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SECTION 13 SSR Transponder and ADS-B transmitters

ANNEX: Rules of the Air · Standardised European Rules of the Air (SERA) · Regulation (EU) No 923/2012 · SERA.13001 – SERA.13020

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  1. SERA.13001 Operation of an SSR transponder

    When an aircraft carries a serviceable SSR transponder, the pilot shall operate the transponder at all times during flight, regardless of whether the…

    GM1 SERA.13001 Operation of an SSR transponder

    GM1 SERA.13001(c) Operation of an SSR transponder

    GM2 SERA.13001(c) Operation of an SSR transponder

  2. SERA.13005 SSR transponder Mode A code setting

    To indicate that it is in a specific contingency situation, the pilot of an aircraft equipped with SSR shall:

    GM1 SERA.13005(a) SSR transponder Mode A code setting

    AMC1 SERA.13005(c) SSR transponder Mode A code setting

  3. SERA.13010 Pressure-altitude-derived information

    When the aircraft carries serviceable Mode C equipment, the pilot shall continuously operate this mode unless otherwise dictated by ATC.

    GM1 SERA.13010(b) Pressure-altitude-derived information

    GM2 SERA.13010(b) Pressure-altitude-derived information

  4. SERA.13015 On-board aircraft identification setting

    Aircraft equipped with a Mode S or ADS-B transmitter that has an aircraft identification feature shall transmit the aircraft identification as specified…

    AMC1 SERA.13015 On-board aircraft identification setting

    GM1 SERA.13015 On-board aircraft identification setting

    GM2 SERA.13015 On-board aircraft identification setting

    GM3 SERA.13015 On-board aircraft identification setting

    GM4 SERA.13015 On-board aircraft identification setting

    GM5 SERA.13015 On-board aircraft identification setting

  5. SERA.13020 SSR transponder failure when the carriage of a functioning transponder is mandatory

    In case of a transponder failure after departure, ATC units shall attempt to provide for continuation of the flight to the destination aerodrome in…

    GM1 SERA.13020(a) SSR transponder failure when the carriage of a functioning transponder is mandatory

    GM1 SERA.13020(b) SSR transponder failure when the carriage of a functioning transponder is mandatory

Consolidated from the EASA Easy Access Rules (revision 26 Aug 2025, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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