21.A.431A Scope

• Regulation (EU) 2019/897 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.431A Scope Regulation (EU) 2019/897 (a)     This Subpart establishes the procedure for the approval of a repair design of a product, part or appliance and establishes the rights and obligations of the applicants for, and holders of, those approvals. (b)     This Subpart defines standard repairs that are not subject to an approval process under this Subpart. (c)      A “repair” means the elimination of damage and/or restoration to an airworthy condition following the initial release to service by the manufacturer of any product, part or appliance. (d)     The elimination of damage by replacement of parts or appliances without the necessity for design activity shall be considered as a maintenance task and shall therefore require no approval under this Annex. (e)     A repair to an ETSO article other than an Auxiliary Power Unit (APU) shall be treated as a change to the ETSO design and shall be processed in accordance with point [21.A.611](#_DxCrossRefBm1649097039). (f)      In this Subpart, the references to type-certificates include type-certificates and restricted type-certificates. #### 21.A.431A Scope *Regulation (EU) 2024/1108* (a) This Subpart establishes the procedure for the approval of a repair design of a product, part, appliance, CMU or CMU component, and establishes the rights and obligations of the applicant for, and holder of, that approval. (b) This Subpart defines standard repairs that are not subject to an approval process under this Subpart. (c) A “repair” means the elimination of damage and/or restoration to an airworthy condition following the initial release to service by the manufacturer of any product, part, appliance, CMU or CMU component. (d) The elimination of damage by replacement of parts, appliances or CMU components without the necessity for design activity shall be considered a maintenance task and shall, therefore, require no approval under this Annex. (e) A repair to an ETSO article other than an Auxiliary Power Unit (APU) shall be treated as a change to the ETSO design and shall be processed in accordance with point [21.A.611](#_DxCrossRefBm485230530). (f) In this Subpart, the references to type-certificates include type-certificates and restricted type-certificates.