TN this weekend! The Crossville event has historically been the largest grass-roots Sonex builder gathering, drawing many customer Sonex Aircraft of all types.

Find More Sonex Builder Organizations and Events!

SubSonex Vertigo Airshows: Two More Shows Added to SubSonex Airshow Schedule!

Bob Carlton of Vertigo Airshows has recently added the 8th and 9th events to the SubSonex 2015 performance schedule, capping-off a hugely successful year for the inaugural show season in the new jet. We are particularly excited to announce that the SubSonex will be performing at the annual Blue Angels Homecoming Air Show! The SubSonex offers a unique experience in jet shows, combining jet speed with small aircraft maneuverability and close-in aerobatics. See the full show schedule on the Sonex Events Page.

Boshears Skyfest: October 17-18th, Augusta, GA
This air show and fly-in will be celebrating it's 22nd annual event in 2015. The show is dedicated to inspire others to fly, especially youth in the Central Savannah River Area.

NAS Pensacola Blue Angels Homecoming Air Show: November 6-7th, Pensacola, FL
The Blue Angel Homecoming Air Show is an annual tradition at NAS Pensacola, wrapping-up the season with a special show to thank residents of the Blue Angels' home base community. Attractions include the Naval Aviation Museum, and the opportunity to get a unique look at the operations of the Blue's home field. Who knows, maybe some admirals will take interest in the SubSonex as a future mount for the Blue Angels?

See the SubSonex in action on YouTube!

Learn More About the SubSonex Microjet!

JSX-2 Fleet Doubles: SubSonex N241SJ Flies!


The skies over Oshkosh were once again filled with tiny jet noise this afternoon as the JSX-2 worldwide fleet doubled with first flight of SubSonex N241SJ! John Monnett took the sister ship of #1 JSX-2 prototype N141SJ for a short flight today, which was uneventful and successful. #2 JSX-2 N241SJ was constructed at the same time as N141SJ, but flying the aircraft took a back seat to flying and refining it's "Sonex yellow" sibling, leading to it's use advertising the design as Bob Carlton's airshow bird. The gray, shark-mouthed JSX-2 #2 will serve as Sonex's Oshkosh-based SubSonex factory demonstrator, and incorporates all the latest refinements to the SubSonex design.

Learn More About the SubSonex Microjet!

Onex First Flight: Michael Zurawski


Congratulations to Michael Zurawski of Stevens Point, Wisconsin, whose AeroVee powered, standard gear Onex (S/N ONX0148) flew for the first time on September 30th! "The flight could not have gone better," writes Mike. "Everything worked perfectly and no adjustments were needed after the flight. I think what made this possible was a starting with a good kit, attention to details, and Sonex transition training. I would like to thank everyone who helped in anyway during the 22 month building process. Let the flying process begin!" Gold Wings are on the way to Mike!

View the Latest Sonex Aircraft Completions

Jeremy Monnett and Mike Clark Memorial Scholarships Established: Donate Today!

Sonex Aircraft is pleased to announce that Memorial Scholarships have been established in the name of our lost teammates, Jeremy Monnett and Mike Clark. Managed by the Oshkosh Area Community Foundation, the Jeremy T. Monnett Memorial Scholarship Fund is available to graduating high school seniors from Oshkosh, WI public and private high schools who are pursuing degrees in Aerospace or Aeronautical Engineering, Mechanical Engineering, or any other Aerospace-related major field of study. The Mike Clark Memorial Scholarship Fund is available to graduating high school seniors with a passion for aviation who plan to attend Clark’s alma-mater, Fox Valley Technical College’s SJ Spanbauer Center, or other colleges for a degree in the aviation field.

Your donations are needed to help Jeremy and Mike's legacy live-on with the success of these scholarship programs! All funds are held in the Oshkosh Area Community Foundation’s investment pool, and foundation committees solicit student applications and select winning scholarship candidates.

Donations may be made online at the following links:
• Jeremy T. Monnett Memorial Scholarship Fund:
• Mike Clark Memorial Scholarship Fund:

Learn more about the Jeremy Monnett and Mike Clark Memorial Scholarship Funds in today's Official Press Release.

Find More Sonex and AeroConversions Press Releases

Introducing AeroConversions Control Stick Grip!

Introducing the all-new AeroConversions Control Stick Grip! AeroConversions grips are injection molded into an ergonomic shape using medium durometer polypropylene with a non-slip, comfortable feel. The bolt-together assembly features molded-in threaded brass hardware inserts, and includes two switch plates for use with switches of the customer's choice. Switch plates are indexed to prevent rotation within the assembly, and replacement plates may be ordered separately. (Switches not included or sold by AeroConversions)

Control Stick Grip

ACV-G10: $76.00

(online ordering)


Indexed switch plates included for use with switches of customer's choice.

Find More AeroConversions Products!

Sonex Aircraft in the News: Sonex Fleet Featured in Cirrus Owners and Pilots Magazine!

Sonex Aircraft, LLC is featured in the September issue of Cirrus Pilot, official magazine of the Cirrus Owners and Pilots Association. "The Step-Down Fix" written by Matthew McDaniel (download 864kb PDF file) focuses on the Sonex fleet of aircraft as a cure for the boredom and intensity of IFR cross country traveling often experienced by those flying complex aircraft like the Cirrus. McDaniel travelled to Sonex factory headquarters in Oshkosh, WI and took the T-Flight Transition Training course before sampling other aircraft in the fleet for the article. The 7 page feature describes the T-Flight experience, along with the versatility, fun and economy of the Sonex fleet. The article even features a diagram of two Onex folding-wing aircraft fitting into a small T-hangar with a Cirrus! Sonex Aircraft are the perfect "runabout" second aircraft for Cirrus owners looking to work out their fun-flying kinks!

This article appears in the Sept/Oct 2015 issue of Cirrus Pilot magazine and is posted courtesy of the Cirrus Owners and Pilots Association (COPA) and the author (Matthew McDaniel).  Copyright COPA and Matthew McDaniel.  All rights reserved and unauthorized reproduction is strictly prohibited.

Find More Articles About Sonex and AeroConversions!

Sonex First Flight: Tim Shaw


Congratulations to Tim Shaw and build partner Lee Wilkinson of Belton, England, whose Jabiru 3300 powered, standard gear Sonex (S/N 1600) flew for the first time on September 20th! "At 12 noon on the 20th September (UK time) Sonex kit No 1600 flew for the first time in the capable hands of Sonex agent and UK Test pilot Mike Moulai," writes Tim. "Lee Wilkinson and myself, Started building in February 2013. She is a conventional gear (tail wheel) Jabiru 3300 powered rocket ship and quite a change from the Streak Shadow I have owned for the last 7 years! She needs another 5 hours test flying before we can get our hands on her but it was quite a day to see all our hard work come to fruition as she left the ground. I did manage to get a trip as observer and she handles like a dream! You now have two more happy Sonex flyers to add to the fold." Gold Wings are on the way!

View the Latest Sonex Aircraft Completions

Sonex Builder Events: Northeast Sonex Builders Hold Successful 7th Annual Fly-In!

The 7th Annual Northeast Sonex Fly-In was held on Saturday, September 12th at the Keene, NH airport, and was a successful event once again this year, despite some weather challenges.

"A total of approximately 40 people attended the event," writes event organizer Mike Smith, "with the weather keeping the attendance a bit lower than past years. But there were several new faces this year who were either building or thinking of building a Sonex product." Six Sonex aircraft were able to make it in to the fly-in, displaying a good cross section of airframes, engines and finishes.

Attendees were also treated to some aerobatics overhead during the event, as the New England Aerobatic Club held their practice on the field that day, including one Pitts pilot who also happens to be building a Sonex!

"The presentations were very well received," writes Mike. Presentations included Aaron Knight talking about his epic trip from Massachusetts to Denali, Alaska last year. Larry Rice gave a presentation about modern LED aircraft lighting, "with the perfect balance of technical and practical information," adds Mike. And Mike Smith gave a presentation about the AeroVee engine. "Everyone learned something, or had something to contribute."

"Thank you to our sponsors, Sonex Aircraft and Wicks Aircraft, for the door prizes. And a HUGE THANK YOU to the local EAA 1314 chapter! They coordinated all the on-site logistics including food, and everything ran very smoothly." Sonex Aircraft would like to extend it's own huge thank you to Mike Smith for organizing this wonderful grass-roots builder fly-in tradition for the 7th year!

Find More Sonex Builder Organizations and Events!

New: Embroidered Caps and Sonex/EAA Merchandise & Apparel!

New Sonex Merchandise and Apparel from EAA!
Sonex Aircraft is pleased to offer Sonex Merchandise and Apparel from EAA! Created as a collaboration between Sonex and EAA's merchandising team, these new products offer a fresh look to Sonex Aircraft screen-print T-shirts and will expand the line of Sonex merchandise with fun items like metalized signs for your shop and Sonex logo pub glasses for your O-Club. In addition to giving a cool new look to Sonex shirts, this new merchandising program helps to spread the word about Sonex products with merchandising through EAA's web site, the EAA AirVenture Museum's Aeronautica Gift Shop, and EAA's stores across AirVenture Oshkosh grounds! See and order all the new Sonex merchandise exclusively at!

New Sonex Embroidered Caps: All Models Represented!
Sonex Aircraft now has new embroidered caps in-stock, including new SubSonex and Xenos designs! All models are represented: Sonex, Waiex, Xenos, Onex and SubSonex, each available in your choice of Khaki, Charcoal or Yellow hat colors. Order now on the Sonex Web Store!

Explore More Purchases, Including Aircraft Kits, on the Sonex Web Store!

Recently Archived Stories

> News Archive Index

Complete Info Pack:


Builder Workshop:

$200 (free with purchase of kit)

Onex Kit (base price):

Build and Fly for $27,380*

Sonex Kit (base price):

Build and Fly for $29,602*

Waiex Kit (base price):

Build and Fly for $30,327*

Xenos Kit (base price):

Build and Fly for $35,400*

AeroVee Engine Kit:


Financing Available!

*View Our Complete Cost Worksheet!


Build a Sonex Aircraft in Your School!

Through the Sonex Education Initiative, your school, EAA chapter or community organization can receive 10% discount incentives on any Sonex Complete Airframe Kit or AeroVee Engine Kit! Aviation metalworking "Starter Kit" packages are also available.

To find out more, see the official Sonex Education Initiative web site:





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