# Commission Implementing Regulation (EU) No 1207/2011 of 22 November 2011 laying down requirements for the performance and the interoperability of surveillance for the single European sky (Text with EEA relevance), Division 4

Extent: E+W+S+N.I.

The data items referred to in point 3 shall only be transmitted by the transponder via the Mode S protocol. The aircraft and equipment certification process shall cover the transmission of these data items.

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Source: https://www.legislation.gov.uk/eur/2011/1207/annex/II/part/3/division/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-1207/annex-II/part-3/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.