GM1 21L.A.85(f) Demonstration of compliance

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

GM1 21L.A.85(f) Demonstration of compliance ED Decision 2023/013/R DECLARATION OF COMPLIANCE All compliance-demonstration activities conducted in accordance with the compliance-demonstration plan, including all the testing and inspections conducted in accordance with point [21L.A.85](#_DxCrossRefBm1649097917)(c) and all flight testing conducted in accordance with point [21L.A.85](#_DxCrossRefBm1649097917)(d) and those necessary to determine compliance with the applicable environmental protection requirements should be completed before the issuance of the final declaration of compliance. ‘No feature or characteristic’ that may make the product unsafe in point [21L.A.85](#_DxCrossRefBm1649097917)(f)(2) means the following: while every effort is made to address in the applicable certification basis 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 certification basis is fully demonstrated. One of the reasons may be that some existing risks are not properly addressed in the certification basis. Therefore, the applicant should declare that it has not identified any such feature or characteristic. ‘No feature or characteristic’ that may make the changed product environmentally incompatible (point [21L.A.85](#_DxCrossRefBm1649097917)(f)(2)): It is assumed that environmental compatibility is demonstrated when the changed product complies with the applicable environmental protection requirements. Therefore, the applicant, when declaring that the changed product complies with the applicable environmental protection requirements under point [21L.A.85](#_DxCrossRefBm1649097917)(f)(1), should also declare that they have not identified any such feature or characteristic. ##### GM1 21L.A.85(f) Demonstration of compliance *ED Decision 2023/013/R* **DECLARATION OF COMPLIANCE** All compliance-demonstration activities conducted in accordance with the compliance-demonstration plan, including all the testing and inspections conducted in accordance with point [21L.A.85](#_DxCrossRefBm485231413)(c) and all flight testing conducted in accordance with point [21L.A.85](#_DxCrossRefBm485231413)(d) and those necessary to determine compliance with the applicable environmental protection requirements should be completed before the issuance of the final declaration of compliance. ‘No feature or characteristic’ that may make the product unsafe in point [21L.A.85](#_DxCrossRefBm485231413)(f)(2) means the following: while every effort is made to address in the applicable certification basis 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 certification basis is fully demonstrated. One of the reasons may be that some existing risks are not properly addressed in the certification basis. Therefore, the applicant should declare that it has not identified any such feature or characteristic. ‘No feature or characteristic’ that may make the changed product environmentally incompatible (point [21L.A.85](#_DxCrossRefBm485231413)(f)(2)): It is assumed that environmental compatibility is demonstrated when the changed product complies with the applicable environmental protection requirements. Therefore, the applicant, when declaring that the changed product complies with the applicable environmental protection requirements under point [21L.A.85](#_DxCrossRefBm485231413)(f)(1), should also declare that they have not identified any such feature or characteristic.