Sonaca

What Sonaca does

Sonaca is a Belgian Tier-1 aerospace aerostructures manufacturer headquartered in Gosselies, Belgium, founded in 1920 and privately held under the historical shareholding of Belgian government investment entities Wallonie Entreprendre and SFPIM. The company designs, develops, certifies, and manufactures metallic and composite aircraft structures — including wing leading edges, wing movables (slats, flaps, ailerons, spoilers), fuselage sections, doors, engine pylons, and integrated assemblies — for the civil aviation, defense, and space markets. Its core technology stack combines proprietary out-of-autoclave composite processes (SQRTM and RTM, delivering 20–30% cost reductions versus traditional autoclave), automated tape laying (ATL), electro-thermal ice protection systems (eWIPS), metal bonding, advanced sealing, large-scale precision machining and peen forming (up to 18 meters), and an in-house numerical analysis platform covering the full structural sizing chain from concept to certification. Sonaca also delivers aftermarket and MRO services (EASA Part21G, Part145, FAA FAR145), engineering services (300+ engineers across 3 locations), and space structures for ESA, EUMETSAT, and European integrators.

Sonaca operates as a B2B Tier-1 supplier to major aerospace OEMs — Airbus, Boeing, Embraer, Bombardier, Dassault, Lockheed Martin, Airbus Defence and Space, Sikorsky, Leonardo, Wisk Aero, and MDA — with an average customer relationship duration exceeding 30 years and a contract-based pricing model negotiated directly with each OEM program. Following the October 2025 closing of Sonaca's acquisition of 51% of Aciturri Aerostructures (announced December 2024), the combined entity is the third-largest independent aerostructure player globally, with 6,700+ employees, a projected 2025 revenue exceeding €1.2 billion, an order backlog of nearly $10 billion providing roughly 8 years of revenue visibility, and 27 aerostructure facilities plus 4 engineering offices across 7 countries (Belgium, Romania, Spain, Brazil, USA, Canada, Mexico). The customer base is concentrated among a small number of large OEMs, and revenue scales with major platform production rates — particularly the Airbus A320/A321 family — which both anchors long-term visibility and creates exposure to OEM program decisions.

Name

Sonaca

Legal name

SONACA SA

Website

https://sonaca.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Sonaca is a Belgian Tier-1 aerostructures manufacturer serving Airbus, Boeing, Embraer, and Lockheed across civil aviation, defense, and space. The combined Sonaca-Aciturri entity generates over €1.2 billion in revenue with 6,700+ employees across 7 countries.

Ownership category

akta.pro rank

Product category

Aerospace Aerostructures Manufacturing

NAICS

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

SIC

Aircraft & Parts (3720), Aircraft Parts & Auxiliary Equipment, Nec (3728)

akta.pro primary industry

Primary Airframe Structures (Fuselage, Wing, Empennage) (IMABAEAA)

akta.pro secondary industries

Structural Assemblies & Integration (Airframe Subassemblies) (IMABAEAD), Doors, Hatches, Canopies & Access Panels (IMABAEAF), Military Aircraft Structures, Airframes & Composites (IMABAMAH)

Keywords

• Aerospace manufacturing
• Aerostructures design
• Composite manufacturing
• Aircraft components
• Aerospace engineering

Headquarters

HQ city

Gosselies

HQ country

Belgium

HQ region

Europe

Offices19 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Aerostructure Manufacturing & Assembly: Design, development, certification, and manufacturing of aircraft structures including wing slats, flaps, ailerons, spoilers, fuselage sections, doors, and engine pylons. Revenue generated from long-term OEM supply contracts with major aerospace manufacturers.
2. Engineering Services: End-to-end mechanical design, embedded systems development, advanced numerical simulations, prototyping and testing, tooling and manufacturing engineering, flight tests support, and project management services. Includes 300 engineers across 3 locations.
3. Aftermarket & MRO: Spare parts delivery, structural modifications and repairs, in-service engineering support, AOG (Aircraft on Ground) 24/7 support, training, and inspection services. Approved under EASA Part21G, Part145, and FAA FAR145.
4. Space Structures & Systems: Satellite platforms, launcher structures, instrument structures, electromechanical subsystems, thermal control systems, and scientific instruments for ESA, EUMETSAT, and European integrators.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Sonaca designs, develops, certifies, manufactures, and assembles metallic and composite aerostructures—including wing leading edges, slats, flaps, ailerons, spoilers, fuselage sections, doors, and engine pylons—for commercial aviation, defense, and space programs. The company also provides integrated engineering services (design, simulation, prototyping, testing) and aftermarket/MRO support (spare parts, structural repairs, AOG 24/7 support) to major aerospace OEMs and government agencies.

Differentiator

Problem solved

Functional benefit

Products and services

• Aerostructures Build-to-Print Manufacturing Metallic and composite aerostructures manufacturing to customer specifications, including wing leading edges, slats, flaps, ailerons, spoilers, fuselage sections, doors, engine pylons, machined components, formed sheet metal structures, composite parts, and final assembly. Services include small/long-bed machining, hard metal machining, large/small sheet forming, hand lay-up and advanced composite manufacturing, metal bonding, and manual/automated structural and electro-mechanical assembly. Target customers are aerospace OEMs (Airbus, Boeing, Embraer, Bombardier, Dassault).
• Aerostructures Design & Build Integrated design-and-build of complex aerostructures, specializing in wing movables (control surfaces) and complex fuselages. Combines metallic and composite design expertise with manufacturing capability, leveraging SQRTM/RTM out-of-autoclave processes for co-cured integrated structures. Target customers are OEMs seeking design ownership transfer and one-stop-shop accountability for aerostructure development.
• Engineering Services End-to-end mechanical design, embedded systems development, advanced numerical simulations, prototyping and testing, tooling and manufacturing engineering, flight test support, and project management. Includes global shell FEM, static, dynamic, fatigue, non-linear, and impact analysis using CATIA, SAMCEF, NASTRAN, ABAQUS, TEAM CENTER, and DELMIA platforms. Delivered by 300+ engineers across 3 locations including Everett (WA), Hurst (TX), and San Diego (CA). Target customers are aerospace OEMs and Tier-1 suppliers.
• Aftermarket & MRO Services Spare parts delivery, structural modifications and repairs, in-service engineering support, AOG (Aircraft on Ground) 24/7 support, training, and inspection services for in-service aircraft. Approved under EASA Part21G, Part145, and FAA FAR145. Contact channels include [email protected], [email protected], and [email protected]. Target customers are airlines, MRO operators, and OEM in-service support organizations.
• Space Structures & Systems Satellite platforms, launcher structures (including Ariane 6), instrument structures (MetOp MWI, ICI), electromechanical subsystems, thermal control systems, and scientific instruments for space exploration including ISS experiments and lunar programs. Backed by 15+ years of thermal analysis experience and ECSS compliance capability. Target customers are European space agencies (ESA, EUMETSAT) and satellite integrators (Airbus Defence and Space).

Quantifiable outcome

• 20-30% cost reduction with RTM/SQRTM vs traditional autoclave composite manufacturing
• +4 more outcomes

Named customers13 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Six partnerships are on record, tiered core, flagship, supporting and strategic.

• SABCAcoreStrategic or Co-development Partner · 4 June 2026BeLightning consortium partnership with SABCA and Asco Industries (Montana Aerospace) for F-35 horizontal tail production in Belgium. First F-35A horizontal tail entirely manufactured in Belgium, marking Belgium's entry into F-35 global supplier network.
• Aciturri AerostructuresflagshipStrategic or Co-development Partner · 3 October 2025Sonaca acquired 51% of Aciturri's aerostructures activities in H2 2025, creating a combined entity with complementary capabilities. Sonaca brings metallic structures expertise while Aciturri contributes composite aerostructures leadership. Combined entity has 6,700+ employees, €1.2B revenue, and nearly $10B backlog.
• Wisk AerocoreStrategic or Co-development Partner · 10 April 2024Sonaca became strategic supplier for Wisk's 6th Generation autonomous air taxi. Responsible for developing and producing primary structural assemblies including wing, horizontal tail, and control surfaces. Leverages global manufacturing footprint across Belgium, Brazil, Romania, and USA.
• NeoparksupportingOthers · 22 February 2024Solar energy partnership for photovoltaic panel installation at Gosselies site. Neopark is a joint venture between Ceneo (energy financing) and Enerdeal (solar development). 3 MWp installation producing ~3 GWh/year, covering 12% of electricity needs.
• Space Application ServicesstrategicStrategic or Co-development Partner · 22 January 2024Collaboration on StarFab space factory prototype and lunar system component as part of European Horizon Europe research programme. Space Application Services leads consortium with Sonaca contributing structural expertise for automated warehouse in zero gravity.
• WINGS (Walloon Innovations for Green Skies)strategicStrategic or Co-development Partner · 10 January 2024Third phase of innovation partnership with 17 industry partners including Safran Aero Boosters, backed by Walloon Government. Focus on decarbonizing aviation toward low-carbon aircraft by 2035 and carbon neutrality by 2050.

Scale indicators11 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Spirit AeroSystems: World's largest independent aerostructures supplier, producing fuselages, wings, pylons, and nacelles for Airbus, Boeing, and other OEMs. Direct competitor to Sonaca in the tier-1 aerostructures market across commercial and defense programs.
• GKN Aerospace: Major tier-1 aerostructures and engine components supplier, part of Melrose Industries. Competes directly with Sonaca in wing and fuselage components, transparencies, and specialized assemblies across civil and defense aerospace.
• Premium AEROTECH (Aernnova): Spanish aerostructures manufacturer supplying wings, empennage, and fuselage components to Airbus and other OEMs. Comparable in scale and capability to Sonaca's aerostructures business, including composites and metallic structures.
• Triumph Group: US-based tier-1 supplier of aerostructures, mechanical systems, and integrated solutions for commercial, business, and military aviation. Overlaps with Sonaca in structural assemblies and components for major OEM platforms.
• Latécoère: French tier-1 aerostructures supplier specializing in fuselage sections, doors, and wiring for Airbus and other OEMs. Closely comparable to Sonaca in metallic aerostructures and door manufacturing, with similar geographic proximity to Airbus.
• Magellan Aerospace: Canadian aerospace supplier providing complex aerostructures, assemblies, and components for civil and defense markets. Comparable to Sonaca in metallic aerostructures manufacturing, machining capabilities, and tier-1 OEM relationships.

Regional players

• Kawasaki Heavy Industries Aerospace: Japanese aerospace division manufacturing aircraft structures and components for Boeing and Japanese defense programs. Comparable aerostructures capability but primarily serves Asia-Pacific customers rather than competing directly with Sonaca in Europe/North America.
• Mitsubishi Heavy Industries: Japanese industrial conglomerate with major aerospace business producing wings, fuselage sections, and other aerostructures for Boeing 787 and other programs. Comparable tier-1 capability but operating primarily in Asia-Pacific rather than Sonaca's core geographies.

Broad incumbents

• Airbus Atlantic (formerly Stelia Aerospace): Airbus-owned aerostructures subsidiary producing fuselage sections, aerostructure assembly, and metallic/composite components. Overlaps with Sonaca as a tier-1 aerostructures supplier but operates within the OEM parent's vertical integration strategy.
• Leonardo: Italian aerospace and defense prime contractor with aerostructures, helicopters, and aircraft systems businesses. Sonaca supplies components to Leonardo's NH90 and other programs; Leonardo represents a broader incumbent with overlapping structural capabilities and a major European defense customer relationship.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/sonaca
• LinkedInlinkedin.com/company/sonaca

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Sonaca