NAICS 336413: Other Aircraft Parts and Auxiliary Equipment Manufacturing

NAICS 336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing covers the design, development, and production of specialized components and subsystems that support aircraft functionality but are not classified as primary airframes, engines, or propulsion systems. This includes avionics housings, flight control linkages, landing gear accessories, hydraulic actuators, fuel system components, cargo handling systems, and mission-specific auxiliary equipment used in military, civil, and aerospace platforms. These parts are critical to aircraft performance, safety, and mission readiness, often requiring compliance with stringent aerospace standards such as AS9100 and FAA/EASA certifications. In government contracting, this sector supports defense modernization, fleet sustainment, and space mission reliability, serving as a vital link in the aerospace supply chain. Top contractors in this space include MERRILL CORPORATION, STARWIN INDUSTRIES, LLC, EVERSTONE INDUSTRIES LLC, ALLOY SLING CHAINS, LLC, METREA SPECIAL AEROSPACE, ISR, INC., CALADWICH CONSULTING LLC, and SAVVY BUSINESS INC. The competitive landscape is dominated by small businesses and niche manufacturers with specialized engineering capabilities, often supplying precision-machined or custom-fabricated components under sole-source or limited-bid contracts. Many firms operate with ITAR and DFARS compliance, serving as tier-two or tier-three suppliers to larger primes. The Department of Defense, including its DLA Land and Maritime division, is the primary buyer, driven by sustainment needs for legacy and next-generation platforms. The National Aeronautics and Space Administration also procures components for spacecraft and launch systems requiring high-reliability, low-volume production. Demand is tied to fleet modernization, depot-level maintenance, and space exploration initiatives. The market offers high opportunity density for agile, certified manufacturers with niche technical expertise. Procurement trends favor qualified small businesses, sole-source engagements for proprietary designs, and rapid prototyping capabilities. Suppliers with experience in aerospace-grade materials, non-destructive testing, and defense supply chain security are best positioned to compete.