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Supplemental Type Certificates

Regulations & Policies

Title 14 Code of Federal Regulations

  • Part 21, Certification Procedures for Products and Parts
    • Subpart A - General
    • Subpart B - Type Certificates
    • Subpart D - Changes to Type Certificates
    • Subpart E - Supplemental Type Certificates, sections 21.111 through 21.119.
    • Section 21.113, Requirement of supplemental type certificate, permits major changes by persons other than the holder of the type certificate.
      Note: Section 21.113 revision [with subsections (a), (b), and (c)] published in the Federal Register on October 16, 2009, has effective date of April 16, 2011.

Advisory Circulars (AC)

  • AC 21-40A, Application Guide for Obtaining a Supplemental Type Certificate


  • 8110.4, Type Certification
  • 8110.48, How to Establish the Certification Basis for Changed Aeronautical Products

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