{
  "url": "https://openlegislation.uk/eu-regulation-2012-923/annex/section-13/division-SERA.13001",
  "json_url": "https://openlegislation.uk/eu-regulation-2012-923/annex/section-13/division-SERA.13001.json",
  "legislation": "eur/2012/923",
  "legislation_title": "Commission Implementing Regulation (EU) No 923/2012 of 26 September 2012 laying down the common rules of the air and operational provisions regarding services and procedures in air navigation and amending Implementing Regulation (EU) No 1035/2011 and Regulations (EC) No 1265/2007, (EC) No 1794/2006, (EC) No 730/2006, (EC) No 1033/2006 and (EU) No 255/2010 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2012-923",
  "path": "annex/section/13/division/SERA.13001",
  "kind": "division",
  "number": "SERA.13001",
  "heading": "Operation of an SSR transponder",
  "text": "(a) When an aircraft carries a serviceable SSR transponder, the pilot shall operate the transponder at all times during flight, regardless of whether the aircraft is within or outside airspace where SSR is used for ATS purposes.\n(b) Pilots shall not operate the IDENT feature unless requested by ATS.\n(c) Except for flight in airspace designated by the competent authority for mandatory operation of transponder, aircraft without sufficient electrical power supply are exempted from the requirement to operate the transponder at all times.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted by Commission Implementing Regulation (EU) 2016/1185 of 20 July 2016 amending Implementing Regulation (EU) No 923/2012 as regards the update and completion of the common rules of the air and operational provisions regarding services and procedures in air navigation (SERA Part C) and repealing Regulation (EC) No 730/2006 (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2012/923/annex/section/13/division/SERA.13001",
    "retrieved_at": "2026-11-01T14:49:10.260453+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."
}