EASA Certification Memoranda clarify the European Union Aviation Safety Agency’s general position on specific initial airworthiness, validation, continuing airworthiness or organisational items. They are intended to provide guidance on a particular subject and may provide complementary information for compliance demonstration, similar to acceptable means of compliance and guidance material (AMC & GM), even if not formally adopted through an ED Decision. Certification Memoranda are not intended to introduce new certification requirements or to modify existing certification requirements.
You can download below the full list of Certification Memoranda. The individual Certification Memoranda are available at Product Certification Consultations and Publications.