GM1 21.B.85(a) Applicable environmental protection requirements for a type certificate or restricted type certificate

• ED Decision 2021/011/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)
• ED Decision 2025/016/R found in: Initial Airworthiness and Environmental Protection (748/2012) (Nov 2025)

GM1 21.B.85(a) Applicable environmental protection requirements ED Decision 2021/011/R 1.       APPLICABLE ENVIRONMENTAL PROTECTION REQUIREMENTS The applicable environmental protection requirements are the Standards and Recommended Practices in Volume I, Volume II and Volume III of Annex 16 to the Chicago Convention for aircraft and engines for which the first subparagraph of Article 9(2) of [Regulation (EU) 2018/1139](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32018R1139&qid=1631541333880) applies. The applicable levels of amendment to Annex 16 to the Chicago Convention are those adopted in the first subparagraph of Article 9(2) of [Regulation (EU) 2018/1139](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32018R1139&qid=1631541333880). 2.       AIRCRAFT NOISE Guidance material for the application of the certification procedures for aircraft noise is presented in: (a)      Volume I of Annex 16 to the Chicago Convention: (1)     in Attachment A for equations for the calculation of maximum permitted noise levels as a function of take-off mass; (2)     in Attachment D for evaluating an alternative method of measuring helicopter noise during approach; (3)     in Attachment E for applicability of noise certification standards for propeller‑driven aeroplanes; and (4)     in Attachment F for guidelines for noise certification of tilt rotors; and (b)     ICAO Doc 9501 ‘Environmental Technical Manual’, Volume I ‘Procedures for the Noise Certification of Aircraft’, except Chapter 8. 3.       FUEL VENTING Guidance material for the application of the certification procedures for aircraft engine emissions is presented in ICAO Doc 9501 ‘Environmental Technical Manual’ Volume II ‘Procedures for the Emissions Certification of Aircraft Engines’. 4.       ENGINE EMISSIONS 4.1.    Guidance material related to engine emissions requirements Guidance material for the application of the certification procedures for aircraft engine emissions is presented in: (a)     Attachment E to Appendix 3 to Volume II of Annex 16 to the Chicago Convention for the calculation of the emissions parameters; and (b)     ICAO Doc 9501 ‘Environmental Technical Manual’ Volume II ‘Procedures for the Emissions Certification of Aircraft Engines’. 4.2.    Engine emissions requirements for inventory and modelling purposes Aircraft engine manufacturers are required to calculate the nvPM mass and nvPM number system loss correction factors as per Appendix 8 to Volume II of Annex 16 to the Chicago Convention and to report them to the competent authority. The nvPM mass and number system loss correction factors permit an estimation of the nvPM mass and number emissions at the exhaust of the aircraft engine from the nvPM mass and number concentration obtained in accordance with the procedures laid down in Appendix 7 to Volume II of Annex 16 to the Chicago Convention. 5.       AEROPLANE CO2 EMISSIONS Guidance material for the application of the certification procedures for aeroplane CO2 emissions is contained in ICAO Doc 9501 ‘Environmental Technical Manual’, Volume III ‘Procedures for the CO2 Emissions Certification of Aeroplanes’. ##### GM1 21.B.85(a) Applicable environmental protection requirements for a type certificate or restricted type certificate *ED Decision 2025/016/R* **CONTENT OF ICAO ANNEX 16 (VOLUMES I, II AND III)** **1. VOLUME I OF ICAO ANNEX 16 — AIRCRAFT NOISE** 1.1. SARPs Volume I of ICAO Annex 16 contains the SARPs for the noise certification of subsonic jet aeroplanes, propeller-driven aeroplanes, supersonic aeroplanes, helicopters and tilt‑rotors. 1.1.1. Part I Part I of that volume provides the definitions and nomenclature, which are an essential part of the SARPs. 1.1.2. Part II Chapter 1 of Part II of that volume on administration includes the overall applicability of that part. Each other chapter of that part applies to a specific aircraft type for a given date of application for a type certificate or for the certification of their derived versions. These chapters contain the noise level limits that shall not be exceeded, and some reference criteria. 1.1.3. Appendices The methods for the evaluation of noise levels are provided in the appendices to that volume. 1.2. Guidance material Guidance material for the application of the SARPs is provided in the attachments to that volume and in Doc 9501 ‘Environmental Technical Manual’, Volume I ‘Procedures for the Noise Certification of Aircraft’. **2. VOLUME II OF ICAO ANNEX 16 — AIRCRAFT ENGINE EMISSIONS** 2.1. SARPs Volume II of ICAO Annex 16 contains the SARPs for the aircraft fuel venting certification and the aircraft engine emissions certification. 2.1.1. Part I Part I of that volume provides the definitions and symbols, which are an essential part of the SARPs. 2.1.2. Part II Part II of that volume for the aircraft fuel venting certification applies to turbine engine powered aircraft manufactured after 18 February 1982. 2.1.3. Part III Part III of that volume applies to the aircraft engine emissions certification for turbojet and turbofan engines intended for the propulsion at subsonic and supersonic speeds and involves the following emissions: smoke gaseous emissions such as unburned hydrocarbons, carbon monoxide and oxides of nitrogen, and non-volatile particulate matter. Chapter 1 of that part on administration includes the overall applicability of that part. The other chapters of that part specify the applicability to the aircraft engine types and contain the emissions regulatory levels that shall not be exceeded and some reference criteria. The information below summarises the applicability categories. The detailed criteria provided in Part III are essential to determine the related applicable emissions regulatory levels. — Standards for new type and model designs These standards apply to aircraft engines of a type or model for which an application for a type certificate was submitted on or after a given date. — Standards for first individual production models These standards apply to aircraft engines of a type or model for which the date of manufacture of the first individual production model was on or after a given date. The emissions regulatory levels that shall not be exceeded for these aircraft engines are different from those for new type design aircraft engines. These standards are minimum requirements for continued production of an aircraft engine (production cut-off standards). 2.1.4. Part IV Part IV of that volume applies to aircraft engines that are certified for non-volatile particulate matter and for which the non-volatile particulate matter losses in the sampling and measurement system shall be assessed in accordance with Appendix 8. The correction factors resulting from this assessment shall be reported to the competent authority for inventory and modelling purposes. 2.1.5. Appendices The procedures for the evaluation of the emissions levels are provided in the appendices to that volume. 2.2. Guidance material Guidance material for the application of the SARPs is provided in the attachments to that volume and in Doc 9501 ‘Environmental Technical Manual’, Volume II ‘Procedures for the Emissions Certification of Aircraft Engines’. **3. VOLUME III OF ICAO ANNEX 16 — AEROPLANE CO****2** **EMISSIONS** 3.1. SARPs Volume III of ICAO Annex 16 contains the SARPs for the CO2 emissions certification of subsonic jet aeroplanes and propeller-driven aeroplanes. 3.1.1. Part I Part I of that volume provides the definitions and symbols, which are an essential part of the SARPs. 3.1.2. Part II Chapter 1 of Part II of that volume on administration includes the overall applicability of that part. Chapter 2 of that part defines the applicability to specific aeroplane types and their related maximum permitted CO2 emissions evaluation metric value. It also contains some reference criteria. The information below summarises the applicability categories. The detailed criteria provided in Chapter 2 are essential to determine the related applicable maximum permitted CO2 emissions evaluation metric values. The applicability provisions in Chapter 2 shall be applied in conjunction with the definitions of a ‘derived version of a non-CO2‑certified aeroplane’ and a ‘derived version of a CO2‑certified aeroplane’, as contained in Part I, Chapter 1. These definitions include additional criteria for the determination of the applicable CO2 standard for such aeroplanes. — Standards for new type designs and their derived versions These standards apply to aeroplanes and their derived versions for which the application for a type certificate was submitted on or after a given date (1 January 2020 and 1 January 2023 in Sections 2.1.1(a) to (c)). — Standards for individual non-CO2 certified aeroplanes These standards apply to aeroplanes for which a type certificate was issued but that were not certified for CO2 emissions in accordance with Volume III of ICAO Annex 16, and for which the individual certificate of airworthiness (CofA) was first issued on or after a given date (1 January 2028 in Sections 2.1.1.(f) and (g)). These standards are production cut-off standards. — Standards for derived versions of non-CO2‑certified aeroplanes These standards apply to individual aeroplanes for which a type certificate was issued but that were not certified for CO2 emissions in accordance with Volume III of ICAO Annex 16, and for which: — the application for approval of a change to the type certificate was submitted on or after a given date (1 January 2023 in Sections 2.1.1(d) and (e)); and — the change in the type design is made (i.e. applied to the individual aeroplane) prior to the issuance of the first CofA. 3.1.3. Appendices The methods for the evaluation of CO2 emissions levels are provided in the appendices to that volume. 3.2. Guidance material Guidance material for the application of the SARPs is provided in the attachments to that volume and in ICAO Doc 9501 ‘Environmental Technical Manual’, Volume III ‘Procedures for the CO2 Emissions Certification of Aeroplanes’.