BS EN 9138:2019 pdf free.Aerospace Series一Quality Management Systems一Statistical Product一Acceptance Requirements.
2 Normative references The following referenced documents are valuable for the application of specific tools presented in this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. When a conflict in requirements between this document and the referenced standards/related writings exists, the requirements of this document shall take precedence; however, nothing in this document supersedes applicable laws, regulations, and contractual requirements. 2.1 International Aerospace Quality Group publications EN 9100, Quality Management Systems一Requirements for Aviation, Space and Defence Organizations1 EN 9110, Quality Management Systems一Requirements for Aviation Maintenance Organizations1 EN 9120, Quality Management Systems – Requirements for Aviation, Space and Defence Distributors1 Supply Chain Management Handbook2 NOTE References to specific EN 9100/EN 9110/EN 9120 revision dates are included in this document in order to allow for the corresponding standard clause numbers to be identified and to recognize the potential for future changes to these standards; however, the applicable clause(s) from the latest revision have precedence. 2.2 American National Standards Institute publications ANSI/ASQ Z1.4, Sampling procedures and tables for inspection by attributes3 ANSI/ASQ Z1.9, Sampling procedures and tables for inspection by variables for percent nonconforming3 ANSI/ASQC B1, Guide for Quality Control Charts3 ANSI/ASQC B2, Method of Analyzing Data3 ANSI/ASQC B3, Controlling Quality during Production3 ANSI/ASQC S1, An Attribute Skip-Lot Sampling Program3 2.3 International Organization for Standardization publications ISO 2859-1, Sampling procedures for inspection by attributes- Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection4.Limiting Quality LQ Lot Tolerance Percent Defective (LTPD] Lot Quality Protection [LQP] Unacceptable Quality Level (UQL) Limiting Quality Level [LQL) quality parameter that is the fraction non-conforming in a lot where there is a small chance that a lot will be accepted by the specified sampling plan Note 1 to entry: For use throughout this standard, the term LQ is established at the percent non-conforming having probability of lot acceptance equal to 10 %. Note 2 to entry: For precise computation of the LQ value for finite lots of discrete parts, it is generally the case that no integer number of non-conforming units produces exactly 10% probability of acceptance, so the LQ for that sample size can be computed as the weighted average of the two nearest points on the discrete OC curve [see Annex C (C.2.2)]. BS EN 9138 pdf download.