GM1 21L.A.43(b)(4)

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

GM1 21L.A.43(b)(4);(b)(5) Declaration of design compliance ED Decision 2023/013/R SIGNED STATEMENTS All compliance-demonstration activities conducted in accordance with the compliance-demonstration plan, including all the inspections and tests and all flight tests conducted in accordance with point [21L.A.44](#_DxCrossRefBm1649097841), should be completed before signing the statements required in points (4) and (5) of point [21L.A.43](#_DxCrossRefBm1649097270)(b). ‘No feature or characteristic’ that may make the aircraft unsafe in point [21L.A.43](#_DxCrossRefBm1649097270)(b)(5) means the following: while every effort is made to address in the applicable detailed technical specifications all the risks to product safety that may be caused by the product, experience shows that safety-related events may occur with products in service, even though compliance with the applicable detailed technical specifications is fully demonstrated. One of the reasons may be that some existing risks are not properly addressed in the applicable detailed technical specifications. Therefore, the declarant should declare that they have not identified any such features or characteristics. ‘No features or characteristics’ that may make the aircraft environmentally incompatible (point [21L.A.43](#_DxCrossRefBm1649097270)(b)(5)): It is assumed that environmental compatibility is demonstrated when the aircraft complies with the applicable environmental protection requirements. Therefore, the declarant when declaring that the aircraft complies with the applicable environmental protection requirements under point [21L.A.43](#_DxCrossRefBm1649097270)(b)(4), shall also declare that they have not identified any such features or characteristics. ##### GM1 21L.A.43(b)(4);(b)(5) Declaration of design compliance *ED Decision 2023/013/R* **SIGNED STATEMENTS** All compliance-demonstration activities conducted in accordance with the compliance-demonstration plan, including all the inspections and tests and all flight tests conducted in accordance with point [21L.A.44](#_DxCrossRefBm485231337), should be completed before signing the statements required in points (4) and (5) of point [21L.A.43](#_DxCrossRefBm485230761)(b). ‘No feature or characteristic’ that may make the aircraft unsafe in point [21L.A.43](#_DxCrossRefBm485230761)(b)(5) means the following: while every effort is made to address in the applicable detailed technical specifications all the risks to product safety that may be caused by the product, experience shows that safety-related events may occur with products in service, even though compliance with the applicable detailed technical specifications is fully demonstrated. One of the reasons may be that some existing risks are not properly addressed in the applicable detailed technical specifications. Therefore, the declarant should declare that they have not identified any such features or characteristics. ‘No features or characteristics’ that may make the aircraft environmentally incompatible (point [21L.A.43](#_DxCrossRefBm485230761)(b)(5)): It is assumed that environmental compatibility is demonstrated when the aircraft complies with the applicable environmental protection requirements. Therefore, the declarant when declaring that the aircraft complies with the applicable environmental protection requirements under point [21L.A.43](#_DxCrossRefBm485230761)(b)(4), shall also declare that they have not identified any such features or characteristics.