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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 or 21.A.35.

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(c).