Last updated: April 17, 2026
Key Takeaways
- The US aerospace parts market reached $158.11 billion in 2025, with 50+ certified manufacturers across OEM, Tier 1, mid-tier, and PMA segments.
- Major suppliers include Boeing, Lockheed Martin, Spirit AeroSystems, and Precision Advanced Manufacturing for CNC machining and assemblies with AS9100-level and ITAR-compliant quality systems.
- Buyers reduce compliance risk by verifying certifications through FAA DRS for PMA, the IAQG database for AS9100, and the State Department for ITAR.
- Boeing relies on Spirit for fuselages, Parker Hannifin for hydraulics, and mid-tier specialists such as Precision Advanced Manufacturing for precision components.
- Precision Advanced Manufacturing supports aerospace programs with integrated, scalable manufacturing that covers prototypes, qualification runs, and sustained production.
Top US Certified Aerospace Parts Manufacturers (Tiered Directory)
The US aerospace parts manufacturing market reached $158.11 billion in 2025, with certified suppliers organized across distinct tiers serving different program requirements. The following tables outline these tiers, starting with OEMs that design and build complete aircraft, followed by Tier 1 suppliers that provide major assemblies, mid-tier precision manufacturers that focus on complex machining and fabrication, and PMA or aftermarket specialists that supply replacement parts.
| Tier 1 OEMs | Certifications | Key Parts/Locations | Website |
|---|---|---|---|
| Boeing | AS9100D | Commercial aircraft, 787 Dreamliner/WA | boeing.com |
| Lockheed Martin | AS9100D/ITAR | Military aircraft, F-35/TX, CA | lockheedmartin.com |
| Northrop Grumman | AS9100D/ITAR | Defense systems, B-21/CA | northropgrumman.com |
| Raytheon Technologies | AS9100D/ITAR | Propulsion, avionics/CT, AZ | rtx.com |
| Tier 1 Suppliers | Certifications | Key Parts/Locations | Website |
|---|---|---|---|
| Spirit AeroSystems | AS9100D | Fuselages, wing structures/KS | spiritaero.com |
| Parker Hannifin | AS9100D | Hydraulic systems, actuators/OH | parker.com |
| Triumph Group | AS9100D | Wing components, landing gear/PA | triumphgroup.com |
| Barnes Aerospace | AS9100D/NADCAP | Engine components, nacelles/CT | barnesaerospace.com |
| Mid-Tier Precision | Certifications | Key Parts/Locations | Website |
|---|---|---|---|
| Precision Advanced Manufacturing | AS9100D/ITAR/ISO9001 | CNC/sheet fab/welding/CA, TX | precisionam.com |
| Albers Aerospace | AS9100D/NADCAP | Precision machining/Fremont, CA | albersaerospace.com |
| Bart Manufacturing | AS9100D | CNC machining/Fremont, CA | bartmfg.com |
| Pacific Aerospace | AS9100D/ITAR | Composites, tooling/Stanton, CA | pacificaerospace.com |
| PMA/Aftermarket | Certifications | Key Parts/Locations | Website |
|---|---|---|---|
| McFarlane Aviation | FAA-PMA | Replacement parts, modifications/KS | mcfarlane-aviation.com |
| HEICO Corporation | FAA-PMA/AS9100D | Aftermarket parts/FL | heico.com |
| Champion Aerospace | AS9100D/ISO9001 | Spark plugs, igniters/SC | championaerospace.com |
Additional certified mid-tier manufacturers from the Kokoquest January 2026 directory include Ram Aerospace (Brea, CA), FMI Aerostructures (Valencia, CA), Verus Aerospace (Torrance, CA), Brek Manufacturing (Gardena, CA), OGS Industries (Akron, OH), and Applied Aerospace & Defense with facilities across CT, MA, CA, AL, and WA. Among these mid-tier precision manufacturers, certain capabilities distinguish top performers from the broader field.
Why Precision Advanced Manufacturing Leads Mid-Tier Certified Airplane Parts
Precision Advanced Manufacturing delivers mission-critical aerospace components through integrated facilities in California and Texas that hold AS9100D, ISO 9001, and ITAR registrations. The team combines advanced multi-axis CNC machining, precision sheet fabrication, specialty welding, and finishing services to achieve ±0.002″ tolerances while maintaining strong yield performance.
The company’s integrated capabilities remove supplier handoffs that often create delays and quality escapes. This end-to-end control supports smooth scaling from prototype development to high-volume production while preserving aerospace-grade process discipline. Recent UAV component programs highlight this approach, with complex assemblies shipped on schedule and backed by full traceability and documentation.
Their engineering-driven manufacturability approach improves designs early, which reduces rework and raises production efficiency. This design support, combined with multi-shift capacity, enables sustained production schedules that meet aggressive program timelines. Certified quality management systems reinforce these strengths by ensuring compliance with stringent aerospace and defense requirements. Discuss your aerospace manufacturing requirements with their engineering team to evaluate fit for your next program.
How to Verify FAA, AS9100, and ITAR Certifications for Airplane Parts Suppliers
Buyers protect their programs by verifying supplier certifications through official regulatory and industry databases. For FAA PMA approvals, search the FAA Dynamic Regulatory System by PMA holder, part number, or approved aircraft make and model. The PMA Supplement lists eligible installations and reflects FAA Order 8110.42D requirements.
Buyers confirm AS9100 registration through the International Aerospace Quality Group database, which shows current certification status and scope. ITAR compliance checks rely on the State Department’s Directorate of Defense Trade Controls registration database, which confirms whether a supplier is registered to handle controlled technical data and defense articles.
Proper documentation also plays a central role in verification. FAA Form 8130-3 Authorized Release Certificates confirm that parts were produced under FAA-approved systems and are airworthy at the time of release. Certificates of Conformance from manufacturers verify that production followed approved design data and documented quality processes.
How Boeing and Other OEMs Structure Their Supplier Base
| Supplier | Parts | Certifications | Market Role |
|---|---|---|---|
| Precision Advanced Manufacturing | Precision assemblies | AS9100D/ITAR | Mid-tier leader |
| Spirit AeroSystems | Fuselages, wing structures | AS9100D | One of the largest independent |
| Triumph Group | Wing components | AS9100D | Major Tier 1 |
| Parker Hannifin | Hydraulic systems | AS9100D | Systems leader |
Boeing’s supply chain spans thousands of certified suppliers that support structural components, propulsion systems, avionics, landing gear, and interior systems. The key suppliers highlighted earlier, including Spirit AeroSystems and Parker Hannifin, represent only a portion of this broader network. OEMs hold a significant share of the global aerospace parts market, with Tier 1 suppliers providing major assemblies and mid-tier specialists such as Precision Advanced Manufacturing supplying precision-machined components that feed into those larger systems.
2026 Updates and Trends in US Aerospace Manufacturing
Reshoring initiatives are accelerating across US aerospace manufacturing as global trade tensions and tariff shifts prompt domestic production investments. These reshoring moves support a US aerospace parts market that is projected to grow steadily through 2035, driven by defense spending, commercial aircraft demand, and expanding aftermarket activity.
Industry consolidation continues to reshape the supplier landscape. Recent examples include VSE Corporation’s $2.025 billion acquisition of Precision Aviation Group and Howmet Aerospace’s $1.8 billion purchase of Consolidated Aerospace Manufacturing. These transactions expand aftermarket services and deepen supply chain capabilities for OEMs and airlines.
Precision Advanced Manufacturing’s experience in UAV and space applications positions the company well for emerging markets such as urban air mobility and satellite constellations. Their precision machining, complex assembly, and documentation practices align with the tighter tolerances and reliability expectations in these sectors. Explore how their UAV and space expertise can support your next-generation aerospace programs.
Frequently Asked Questions
What companies make airplane parts in the United States?
US airplane parts manufacturers span multiple tiers that cover complete aircraft, major assemblies, and detailed components. OEMs include Boeing, Lockheed Martin, and Northrop Grumman. Tier 1 suppliers include Spirit AeroSystems, Parker Hannifin, and Triumph Group. Mid-tier precision manufacturers include Precision Advanced Manufacturing, Albers Aerospace, and Bart Manufacturing. PMA and aftermarket suppliers include McFarlane Aviation and HEICO Corporation. The industry includes over 111 AS9100-registered manufacturers across machining, fabrication, and assembly operations.
Who makes the parts for Boeing aircraft?
Boeing sources components from thousands of certified suppliers across the United States and globally. As outlined earlier, primary structural suppliers include Spirit AeroSystems for fuselages and wing structures, Parker Hannifin for hydraulic systems, and Triumph Group for wing components. Mid-tier specialists such as Precision Advanced Manufacturing support this network with precision-machined assemblies that integrate into larger structures and systems.
Are McFarlane Aviation parts FAA approved?
Yes, McFarlane Aviation holds FAA Parts Manufacturer Approval (PMA) for replacement parts and modifications. Their components meet or exceed original airworthiness standards and are approved for installation on specific aircraft makes and models as documented in their PMA supplements. McFarlane Aviation operates under FAA-approved quality systems that maintain full traceability and documentation.
What is the difference between AS9100 and PMA certification?
AS9100 is a quality management system standard for aerospace manufacturing that focuses on consistent processes, risk management, and quality control. PMA, or Parts Manufacturer Approval, is an FAA design and production approval for specific replacement parts. AS9100 registration demonstrates that a manufacturer maintains robust quality systems, while PMA approval confirms that particular parts meet airworthiness standards and are eligible for installation on approved aircraft.
Who are the big four aerospace companies?
The big four US aerospace and defense companies are Boeing, Lockheed Martin, Northrop Grumman, and Raytheon Technologies (now RTX Corporation). These OEMs design and manufacture complete aircraft and defense systems while sourcing components from extensive supply chains of Tier 1 and mid-tier manufacturers. They maintain AS9100D-level quality systems and operate under strict process controls for both commercial and defense applications.
Selecting the right certified aerospace parts manufacturer starts with careful verification of certifications, capabilities, and performance history. Precision Advanced Manufacturing stands out as a strong mid-tier option for precision-machined components, with integrated services, proven quality, and scalable production capacity. Get a detailed quote for your mission-critical aerospace components to confirm pricing, lead times, and technical fit for your program.
