Analysis
NAICS 336412 is the 2022 national industry for aircraft engine and engine parts manufacturing, part of 33641 (Aerospace Product and Parts Manufacturing). Census lists 12 example activities under it in the official index.
Between 2018 and 2023 the number of establishments fell 23% and employment fell 4%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
County Business Patterns counts 440 US establishments in this code in 2023, employing 75,499 people at an average annual payroll of $100,996 per employee (85th percentile of national industries). 21% of the establishments have fewer than five employees, which points to larger operations.
Census lists 5 related activities that belong elsewhere, most often in 336415, 336310, 488190 and 541715. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.
Its index entries, the activities Census uses to assign businesses to this code, include aircraft engine and engine parts (except carburetors…, aircraft engine overhauling, aircraft engine rebuilding and aircraft turbines manufacturing, among 12 in all.
Its goods appear in 20 statistical lines of the US tariff schedule, mostly under headings 8411 (turbojets, turbopropellers and other gas turbines, and…), 8407 (spark-ignition reciprocating or rotary internal combustion…) and 8409 (parts suitable for use solely or principally with the…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.
Official definition
This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing aircraft engines and engine parts; (2) developing and making prototypes of aircraft engines and engine parts; (3) aircraft propulsion system conversion (i.e., major modifications to systems); and (4) aircraft propulsion systems overhaul and rebuilding (i.e., periodic restoration of aircraft propulsion system to original design specifications).
Source: US Census Bureau, NAICS 2022 Manual.
Not this code if…
| The business mainly does | Use instead |
|---|---|
| Manufacturing guided missile and space vehicle propulsion units and parts | 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing |
| Manufacturing aircraft intake and exhaust valves and pistons and aircraft internal combustion engine filters | 336310 Motor Vehicle Gasoline Engine and Engine Parts Manufacturing |
| The repair of aircraft engines (except overhauling, conversion, and rebuilding) | 488190 Other Support Activities for Air Transportation |
| Research and development establishments primarily engaged in aircraft engine and engine parts R&D (except prototype production) | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) |
| Manufacturing aeronautical instruments | 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing |
Index entries (12)
- Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing
- Aircraft engine overhauling
- Aircraft engine rebuilding
- Aircraft turbines manufacturing
- Developing and producing prototypes for aircraft engines and engine parts
- Engines and engine parts, aircraft (except carburetors, pistons, piston rings, valves), manufacturing
- Gas turbines, aircraft, manufacturing
- Gasoline engine parts (except carburetors, pistons, piston rings, valves), aircraft, manufacturing
- Gasoline engines, aircraft, manufacturing
- Internal combustion engines, aircraft, manufacturing
- Jet propulsion and internal combustion engines and parts, aircraft, manufacturing
- Rocket engines, aircraft, manufacturing