TS EN 9163

TS EN 9163 is a standard that addresses harmonized requirements for the certificate of conformity (CoC) used for aviation, space, and defence products and services. It frames how a CoC is established, what supporting documentation is expected, and how conformity is attested for the covered deliverables.

The standard provides a common CoC structure for a wide range of items, including assemblies, sub-assemblies, equipment and systems, parts, material, software, and services. It also includes a CoC template together with instructions for completing it, helping organizations prepare conformity statements in a consistent way across the supply chain. When quoted by the customer in a contractual requirement, its application becomes mandatory; otherwise, its use is recommended.

Certificate of conformity versus authorized release documents

In general technical context, a CoC is a conformity declaration used to state that a product or service meets specified requirements. This is different from Authorized Release Certificates (ARCs) used in aviation, such as EASA Form 1, FAA 8130-3, or CAAC Form 038, which are governed by the applicable authority rules for production or maintenance approval. Those ARC requirements are not covered by this document.

Why the document matters in supply chains

• Supports a harmonized format for conformity statements in aerospace supply chains.
• Clarifies the information and completion logic for a CoC.
• Can be used outside aerospace where a certificate of conformity is required.
• Helps align documentation practices without replacing authority-issued release certificates.