Williams International
Williams International is a privately held American manufacturer, founded in 1955, that designs, produces, and supports small gas turbine engines (FJ33 and FJ44 families) for business jets and cruise missile propulsion, serving aircraft OEMs (Pilatus, Cessna, Cirrus) and the US Department of Defense.
- Company typePrivate
- Founded1955
- HeadquartersCommerce Township, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Williams International does
Williams International is a privately held American manufacturer of small gas turbine engines, founded in 1955 and headquartered in Pontiac, Michigan, with corporate operations at 2000 Centerpoint Parkway. The company designs, produces, and supports two primary engine families — the FJ33 for light jets and personal aircraft, and the FJ44 for mid-size business jets — including specific variants such as the FJ44-4, FJ44-4A (with Quiet Power Mode), and the FJ33-5A. Williams is described as the world leader in small gas turbine engine development and manufacturing, and operates as a vertically integrated organization controlling engineering, testing, production, and aftermarket support in-house.
The company's commercial customer base consists primarily of business aviation OEMs including Pilatus (PC-24 Super Versatile Jet), Cessna/Textron (Citation CJ2+, CJ3, CJ4, Excel), and Cirrus Aircraft (SF50 Vision Jet), with over 500 PC-24 aircraft delivered with Williams FJ44-4A engines. On the defense side, Williams is the primary supplier of turbofan engines for long-range land-attack cruise missiles to the US Department of Defense and is reportedly the near-exclusive supplier to European militaries for that capability. End-customer relationships extend through corporate and charter operators (e.g., Amway Aviation, Eagle Transport Corp, MEB Leasing, GW Aviation) with multi-decade tenures.
Revenue is generated through direct OEM sales of new engines and through enterprise-level aftermarket product support services accessed via a dedicated customer portal. Pricing is not publicly disclosed and is handled through direct enterprise sales quotes. The company maintains a global footprint spanning North America, Europe (Germany, United Kingdom), Australia, Mexico, and South Korea, and is currently expanding with a new production facility in Okaloosa County, Florida (groundbreaking 2025-10-30). Headcount is reported in the 1,001–5,000 range; the company remains privately owned with no disclosed institutional investors, funding rounds, or public market listing.
Williams International firmographics
Firmographics- Name
- Williams International
- Legal name
- Williams International Co., L.L.C.
- Website
- https://williams-int.com
- Company type
- Private
- Founded year
- 1955
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- Williams International is a privately held American manufacturer, founded in 1955, that designs, produces, and supports small gas turbine engines (FJ33 and FJ44 families) for business jets and cruise missile propulsion, serving aircraft OEMs (Pilatus, Cessna, Cirrus) and the US Department of Defense.
- Ownership category
- akta.pro rank
Williams International industry classification
Industry- Product category
- Aerospace Gas Turbine Engines
- NAICS
- Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing (336415), Aircraft Manufacturing (336411), Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413)
- SIC
- Aircraft Engines & Engine Parts (3724), Guided Missiles & Space Vehicles & Parts (3760), Aircraft & Parts (3720)
- akta.pro primary industry
- Turbofan Engines (IMABADAA)
- akta.pro secondary industry
- Military Aerospace Engines & Propulsion (IMABAMAD)
Keywords
Where Williams International is headquartered
LocationHeadquarters
- HQ city
- Commerce Township
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Williams International business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Technology or R&D, Supply Chain, Infrastructure
Revenue model
- Gas Turbine Engine Sales: Design, manufacture, and sale of gas turbine engines to aircraft OEMs and operators. The company is vertically integrated, controlling development, production, testing, and support.
- Product Support and Aftermarket Services: Engine maintenance, support, spare parts, and technical services through customer portal and dedicated product support team.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Williams International product offering
Product offeringCore offering
Williams International designs, develops, manufactures, tests, and supports small gas turbine engines — primarily the FJ33 and FJ44 turbofan engine families — used to power light business jets and personal aircraft (e.g., Cessna Citation CJ series, Pilatus PC-24, Cirrus SF50 Vision Jet) as well as long-range land-attack cruise missiles. The company is vertically integrated, controlling design, production, testing, and aftermarket product support, and operates dedicated customer and supplier portals.
Product overview
Williams International is a gas turbine engine manufacturer specializing in the FJ33® and FJ44® turbofan engine families for business jets and light aircraft. The FJ33® family serves light jets and personal aircraft, while the FJ44® family powers popular business aircraft including the Cessna Citation series, Pilatus PC-24, and Cirrus Vision Jet. The company offers engine products, product support services, customer/supplier portals, and maintains a focus on sustainable aviation through SAF-compatible engines.
Differentiator
Problem solved
Functional benefit
Products and services
- FJ33 Engine Family Family of small turbofan engines designed for light jets and personal aircraft, providing efficient propulsion for regional and business aviation applications.
- FJ44 Engine Family Mid-size turbofan engine family powering popular business jets including the Cessna Citation CJ series, Pilatus PC-24, and Cirrus Vision Jet; includes variants such as the FJ44-4A with Quiet Power Mode reduced-noise capability.
- FJ33-5A Engine Turbofan engine variant in the FJ33 family serving light jet and personal aircraft applications.
- FJ44-4 Engine (100% SAF Flight) Turbofan engine variant demonstrated flying on 100% Sustainable Aviation Fuel (SAF), showcasing Williams' capability in sustainable aviation propulsion.
- Product Support and Aftermarket Services Comprehensive aftermarket support for Williams engines, including a customer portal, dedicated product support team, technical service, and spare parts delivered via direct support channels.
Quantifiable outcome
- GlobalFlyer achieved 342 mph and 25,766 miles non-stop, non-refueled around-the-world record
- +1 more outcomes
Companies that use Williams International
Customer profileNamed customers6 records
Segments3 records
Ideal customer profiles2 records
Williams International technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Williams International partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Chrysler Turbine Car Restoration ProjectminorApproximately 200 specialists including engineers from Williams International volunteered to restore Jay Leno's Chrysler Turbine Car, using a combination of original spare parts, 3D-printed components, and aerospace expertise.
Scale indicators3 records
Recent moves5 records
Expansion highlights5 records
Williams International competitors and assessment
Company assessmentMarket position
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Williams International social profiles
Digital presenceWilliams International compliance and trust
Trust signalCompliance2 records
Williams International financial estimates
Financial estimateRevenue estimate
Valuation estimate
Williams International leadership team
Management profileNumber of profiles
Profiles2 records
Williams International funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Williams International M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Williams International
What does Williams International do?
Williams International designs, develops, manufactures, tests, and supports small gas turbine engines — primarily the FJ33 and FJ44 turbofan engine families — used to power light business jets and personal aircraft (e.g., Cessna Citation CJ series, Pilatus PC-24, Cirrus SF50 Vision Jet) as well as long-range land-attack cruise missiles. The company is vertically integrated, controlling design, production, testing, and aftermarket product support, and operates dedicated customer and supplier portals.
Is Williams International a public or private company?
Williams International is a private company. It is classified as family owned and is currently operating.
When was Williams International founded?
Williams International was founded in 1955. It employs 1,001 to 5,000 people.
Where is Williams International based?
Williams International is headquartered in Commerce Township, United States, in the North America region.
How does Williams International make money?
Two revenue lines are on record. Gas Turbine Engine Sales are the primary driver. The others are product Support and Aftermarket Services.
Does Williams International have an API?
No public API is recorded for Williams International.
What industry is Williams International in?
Williams International's product category is Aerospace Gas Turbine Engines. Its primary akta.pro industry code is IMABADAA, Turbofan Engines, with a secondary code of IMABAMAD, Military Aerospace Engines & Propulsion. Its NAICS code is 336415 and its SIC code is 3724.