21.A.126 Production inspection system

• Regulation (EU) 2022/201 found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)
• Regulation (EU) 2024/1108 found in: Initial Airworthiness and Environmental Protection (748/2012) (Nov 2025)

21.A.126 Production inspection system Regulation (EU) 2022/201 (a)     The production inspection system required under point [21.A.125A](#_DxCrossRefBm1649096929)(a) shall provide a means for determining that: 1.       incoming materials, and bought or subcontracted parts, used in the finished product are as specified in the applicable design data; 2.       incoming materials, and bought or subcontracted parts, are properly identified; 3.       processes, manufacturing techniques and methods of assembly affecting the quality and safety of the finished product are accomplished in accordance with specifications accepted by the competent authority; 4.       design changes, including material substitutions, have been approved under Subpart D or E and controlled before being incorporated in the finished product. (b)     The production inspection system required by point [21.A.125A](#_DxCrossRefBm1649096929)(a), shall also be such as to ensure that: 1.       parts in process are inspected for conformity with the applicable design data at points in production where accurate determinations can be made; 2.       materials subject to damage and deterioration are suitably stored and adequately protected; 3.       current design drawings are readily available to manufacturing and inspection personnel, and used when necessary; 4.       rejected materials and parts are segregated and identified in a manner that precludes installation in the finished product; 5.       materials and parts that are withheld because of deviations from type design or production specifications, and that are to be considered for installation in the finished product, are subjected to an approved engineering and manufacturing review procedure. Those materials and parts that have been found in that procedure to be serviceable shall be properly identified and reinspected if it is necessary to be reworked or repaired. Materials and parts rejected in that procedure shall be marked and disposed of to ensure that they are not incorporated in the final product. #### 21.A.126 Production inspection system *Regulation (EU) 2024/1108* (a) The production inspection system required under point [21.A.125A](#_DxCrossRefBm485230420)(a) shall provide a means for determining that: 1. incoming materials and bought or subcontracted parts are as specified in the applicable design data; 2. incoming materials, and bought or subcontracted parts, are properly identified; 3. processes, manufacturing techniques and methods of assembly affecting the quality and safety of the finished product, part, appliance, UAS, CMU or CMU component are accomplished in accordance with the specifications accepted by the competent authority; 4. design changes, including material substitution, have been approved under this Annex and controlled before being incorporated in the finished product part, appliance, UAS, CMU or CMU component. (b) The production inspection system required by point [21.A.125A](#_DxCrossRefBm485230420)(a), shall also be such as to ensure that: 1. parts in process are inspected for conformity with the applicable design data at points in production where accurate determinations can be made; 2. materials subject to damage and deterioration are suitably stored and adequately protected; 3. current design drawings are readily available to manufacturing and inspection personnel, and used when necessary; 4. rejected materials and parts are segregated and identified in a manner that precludes their installation in the finished product, part, appliance, CMU or CMU component; 5. materials and parts that are withheld because of deviations from type design or production specifications, and that are to be considered for installation in the finished product, part, appliance, CMU or CMU component are subjected to an approved engineering and manufacturing review procedure; those materials and parts that have been found in that procedure to be serviceable shall be properly identified and reinspected if it is necessary to be reworked or repaired; materials and parts rejected in that procedure shall be marked and disposed of to ensure that they are not incorporated in the final product;