# 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 3: The following data items shall be made available to the transponder and be transmitted by the transponder via Version 2 of the extended squitter (ES) ADS-B protocol in accordance with the formats specified in ICAO document 9871 (2nd edition):

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

(a) 24-bit ICAO aircraft address;
(b) aircraft identification;
(c) Mode A code;
(d) special position indication (SPI) using the same source as for the same parameter specified in Part A;
(e) emergency status (general emergency, no communications, unlawful interference) using the same source as for the same parameter specified in Part A;
(f) ADS-B version number (equal to 2);
(g) ADS-B emitter category;
(h) geodetic horizontal position in accordance with the world geodetic system revision 1984 (WGS84) latitude and longitude, both while airborne or on the ground;
(i) geodetic horizontal position quality indicators (corresponding to the integrity containment bound (NIC), 95 % navigation accuracy category for position (NACp), source integrity level (SIL) and system design assurance level (SDA));
(j) pressure altitude using the same source as for the same parameter specified in Part A;
(k) geometric altitude in accordance with the world geodetic system revision 1984 (WGS84), provided in addition and encoded as a difference to pressure altitude;
(l) geometric vertical accuracy (GVA);
(m) velocity over ground, both while airborne (east/west and north/south airborne velocity over ground) or on the ground (surface heading/ground track and movement);
(n) velocity quality indicator corresponding to navigation accuracy category for velocity (NACv);
(o) coded aircraft length and width;
(p) global navigation satellite system (GNSS) antenna offset;
(q) vertical rate: barometric vertical rate using the same source as for the same parameter specified in the data item in point 2 (g) of Part C when the aircraft is required and capable to transmit this data item via the Mode S protocol, or Global Navigation Satellite System (GNSS) vertical rate;
(r) mode control panel/flight control unit (MCP/FCU) selected altitude using the same source as for the same parameter specified in Part C when the aircraft is required and capable to transmit this data item via the Mode S protocol;
(s) barometric pressure setting (minus 800 hectoPascals) using the same source as for the same parameter specified in Part C when the aircraft is required and capable to transmit this data item via the Mode S protocol;
(t) ACAS active resolution advisories when the aircraft is equipped with TCAS II using the same source as for the same parameter specified in Part A.

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Source: https://www.legislation.gov.uk/eur/2011/1207/annex/II/part/2/division/3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-1207/annex-II/part-2/division-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.