AMC1 21.A.804(b) Identification of parts and appliances

• ED Decision 2021/001/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

AMC1 21.A.804(b) Identification of parts and appliances ED Decision 2021/001/R EASA AGREEMENT FOR THE DESIGN APPROVAL HOLDER TO DEROGATE FROM POINT [21.A.804](#_DxCrossRefBm1649097091)(a) A design approval holder may apply point [21.A.804](#_DxCrossRefBm1649097091)(a) or make use of the derogation defined in point [21.A.804](#_DxCrossRefBm1649097091)(b) by clarifying, in the relevant procedures, the conditions (e.g. the minimum dimensions of a (flat) area on a part suitable for marking) in which the marking on the part may be completely or partially omitted. This can also be supported by examples of parts or cases when certain parts do not have to be marked. In such cases, the relevant design data (e.g. drawings) should specify the contents and location of the information that could not be marked on the part (i.e. the information to be provided in the authorised release document or on the container). ##### AMC1 21.A.804(b) Identification of parts and appliances *ED Decision 2021/001/R* EASA AGREEMENT FOR THE DESIGN APPROVAL HOLDER TO DEROGATE FROM POINT [21.A.804](#_DxCrossRefBm485230582)(a) A design approval holder may apply point [21.A.804](#_DxCrossRefBm485230582)(a) or make use of the derogation defined in point [21.A.804](#_DxCrossRefBm485230582)(b) by clarifying, in the relevant procedures, the conditions (e.g. the minimum dimensions of a (flat) area on a part suitable for marking) in which the marking on the part may be completely or partially omitted. This can also be supported by examples of parts or cases when certain parts do not have to be marked. In such cases, the relevant design data (e.g. drawings) should specify the contents and location of the information that could not be marked on the part (i.e. the information to be provided in the authorised release document or on the container).