SIC 3724 — Aircraft Engines and Engine Parts
Description & Classification
SIC code 3724 representing 'Aircraft Engines and Engine Parts' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 336412 - Aircraft Engine and Engine Parts Manufacturing (via SIC1987:3724→NAICS1997:336412→2002:336412→2007:336412→2012:336412→2017:336412→2022:336412)
- NAICS 541714 - Research and Development in Biotechnology (except Nanobiotechnology) (via SIC1987:3724→NAICS1997:54171→2002:541710→2007:541711→2012:541711→2017:541714→2022:541714)
- NAICS 541713 - Research and Development in Nanotechnology (via SIC1987:3724→NAICS1997:54171→2002:541710→2007:541711→2012:541711→2017:541713→2022:541713)
- NAICS 541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) (via SIC1987:3724→NAICS1997:54171→2002:541710→2007:541712→2012:541712→2017:541715→2022:541715)
Classification Details
| SIC Code | 3724 |
|---|---|
| Industry Title | Aircraft Engines and Engine Parts |
| Division | Division D: Manufacturing |
| Major Group | Major Group 37: Transportation Equipment |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 3724:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 37 Hub — View other legacy industries in this business division.
Related Industries in Major Group 37
Frequently Asked Questions (FAQ)
What industry does SIC code 3724 represent?
SIC 3724 is 'Aircraft Engines and Engine Parts', a 4-digit Standard Industrial Classification (SIC) code under Major Group 37: Transportation Equipment (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 336412 (Aircraft Engine and Engine Parts Manufacturing), 541714 (Research and Development in Biotechnology (except Nanobiotechnology)).
What is the modern 2022 NAICS mapping for SIC 3724?
SIC code 3724 maps to modern NAICS codes: 336412 - Aircraft Engine and Engine Parts Manufacturing, 541714 - Research and Development in Biotechnology (except Nanobiotechnology), 541713 - Research and Development in Nanotechnology, 541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).