--- title: "SERA.11001 – SERA.11015: SECTION 11 Interference, emergency contingencies and interception (ANNEX: Rules of the Air, SERA) — rule index · Avioverse" description: "SERA.11001 – SERA.11015, Regulation (EU) No 923/2012. [Deleted.] (b) [Deleted.] (c) In case of an aircraft known or believed to be in a state of…" url: "https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11" --- # SECTION 11 Interference, emergency contingencies and interception ANNEX: Rules of the Air · Standardised European Rules of the Air (SERA) · Regulation (EU) No 923/2012 · SERA.11001 – SERA.11015 On this page 1. ## [SERA.11001 General](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11001) \[Deleted.] (b) \[Deleted.] (c) In case of an aircraft known or believed to be in a state of emergency, including being subjected to unlawful interference… [GM1 SERA.11001 General](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11001#gm1-sera-11001) 2. ## [SERA.11005 Unlawful interference](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11005) \[Deleted.] (aa) An aircraft which is being subjected to unlawful interference shall endeavour to set the transponder to Code 7500 and notify the… [AMC1 SERA.11005 Unlawful interference](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11005#amc1-sera-11005) [GM1 SERA.11005 Unlawful interference](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11005#gm1-sera-11005) 3. ## [GM1 to AMC1 SERA.11005(a)(1) Unlawful interference](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/gm1-to-amc1-sera-11005-a-1-unlawful-interference) Verbal reference to unlawful interference should not be made by the controller unless it is first made by the pilot in a radio communication… 4. ## [SERA.11010 Strayed or unidentified aircraft](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11010) As soon as an air traffic services unit becomes aware of a strayed aircraft it shall take all necessary steps as outlined in (1) and (3) to assist the… [GM1 SERA.11010 Strayed or unidentified aircraft](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11010#gm1-sera-11010) 5. ## [SERA.11012 Minimum Fuel/Energy and Fuel/Energy Emergency](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11012) When a pilot reports a state of minimum fuel/energy, the controller shall inform the pilot as soon as practicable of any anticipated delays or that no… [GM1 SERA.11012 Minimum fuel/energy and fuel/energy emergency](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11012#gm1-sera-11012) 6. ## [SERA.11013 Degraded aircraft performance](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11013) Whenever, as a result of failure or degradation of navigation, communications, altimetry, flight control or other systems, aircraft performance is… [GM1 SERA.11013(b) Degraded aircraft performance](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11013#gm1-sera-11013-b) [GM1 SERA.11013(c) Degraded aircraft performance](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11013#gm1-sera-11013-c) 7. ## [SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014) ACAS II shall be used during flight, except as provided in the minimum equipment list specified in Commission Regulation (EU) No 965/2012 in a mode that… [GM1 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm1-sera-11014) [GM2 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm2-sera-11014) [GM3 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm3-sera-11014) [GM4 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm4-sera-11014) [GM5 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm5-sera-11014) [GM6 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm6-sera-11014) [GM7 SERA.11014 ACAS resolution advisory (RA)](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11014#gm7-sera-11014) 8. ## [SERA.11015 Interception](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11015) Except for intercept and escort service provided on request to an aircraft, interception of civil aircraft shall be governed by appropriate regulations… [GM1 SERA.11015 Interception](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11015#gm1-sera-11015) [AMC1 SERA.11015(a) Interception](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11015#amc1-sera-11015-a) [GM1 SERA.11015(a) Interception](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-11/sera-11015#gm1-sera-11015-a) Consolidated from the EASA Easy Access Rules (revision 26 Aug 2025, extracted 13 Oct 2026) for convenience. 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