{
  "url": "https://openlegislation.uk/eu-regulation-2011-1207/annex-II/part-3/division-2",
  "json_url": "https://openlegislation.uk/eu-regulation-2011-1207/annex-II/part-3/division-2.json",
  "legislation": "eur/2011/1207",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2011-1207",
  "path": "annex/II/part/3/division/2",
  "kind": "division",
  "number": "2",
  "heading": "The following data items, where available on a digital bus, shall be transmitted by the transponder as requested by the ground-based surveillance chain, via the Mode S protocol and in accordance with the formats specified in ICAO document 9871 (2 nd edition):",
  "text": "(a) MCP/FCU selected altitude;\n(b) roll angle;\n(c) true track angle;\n(d) ground speed;\n(e) magnetic heading;\n(f) indicated airspeed (IAS) or mach number;\n(g) vertical rate (barometric or baro-inertial);\n(h) barometric pressure setting (minus 800 hectoPascals);\n(i) track angle rate or true airspeed if track angle rate is not available.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Implementing Regulation (EU) 2020/587 of 29 April 2020 amending Implementing Regulation (EU) No 1206/2011 laying down requirements on aircraft identification for surveillance for the single European sky and 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)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2011/1207/annex/II/part/3/division/2",
    "retrieved_at": "2026-11-01T14:49:44.507166+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}