AMC1 21L.B.144(d)

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

AMC1 21L.B.144(d);(e) and 21L.B.184(d);(e) Oversight programme ED Decision 2023/013/R EXTENSION OF THE OVERSIGHT PLANNING CYCLE BEYOND 24 MONTHS (a)     Part 21 Light Subparts G and J do not include requirements for the implementation of a safety management system. However, a declared production organisation or a declared design organisation may decide to introduce certain elements of a safety management system as defined in Part 21 points [21.A.139](#_DxCrossRefBm1649096881) and [21.A.239](#_DxCrossRefBm1649096880) (e.g. safety risk management, safety performance monitoring and measurement). When such elements are voluntarily introduced, the competent authority may consider them to substantiate an extension of the oversight planning cycle beyond 24 months, as specified in points [21L.B.144](#_DxCrossRefBm1649098175)(d) and (e) and in points [21L.B.184](#_DxCrossRefBm1649098279)(d) and (e). (b)     If the competent authority applies an extended oversight planning cycle (i.e. that exceeds 24 months), it should perform, at a minimum, one annual review (see AMC1 21L.B.144 and point [21L.B.184](#_DxCrossRefBm1649098279) ‘Oversight programme’) to validate the oversight programme. (c)      If the results of the annual review indicate a decrease in the safety performance of the organisation, the competent authority should revert to a 24-month (or shorter) oversight planning cycle and review the oversight programme accordingly. ##### AMC1 21L.B.144(d);(e) and 21L.B.184(d);(e) Oversight programme *ED Decision 2023/013/R* **EXTENSION OF THE OVERSIGHT PLANNING CYCLE BEYOND 24 MONTHS** (a) Part 21 Light Subparts G and J do not include requirements for the implementation of a safety management system. However, a declared production organisation or a declared design organisation may decide to introduce certain elements of a safety management system as defined in Part 21 points [21.A.139](#_DxCrossRefBm485230371) and [21.A.239](#_DxCrossRefBm485230370) (e.g. safety risk management, safety performance monitoring and measurement). When such elements are voluntarily introduced, the competent authority may consider them to substantiate an extension of the oversight planning cycle beyond 24 months, as specified in points [21L.B.144](#_DxCrossRefBm485231672)(d) and (e) and in points [21L.B.184](#_DxCrossRefBm485231776)(d) and (e). (b) If the competent authority applies an extended oversight planning cycle (i.e. that exceeds 24 months), it should perform, at a minimum, one annual review (see AMC1 21L.B.144 and point [21L.B.184](#_DxCrossRefBm485231776) ‘Oversight programme’) to validate the oversight programme. (c) If the results of the annual review indicate a decrease in the safety performance of the organisation, the competent authority should revert to a 24-month (or shorter) oversight planning cycle and review the oversight programme accordingly.