07 Feb 2023 Certification Specification (CS) Official Publication Amendment 10 Certification Specifications group CS-27 Small Rotorcraft Regulation group Initial Airworthiness and Environmental Protection Read MoreGet notified via email alerts Read More CS file [pdf] CS-27 Amendment 10 The file was replaced on 04/10/2023. The corrections on pages: 41, 48, 72, 81, 159, 182, 189, 246, 260, 279, 291 and 303 are highlighted in yellow. Related ED Decision ED Decision 2023/001/R Explanatory Note [pdf] Explanatory Note to ED Decision 2023/001/R Change Information [pdf] Change Information – CS-27 Amendment 10