What Soloy Aviation Solutions does

Soloy Aviation Solutions is a U.S.-based aerospace engineering firm specializing in FAA Supplemental Type Certificate (STC) approved turboprop engine conversions and modifications for general aviation fixed-wing aircraft and rotorcraft. Founded circa 1973 and headquartered in Olympia, Washington (recently relocated to Brainerd, Minnesota under new ownership), the company converts piston-engine Cessna 206, 207, 208 Caravan, and Beechcraft A36 Bonanza airframes to turbine power using Rolls-Royce 250 series and Pratt & Whitney PT6 turboshaft engines, and provides Bell 206 and MD 500 helicopter engine and accessory installations. Its core product platforms are the Turbine-Pac (STC-certified since 1983, 80+ installations), the patented Dual-Pac twin-engine combining system (FAA STC SE00482SE), the Mark I conversion family, and the next-generation Mark II conversion for Cessna 206H/T206H airframes, supplemented by accessories such as the Cessna 208 Crew Door Restraint, FLIR camera mounts, and dual landing/taxi light systems.

The company's underlying technology combines proprietary engine nacelles, custom mounting systems, and complete powerplant integration designed in-house using computer-aided design and manufacturing, supported by a multidisciplinary aerospace engineering team covering design, analysis, testing, and certification. Revenue is generated through three streams: one-time sale of STC conversion kits and installations (priced on application via the New Products Manager), recurring hardware parts sales through an online catalog, and subscription-based technical publications including service bulletins, maintenance manuals, flight manual supplements, and illustrated parts catalogs delivered electronically or in paper format with annual or two-year revision service. Go-to-market is B2B direct sales targeting aviation operators and aircraft owners, with no public list prices for conversion kits and dedicated sales, support, and publications email channels. The customer base spans utility transport, skydiving, air ambulance, charter, float/amphibious, and special-mission operators, with the company operating under private ownership by NorthPoint Aviation following a 2023 transfer.

Name

Soloy Aviation Solutions

Legal name

Soloy Aviation Solutions

Website

https://soloy.com

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

11–50 employees

Short description

Soloy Aviation Solutions is a U.S. aerospace firm that holds FAA STC approvals to convert piston-engine Cessna and Beechcraft aircraft and Bell/MD rotorcraft to Rolls-Royce 250 and Pratt & Whitney PT6 turbine power, selling conversion kits, parts, and subscription technical publications to aviation operators.

Ownership category

akta.pro rank

Product category

Aircraft Engine Conversions and Modifications

NAICS

Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413), Aircraft Engine and Engine Parts Manufacturing (336412), Aerospace Product and Parts Manufacturing (33641)

SIC

Aircraft Parts & Auxiliary Equipment, Nec (3728), Aircraft Engines & Engine Parts (3724), Aircraft & Parts (3720)

akta.pro primary industry

Fixed-Wing Aircraft Conversion & Modification (STC/Completions) (IMABAAAI)

akta.pro secondary industries

Modification, Retrofit & Engineering (STC, Avionics Upgrades, Conversions) (TLAKAJAI), Turboprop Engines (IMABADAB), Turboshaft Engines (IMABADAD), Aircraft & Engine Efficiency Upgrades (aerodynamics, lightweighting, retrofits) (THABANAB)

Keywords

• Aircraft engine conversions
• Turboprop powerplants
• FAA STC certifications
• Aviation modifications
• Aircraft engine upgrades

Headquarters

HQ city

Olympia

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Aircraft Conversions and Modifications: Sale of STC-approved turboprop engine conversion kits including Turbine-Pac, Dual-Pac, Mark I, and Mark II conversions for Cessna and Beechcraft aircraft. Conversions replace original piston engines with turboprop powerplants.
2. Parts and Components Sales: Sale of replacement parts, hardware, and aircraft components through online catalog. Products include nuts, rivets, screws, fittings, headliners, and specialized aviation hardware.
3. Technical Publications: Subscription-based technical documentation including service bulletins, maintenance manuals, flight manual supplements, and illustrated parts catalogs. Publications available in electronic or paper format with revision service for current calendar year.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Soloy Aviation Solutions manufactures and sells FAA STC-certified turboprop engine conversion kits and aircraft modifications. Its core product line centers on converting piston-engine Cessna 206/207/208 and Beechcraft A36 Bonanza fixed-wing aircraft to Rolls-Royce 250-series or Pratt & Whitney PT6 turboprop powerplants, plus rotorcraft modifications for Bell 206 and MD 500 helicopters. The company also markets replacement parts, accessories (FLIR camera mounts, lighting systems, door restraints), and subscription-based technical publications.

Product overview

Soloy Aviation Solutions specializes in aviation modifications, primarily converting piston-engine aircraft to turbine power. The core product line centers on turbine engine conversions for Cessna fixed-wing aircraft (C206, C207, C208, A36 Bonanza) using Rolls-Royce 250 series and Pratt & Whitney PT6 engines. Products include the Turbine Pac powerplant system, Dual Pac twin-engine system, and various STC-approved modifications. The company also offers rotorcraft modifications for Bell 206 and MD 500 helicopters, plus a range of accessories including FLIR camera mounts, landing lights, and door restraint systems. Engineering services and technical publications support the product portfolio.

Differentiator

Problem solved

Functional benefit

Brands

• Turbine-Pac: STC approved turboprop powerplant utilizing Rolls-Royce 250 series turboshaft engines, available in push or tractor propeller configurations, backbone of Soloy Cessna 206/207 conversions since 1983.
• Dual-Pac
• Soloy MKII
• Mark I

Products and services

• Turbine-Pac turboprop powerplant system Versatile STC-approved turboprop powerplant using Rolls-Royce 250 series turboshaft engines, available in 'pusher' or 'tractor' propeller configurations with 420 HP in the C20S version; foundation of Soloy's Cessna 206/207 conversion product line.
• Dual-Pac twin-engine power system Patented twin-engine system combining output of two independently operating Pratt & Whitney PT6D-114A engines for single propeller output with extreme redundancy enabling safe single-engine intentional operation; certified under FAA STC SE00482SE.
• Soloy MKII Turbine 206 conversion Next-generation conversion for Cessna 206H and T206H featuring upgraded 450 SHP Rolls-Royce 250-B17/F2 engine/gearbox, aerodynamically clean cowling, new engine mounts, and modern electrical system components designed using computer-aided design and manufacturing.
• Soloy A36 Bonanza turbine conversion Turboprop engine conversion for Beechcraft A36 Bonanza aircraft, certified under FAA STC SA3523NM.
• Soloy Mark I (Cessna 206G and T206H/206H) turbine conversion First-generation turbine engine conversion for Cessna 206G (STC SA2353NM) and T206H/206H (STC SA01878SE), replacing Continental TIO-520 with Rolls-Royce/Allison 250 turboshaft engine.
• Soloy Cessna 207 turbine conversion Turboprop conversion for Cessna 207 aircraft, certified under FAA STC SA3322NM.
• Cessna 208 Crew Door Restraint System (CDR) Gas-pressurized actuator system that opens and controls pilot/copilot doors on the Cessna 208 Caravan, preventing wind damage and aiding door operation; field-installable at 3 man-hours per door, certified under FAA STC SA01542SE.
• Soloy FLIR Camera Mount Wing-mounted camera mount system for Cessna 206 aircraft, certified under FAA STC SA02748AT.
• Soloy Cessna 206 Dual Wing Mounted Landing & Taxi Light System Enhanced dual wing-mounted lighting system for Cessna 206 aircraft, certified under FAA STC SA02271SE.
• Headliner Assembly Interior headliner component for Soloy-converted fixed-wing aircraft, available through the Soloy online catalog.
• Bell 206 Rolls-Royce 250-C20R engine installation STC-certified installation of Rolls-Royce 250-C20R turbo-shaft engine in Bell 206L and 206BIII helicopters.
• MD 500 Auxiliary Fuel Tanks Auxiliary fuel tank system extending range and endurance for MD 500 series helicopters.
• Bell 206 Window Kit Window modification kit for Bell 206 series helicopters.
• Portable Heliport Portable heliport solution enabling deployment of rotorcraft operations to off-airport sites.
• Technical Publications (service bulletins, maintenance manuals, flight manual supplements, illustrated parts catalogs) Subscription-based technical documentation for Soloy-converted aircraft including service bulletins, maintenance manuals, flight manual supplements, and illustrated parts catalogs; available in electronic or paper format with annual revision service. Pricing ranges from $528.50 to $692.75 with 1-year or 2-year subscription options.

Quantifiable outcome

• 450 SHP power output from Mark II conversion vs 310 HP original Continental TIO-520
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Market position

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/soloyaviation
• Facebookfacebook.com/soloyaviationsolutions5010Y
• LinkedInlinkedin.com/company/soloy-aviation-solutins

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Soloy Aviation Solutions