GM1 21.B.75 Special conditions

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

GM1 21.B.75 Special conditions ED Decision 2021/001/R GENERAL The term ‘novel or unusual design features’ should be judged in view of the applicable certification basis for the product. A design feature, in particular, should be judged to be a ‘novel or unusual design feature’ when the certification basis does not sufficiently cover this design. The term ‘unsafe condition’ is used with the same meaning as described in [GM1 21.A.3B(b)](#_DxCrossRefBm1649096902). The term ‘newly identified hazards’ is intended to address new risks that may be recognised in the design (e.g. questionable features) or its operational characteristics (e.g. volcanic ash) for which there is not yet enough in-service experience. ##### GM1 21.B.75 Special conditions *ED Decision 2021/001/R* GENERAL The term ‘novel or unusual design features’ should be judged in view of the applicable certification basis for the product. A design feature, in particular, should be judged to be a ‘novel or unusual design feature’ when the certification basis does not sufficiently cover this design. The term ‘unsafe condition’ is used with the same meaning as described in [GM1 21.A.3B(b)](#_DxCrossRefBm485230393). The term ‘newly identified hazards’ is intended to address new risks that may be recognised in the design (e.g. questionable features) or its operational characteristics (e.g. volcanic ash) for which there is not yet enough in-service experience.