Other Aircraft Parts and Auxiliary Equipment Manufacturing
Size Standard: 1,250 employees
NAICS code 336413 covers establishments primarily engaged in manufacturing aircraft parts and auxiliary equipment not covered in other aircraft manufacturing categories. This includes landing gear, flight control surfaces, propellers, auxiliary power units, aircraft lighting, and a wide range of aircraft systems and components.
This NAICS code represents one of the best opportunities for small and mid-sized manufacturers to participate in aerospace contracting. While complete aircraft and engine manufacturing require massive capabilities, component and auxiliary equipment manufacturing spans a range of complexity and scale accessible to smaller companies.
Department of Defense spends billions annually on aircraft parts and auxiliary equipment through multiple channels. Defense Logistics Agency (DLA) manages the consumable parts supply chain. Military depots perform maintenance, modification, and upgrade programs requiring parts. Original equipment manufacturers (OEMs) flow down subcontracts for components.
The aging aircraft fleet creates sustained demand for spare parts, modifications, and upgrades. Many legacy aircraft will fly for decades, requiring ongoing parts supply even as original sources of supply (OSS) discontinue production. This creates opportunities for new manufacturers to qualify as alternate sources.
Small businesses compete effectively in specialized components, proprietary products, and through set-aside programs. Building past performance on smaller components enables progression to more complex assemblies over time.
- Defense Logistics Agency (DLA)
- U.S. Air Force (USAF)
- U.S. Navy (USN)
- U.S. Army
- NASA
- Aircraft Landing Gear Components
- Flight Control Surfaces
- Aircraft Lighting Systems
- Auxiliary Power Units
- Aircraft Propellers and Components
These certifications can help you compete for set-aside contracts under NAICS 336413:
What products are covered under NAICS 336413?
This code covers landing gear, flight control surfaces (ailerons, flaps, rudders), propellers, auxiliary power units, aircraft lighting, braking systems, actuation systems, and other aircraft parts not covered under engines (336412) or complete aircraft (336411).
What is the size standard for NAICS 336413?
The SBA size standard for NAICS 336413 is 1,250 employees, slightly lower than complete aircraft (1,500), making it more accessible for mid-sized manufacturers.
Why is this a good NAICS code for small business entry?
Aircraft parts span a wide range of complexity. Small businesses can start with simpler components and build capability over time. Set-asides, alternate source opportunities, and the extensive supply chain create multiple entry paths.
What is alternate source qualification?
When original equipment manufacturers discontinue parts, DoD qualifies alternate manufacturers. This process, often through DLA or Air Force GIDEP, allows new suppliers to produce needed parts once they demonstrate equivalent quality.
What quality certifications matter most?
AS9100 is essential for aerospace. Special process accreditation (Nadcap) may be required. ITAR registration is mandatory for defense articles. First Article Inspection (FAI) per AS9102 is typically required for new parts.
Businesses below this threshold in average annual receipts qualify as small businesses for set-aside contracts.
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