OpenLegislation

Division 3 The following data items shall be made available to the transponder and be transmitted by the transponder via the Mode S protocol and in accordance with the formats specified in ICAO document 9871 (2nd edition):

United Kingdom

Original text. Later amendments are not shown.

  1. (a)

    24-bit ICAO aircraft address;

  2. (b)

    Mode A code;

  3. (c)

    pressure altitude;

  4. (d)

    flight status (on the ground or airborne);

  5. (e)

    data link capability report;

    • airborne collision avoidance system (ACAS) capability,

    • Mode S specific services capability,

    • aircraft identification capability,

    • squitter capability,

    • surveillance identifier capability,

    • common usage Ground Initiated Comms.-B (GICB) capability report (indication of change),

    • Mode S subnetwork version number;

  6. (f)

    common usage GICB capability report;

  7. (g)

    aircraft identification;

  8. (h)

    special position indication (SPI);

  9. (i)

    emergency status (general emergency, no communications, unlawful interference) including the use of specific Mode A codes to indicate different emergency states;

  10. (j)

    ACAS active resolution advisories when the aircraft is equipped with Traffic alert and collision avoidance system II (TCAS II).

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).