01 Jul 2020 Certification Specification (CS) Official Publication Certification Specifications group CS-27 Small Rotorcraft Regulation group Initial Airworthiness Read MoreGet notified via email alerts Read More CS file [pdf] CS-27 Amendment 7 Related ED Decision ED Decision 2020/006/R Explanatory Note [pdf] Explanatory Note to Decision 2020/006/R Change Information [pdf] Change Information — CS-27 Amendment 7 Get notified via email alerts Stay informed when this page is updated, or when we publish new content like this. You can always unsubscribe or update these settings later on. Create an account with your email or login Email address ? Create an account with your social account or login Facebook Google Linkedin