Registry · SIC Index · Group 37

SIC 3724 — Aircraft Engines and Engine Parts

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)).

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:

Classification Details

SIC Code3724
Industry TitleAircraft Engines and Engine Parts
DivisionDivision D: Manufacturing
Major GroupMajor Group 37: Transportation Equipment
Source / VerifiedUS Census 1987 SIC Concordance / 2026-06-28

Related Resources & Compliance Guides

Further regulatory reference links for legacy SIC code 3724:

Related Industries in Major Group 37

3711 - Motor Vehicles and Passenger Car Bodies...3713 - Truck and Bus Bodies...3714 - Motor Vehicle Parts and Accessories...3715 - Truck Trailers...3716 - Motor Homes...3721 - Aircraft...3728 - Aircraft Parts and Auxiliary Equipment, ...3731 - Ship Building and Repairing...

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).