AMC1 21L.A.105(a) Declaration of design compliance for minor changes

• ED Decision 2023/013/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

AMC1 21L.A.105(a) Declaration of design compliance for minor changes ED Decision 2023/013/R REQUIREMENTS FOR THE DECLARATION OF A MINOR CHANGE (a)     Applicability of point [21L.A.105](#_DxCrossRefBm1649097946) Point [21L.A.105](#_DxCrossRefBm1649097946) should be complied with by declarants for the declaration of compliance of a minor change, including design organisation approval (DOA) holders that declare compliance of minor changes under their privileges as per point (c)(3) of point [21.A.263](#_DxCrossRefBm1649096918) of Annex I (Part 21). In accordance with point [21L.A.105](#_DxCrossRefBm1649097946)(c) for declarations of compliance for minor changes, the substantiating data and the declaration of compliance required by point [21L.A.105](#_DxCrossRefBm1649097946)(a) should be produced but does not need to be submitted to EASA. They should be, however, kept on record and made available to EASA upon request during any oversight visit. (b)     The declaration process The declaration process comprises the following steps: (1)     classification of the change; (2)     applicable detailed technical specifications; (3)     determination of compliance; (4)     declaration of design compliance. (c)      Detailed technical specifications The detailed technical specifications for a minor change consist of the detailed technical specifications that were incorporated by reference in the declaration of design compliance that was submitted for the particular aircraft under Subpart C unless EASA has determined that these are no longer appropriate, and the latest detailed technical specifications should be complied with or the declarant elects to comply with these detailed technical specifications. (d)     Determination of compliance required by point [21L.A.105](#_DxCrossRefBm1649097946)(a) The declarant should determine compliance with the applicable detailed technical specifications established for the minor change for all areas that are either physically changed or functionally affected by the minor change. (1)     Means of compliance: the declarant should define and record the means (calculation, test or analysis, etc.) by which compliance is determined. [Appendix A to AMC1 21L.A.108(a)](#_DxCrossRefBm1649097955) may be used for this purpose. (2)     Compliance documents: the compliance determination should be recorded in compliance documents. For minor changes, one comprehensive compliance document may be sufficient, provided that it contains evidence of all aspects for compliance. [AMC1 21L.A.108(b)](#_DxCrossRefBm1649097954) may also be used, where applicable. (3)     Aircraft manuals: where applicable, supplements to manuals (e.g. aircraft flight manual (AFM), aircraft maintenance manual (AMM), etc.) may be issued. See also additional guidance below (point (e)) on embodiment/installation instructions. (e)     Embodiment/installation instructions The instructions for the embodiment/installation of the change (e.g. service bulletin, modification bulletin, production work order, etc.) should be defined. This may include the installation procedure, the required material, etc. ##### AMC1 21L.A.105(a) Declaration of design compliance for minor changes *ED Decision 2023/013/R* **REQUIREMENTS FOR THE DECLARATION OF A MINOR CHANGE** (a) Applicability of point [21L.A.105](#_DxCrossRefBm485231442) Point [21L.A.105](#_DxCrossRefBm485231442) should be complied with by declarants for the declaration of compliance of a minor change, including design organisation approval (DOA) holders that declare compliance of minor changes under their privileges as per point (c)(3) of point [21.A.263](#_DxCrossRefBm485230409) of Annex I (Part 21). In accordance with point [21L.A.105](#_DxCrossRefBm485231442)(c) for declarations of compliance for minor changes, the substantiating data and the declaration of compliance required by point [21L.A.105](#_DxCrossRefBm485231442)(a) should be produced but does not need to be submitted to EASA. They should be, however, kept on record and made available to EASA upon request during any oversight visit. (b) The declaration process The declaration process comprises the following steps: (1) classification of the change; (2) applicable detailed technical specifications; (3) determination of compliance; (4) declaration of design compliance. (c) Detailed technical specifications The detailed technical specifications for a minor change consist of the detailed technical specifications that were incorporated by reference in the declaration of design compliance that was submitted for the particular aircraft under Subpart C unless EASA has determined that these are no longer appropriate, and the latest detailed technical specifications should be complied with or the declarant elects to comply with these detailed technical specifications. (d) Determination of compliance required by point [21L.A.105](#_DxCrossRefBm485231442)(a) The declarant should determine compliance with the applicable detailed technical specifications established for the minor change for all areas that are either physically changed or functionally affected by the minor change. (1) Means of compliance: the declarant should define and record the means (calculation, test or analysis, etc.) by which compliance is determined. [Appendix A to AMC1 21L.A.108(a)](#_DxCrossRefBm485231451) may be used for this purpose. (2) Compliance documents: the compliance determination should be recorded in compliance documents. For minor changes, one comprehensive compliance document may be sufficient, provided that it contains evidence of all aspects for compliance. [AMC1 21L.A.108(b)](#_DxCrossRefBm485231450) may also be used, where applicable. (3) Aircraft manuals: where applicable, supplements to manuals (e.g. aircraft flight manual (AFM), aircraft maintenance manual (AMM), etc.) may be issued. See also additional guidance below (point (e)) on embodiment/installation instructions. (e) Embodiment/installation instructions The instructions for the embodiment/installation of the change (e.g. service bulletin, modification bulletin, production work order, etc.) should be defined. This may include the installation procedure, the required material, etc.