30 Sep 2025 Certification Specification (CS) Official Publication Certification Specifications group CS-23 Normal, Utility, Aerobatic and Commuter Aeroplanes Regulation group Initial Airworthiness and Environmental Protection Read More Read More CS file [pdf] Amendment to Issue 4 of the AMC & GM to CS-23 Related ED Decision ED Decision 2025/019/R Explanatory Note [external] Explanatory Note: N/A - see ED Decision 2025/019/R
