FAQs Supplemental Type Certificates (STC) Applications for product certification/validation of foreign certificatesCertification of products and organisations PDF What are grandfathered approvals? Answer Any STC approved or validated by an EASA Member State before the establishment of EASA is deemed to be approved under Regulation (EU) No 748/2012 Article 4. Last updated 23/02/2023 Was this helpful? Yes No
