Wisconsin's strength at Oshkosh clusters around three things: avionics & secure connectivity (Milwaukee/Oak Creek), turbine and component work (Oshkosh/Fox Valley), and a dense small-supplier base that rarely markets itself. The list below prioritizes organizations you can reach in person during the week over primes you can email any time.
| Organization | Why it matters | What to ask | Status |
|---|---|---|---|
| Astronautics Corporation of America — Oak Creek, WI src: astronautics.com — company site | Avionics & secure connectivity; describes products across 150,000+ civil/military aircraft. | Which subsystems are sourced locally vs. in-house? Open to small-lot suppliers? | source-checked |
| Basler Turbo Conversions — Oshkosh, WI src: baslerturbo.com — company site | Aircraft conversion + turbine work; on-field presence during AirVenture. | What component or machining work is subcontracted regionally? | source-checked |
| Sonex Aircraft — Oshkosh, WI src: sonexaircraft.com — company site | Kit aircraft + experimental; strong builder/engineering network at the show. | Which local fabricators/composite shops do they rely on? | source-checked |
| Wisconsin Aviation — Madison, WI src: wisconsinaviation.com — company site | FBO + maintenance/services; a route into regional operators and MRO demand. | What MRO capabilities are in-region vs. sent out of state? | source-checked |
| Regal Rexnord — Aerospace Solutions — Milwaukee, WI src: regalrexnord.com — company site | Motion control / aerospace components at industrial scale. | Qualification path for new component suppliers? | listed |
| United Gear & Assembly — Hudson, WI src: WI aerospace industry profile (inwisconsin.com PDF) | Precision gearing / components — the kind of small supplier hard to find otherwise. | Aerospace-grade certifications held? Capacity for new programs? | needs-review |
+ 6 more in the full sheet (Phoenix LLC / Madison; EPS; regional machine shops from the WEDC profile).
This is a source-checked shortlist of candidate labs, what each publicly states it can test, and the standard language to use. It is not a certification, an accreditation guarantee, or a recommendation of one lab over another. Accreditation scope must be confirmed directly with each facility.
| Lab | Public capability | Why relevant | Open question |
|---|---|---|---|
| Element Materials Technology src: element.com — service pages | RTCA DO-160 across dynamics, climatic, EMI/EMC; notes ITAR/EAR engagements. | Broad single-partner coverage of most DO-160 sections. | Exact facility for your box? Lead time & quote? |
| E-Labs Inc. src: e-labs.com — service pages | DO-160 dynamic/vibration, environmental/electrical; ISO 17025. | Focused avionics compliance; useful fallback. | Virginia location — acceptable vs. Midwest preference? |
| NIAR — Wichita State src: WI/KS state logic — needs direct confirm | Test & certification infrastructure in the Air Capital cluster. | Closest strong Midwest test node. | Which DO-160 sections are in current accreditation scope? |
| NASA JSC — Thermal Vacuum src: nasa.gov — JSC TVAC page | Thermal-vacuum for spaceflight hardware. | Reference-level benchmark, not a commercial first stop. | Use to understand what "serious" TVAC looks like. |
The Midwest supplier base is deep but poorly indexed — most capable shops market minimally. The candidates below are grouped by confidence: anchor-level names confirmed from company sources, plus smaller shops surfaced from state industry profiles that need direct qualification. Public sources establish existence and stated capability only; qualification (AS9100, program fit, capacity) must be confirmed directly.
| Supplier | Public capability | Fit note | Status |
|---|---|---|---|
| Roush Industries — MI src: roush.com — company site | Engineering + advanced manufacturing; additive & propulsion-adjacent. | Strong for prototype-to-production; likely capacity screen needed. | source-checked |
| Merrill Technologies Group — Saginaw, MI src: company source | Large fabrication + advanced manufacturing. | Good for larger structures; confirm aerospace program history. | listed |
| Barron Industries — MI src: barron-industries.com — company site | Precision casting / components. | Casting route if applicable to the part family. | source-checked |
| United Gear & Assembly — Hudson, WI src: WEDC aerospace profile PDF | Precision gearing / machined components. | Promising small supplier; qualification unknown. | needs-review |
| Timken Aerospace — OH src: timken.com — company site | Bearings / precision components. | Anchor-grade; better for volume than prototype. | source-checked |