31 May 2021 Certification Specification (CS) Official Publication Certification Specifications group CS-ACNS Airborne Communications, Navigation and Surveillance Regulation group Airspace Usage Requirements (AUR) Read More Read More CS file [pdf] CS-ACNS Issue 3 The file was replaced on 22/10/2021. The corrections are highlighted. Related ED Decision ED Decision 2021/008/R Explanatory Note [pdf] Explanatory Note to ED Decision 2021/008/R Change Information [pdf] Change Information — CS-ACNS Issue 3
