The world of aviation revolves around rapidly changing standards. We put forth a continuing effort in staying abreast of Aerospace standards. 3S has a broad experience ranging from the basic design standards defined in Parts 23 and 25 of Title 14 CFR to industry specific standards put forth in subject-specific documents.



As an FAA STC Organization Designation Authorization (ODA), 3S provides a level of service unsurpassed in the industry today. From engineering design and system integration to documentation and certification, 3S is committed to providing professional technical guidance and exceptional customer service.



We go the extra mile to support clients through the design and implementation of our services. We provide a high quality of service and faster turnaround time on project completion than our competitors. Whether its onsite support or complete program management, our staff is at the vanguard of aviation engineering and certification.


Experts in aircraft modification and certification requirements.

Supplemental Type Certificates (STC Projects)

  • Certification Program Management - STC's from start to finish
  • Design Data Development - Electrical and Structural Design
  • Compliance Data Development - All documentation the FAA requires for your project
  • FAA interface point of contact - Project kick off meetings to full project guidance
  • Maintenance Repair and Overhaul (MRO) and Service Center Modification Projects

  • Design Data Development - Electrical and Structural Design
  • Structural and Electrical Reports - All FAA required documentation
  • Major Alteration Support with 8110-3s from appropriately rated DERs
  • Repair Station and Engineering Requirements development
  • FAA Requirement Consulting

  • Procedures Manual Development
  • In House Audits
  • Training and training program development