UNE-EN 9116:2025

This document defines the common NOC requirements for aviation, space, and defence organisations. Included are the requirements that an internal/external supplier or subcontractor need to use when submitting a NOC to the customer for either change authorization or notification. A NOC informs the customer of physical or functional (e.g. design, material, software) changes or any associated process changes to an established baseline configuration.

Retention of the NOC establishes a means of configuration control and captures the evolution of the part. This requirement is of utmost importance in commercial/civil aviation products where changes to type certificated products are mandated by regulations; however, these same concepts are also required in defence and space applications per contractual requirements.

Where there are changes to items which the organization does not have design input or is not permitted to make any changes to the design [e.g. build to print, Technical Standard Order (TSO) articles]. Change requests need to be formally submitted to the customer and approved via the customer s change request process.

This document is not applicable to commercial parts [off-the-shelf items not specifically designed for aviation, space, or defence products; aka Commercial off-the-Shelf (COTS)] for which changes in product definition is not affected or known. COTS items that are modified or altered are subject to the requirements herein. When this document is applied to an organization that distributes product, then this document need to be a requirement from the distribution organization to the organization from which the product is procured.