You can download BS EN 9131:2020 pdf.Aerospace series – Quality Management Systems – Nonconformance Data Definition and Documentation.
This document defines the common nonconformity data definition and documentation that shall be exchanged between an internal/external supplier or sub-tier supplier, and the customer when informing about a nonconformity requiring formal decision. The requirements are applicable, partly or totally, when reporting a product nonconformity to the owner or operator, as user of the end item (e.g., engine, aircraft, spacecraft, helicopter), if specified by contract.
Reporting of nonconformity data, either electronically or conventionally on paper, is subject to the terms and conditions of the contract. This also includes, where applicable, data access under export control regulations.
Purpose
The process of exchanging, coordinating, and approving nonconformity data via concession or product quality escape varies with the multiple relationships and agreements among all parties concerned. The information provided by this document forms architecture for submitting and managing data that allows for concise and accurate communication using various documented methods. The main objective of this document is to provide the definition of a data set that can be integrated into any form of communication (e.g., electronic data interchange, submission of conventional paper forms).
5.2 Nonconformity cause codes
The causes of process deviations are defined in Table 2. The categorization of the list is set up to facilitate the use of process improvement tools (e.g., cause and effect diagram). The ‘Main Term’ code can be used as the cause code, if appropriate, or further definition may be provided.
NOTE 1 One or more cause codes may be used to define the cause(s) for a product nonconformity.
NOTE 2 The allocation of a cause code could be either apparent (preliminary/initial) or final, depending on the status of root cause analysis. For further support, see EN 9136 and the SCMH (“Root Cause Analysis and Problem Solving” chapter).
5.3 Nonconformity Corrective Action Codes
Common corrective action codes are defined in Table 3; intended to correspond directly to the cause codes identified in Table 2, as appropriate.
NOTE One or more corrective action codes may be used to define the corrective action(s) taken for a product nonconformity/cause code.