GM1 21.A.307(b)(3) and (b)(4) Meaning of 'negligible safety effect'

• ED Decision 2021/007/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

GM1 21.A.307(b)(3) and (b)(4) Meaning of ‘negligible safety effect’ ED Decision 2021/007/R For the purpose of [21.A.307](#_DxCrossRefBm1649097401)(b)(3) and (b)(4), when ‘a part or appliance for which the consequences of non-conformity to its design has a negligible safety effect when installed on the product’ is mentioned, it means that any non-conformity of the part or appliance not identified by the installer that conducted the specific verification activities mentioned in [21.A.307](#_DxCrossRefBm1649097401)(c): (a)     for ELA1 and ELA2 aircraft, at worst: (1)     slightly reduces the operational or functional certified capabilities of the aircraft or its safety margins; (2)     causes some physical discomfort to its occupants; and (3)     slightly increases the workload of the flight crew; and (b)     for any other aircraft: (1)     has no effect on the operational or functional certified capabilities of the aircraft, or on its safety margins; (2)     causes no physical discomfort to the occupants; and (3)     has no effect on the flight crew. ##### GM1 21.A.307(b)(3) and (b)(4) Meaning of ‘negligible safety effect’ *ED Decision 2021/007/R* For the purpose of [21.A.307](#_DxCrossRefBm485230893)(b)(3) and (b)(4), when ‘a part or appliance for which the consequences of non-conformity to its design has a negligible safety effect when installed on the product’ is mentioned, it means that any non-conformity of the part or appliance not identified by the installer that conducted the specific verification activities mentioned in [21.A.307](#_DxCrossRefBm485230893)(c): (a) for ELA1 and ELA2 aircraft, at worst: (1) slightly reduces the operational or functional certified capabilities of the aircraft or its safety margins; (2) causes some physical discomfort to its occupants; and (3) slightly increases the workload of the flight crew; and (b) for any other aircraft: (1) has no effect on the operational or functional certified capabilities of the aircraft, or on its safety margins; (2) causes no physical discomfort to the occupants; and (3) has no effect on the flight crew.