Division 4 United Kingdom Original text. Later amendments are not shown. Other data items may be made available to the transponder. Notes on Part A: Secondary surveillance radar transponder capabi Textual amendments F1 Substituted by Commission Implementing Regulation (EU) 2017/386 of 6 March 2017 amending Implementing Regulation (EU) No 1207/2011 laying down requirements for the performance and the interoperability of surveillance for the single European sky (Text with EEA relevance). ← Division 3 Division 4 Division 5 →