S3 AeroDefense,

S3 AeroDefense, LLC supplies military aircraft spares, component repair and engineering solutions to military operators in more than 55 countries. It was founded as S3 International in 2005 and works from a 73,000 square foot facility in Milwaukee, Wisconsin.

Parts and services

• Spares: authorized stocking distributor for Arrowhead Products, Collins Aerospace, Honeywell Aerospace, Moog, Triumph Aerospace, Parker Aerospace and other OEMs
• Repairs: FAA and EASA approved repair facility and authorized repair center for CEF, Collins Aerospace, Honeywell, Moog, Triumph Aerospace and Whippany Actuation Systems
• Solutions: upgrades, modifications and performance based logistics for fleets and missions

Aircraft and platforms supported

The website lists the F-5, F-15, F-16, F-18, T-50, C-130, P-3, C-27J, C-17, CH-47, UH-60, AH-64, Bell 412, KUH-1 Surion, CN-235, C-295 and Cessna 208 among its supported platforms. Customers are military operators, MROs and government agencies.

Company facts

• Founded in 2005 as S3 International by Aksel Sidem, Jeff Wnuk and Sebastien Imbert
• Quality approvals listed on its site: ISO 9001:2015 and AS9110C, AS9120, UK CAA UK.145.50699, FAA 9S3R896B and EASA 145.6559
• CAGE code 4GPC1
• ASA-100 listing, as reported in the ASA FAA AC 00-56B accreditation database
• States compliance with US export control and import laws