GM 21.A.20(b) Reporting on the compliance demonstration process

• ED Decision 2019/018/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

GM 21.A.20(b) Reporting on the compliance demonstration process ED Decision 2019/018/R The applicant should report to EASA any unexpected difficulty or event encountered during the compliance demonstration that invalidates or appreciably affects the assumptions previously made, for example: — an increase in the severity of the consequences of a certain condition (e.g. failure mode) of the product; — significantly reduced margin(s) for the ‘pass–fail’ criteria of the compliance demonstration; — changes to the test sequences and conditions that are not in line with the certification specifications or guidance; — an unusual interpretation of the results of the compliance demonstration; and — any significant failure or finding resulting from the tests performed as per points [21.A.33](#_DxCrossRefBm1649096983) or [21.A.35](#_DxCrossRefBm1649096994). The applicant should also evaluate whether the unexpected difficulty or event encountered will impact on the certification programme and, if necessary, amend it as per point [21.A.15](#_DxCrossRefBm1649096854)(c). ##### GM 21.A.20(b) Reporting on the compliance demonstration process *ED Decision 2019/018/R* The applicant should report to EASA any unexpected difficulty or event encountered during the compliance demonstration that invalidates or appreciably affects the assumptions previously made, for example: — an increase in the severity of the consequences of a certain condition (e.g. failure mode) of the product; — significantly reduced margin(s) for the ‘pass–fail’ criteria of the compliance demonstration; — changes to the test sequences and conditions that are not in line with the certification specifications or guidance; — an unusual interpretation of the results of the compliance demonstration; and — any significant failure or finding resulting from the tests performed as per points [21.A.33](#_DxCrossRefBm485230474) or [21.A.35](#_DxCrossRefBm485230485). The applicant should also evaluate whether the unexpected difficulty or event encountered will impact on the certification programme and, if necessary, amend it as per point [21.A.15](#_DxCrossRefBm485230344)(c).