G/TBT/N/USA/1831  
7 February 2022  
(22-0879) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UNITED STATES OF AMERICA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:  Environmental Protection Agency (EPA) [1860]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated i f different from above:   
Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov  
3. Notified under Article 2.9.2 [X], 2.10.1 [   ], 5.6.2 [X], 5.7.1 [   ], other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Emissions; 
aircraft engine pollution; Quality (ICS 03.120), Environmental protection (ICS 13.020), 
Air quality (ICS 13.040), Test conditio ns and procedures in general (ICS 19.020), Aircraft 
and space vehicles in general (ICS 49.020), Aerospace engines and propulsion systems 
(ICS 49.050)  
5. Title, number of pages and language(s) of the notified document:  Control of Air 
Pollution From Aircraf t Engines: Emission Standards and Test Procedures (39 page(s), in 
English)  
6. Description of content:  Proposed rule - The Environmental Protection Agency (EPA) is 
proposing particulate matter (PM) emission standards and test procedures  applicable to 
certain classes of engines used by civil subsonic jet airplanes (those engines with rated 
output of greater than 26.7  kilonewtons (kN)) to replace the existing smoke standard 
for aircraft.   These proposed standards and test procedures are equivalent to the  engine 
standards adopted by the United Nations' International Civil  Aviation Organization 
(ICAO) in 2017 and 2020 and would apply to both  new type design aircraft engines and 
in-production aircraft engines.  The EPA, as well as the United States Federal Aviatio n 
Administration  (FAA), actively participated in the ICAO proceedings in which 
these  requirements were developed. These proposed standards would reflect 
the importance of the control of PM emissions and U.S. efforts to secure  the highest 
practicable degree  of uniformity in aviation regulations  and standards. Additionally, the 
EPA is proposing to migrate,  modernize, and streamline the existing regulations into a 
new part. As  part of this update, the EPA is also proposing to align with ICAO 
by applying the sm oke number standards to engines less than or equal to  26.7 
kilonewtons rated output used in supersonic airplanes.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of the environment; Quality requirements; Ha rmonization  G/TBT/N/USA/1831  
 
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  8. Relevant documents:   
87 Federal Register (FR) 6324, 3 February 2022; Title 40 Code of Federal Regulations 
(CFR) Parts 87, 1030, and 1031:  
https://www.govinfo.gov/content/pkg/FR -2022-02-03/html/2022 -01150.htm  
https://www.govinfo.gov/content/pkg/FR -2022-02-03/pdf/2022 -01150.pdf  
This proposed rule is identified by Docket Number  EPA-HQ-OAR-2019-0660. The Docket 
Folder is available on Regulations.gov at  https://www.regulations.gov/docket/EPA -HQ-
OAR-2019-0660/document  and provides access to primary and supporting documents as 
well as comments received. Documents are also accessible from  Regulations.gov  by 
searching the Docket Number. WTO Members and their stakeholders are asked to submit 
comments to the  USA TBT Enquiry Point  by or before 4pm Eastern Time  on 4 April 2022. 
Comments received by the USA TBT Enquiry Point from WTO Members and their 
stakeholders will be shared with the regulator and will also be submitted to the  Docket  on 
Regulations.gov if received within the comment period.  
G/TBT/N/USA/1640 and subsequent addenda and corrigendum - Control of Air Pollution 
from Airplanes and Airplane Engines: GHG Emission Standards and Test Procedures; 
identified by Dock et Number EPA -HQ-OAR-2018-0276.   The Docket Folder is available 
on Regulations.gov  at https://www.regulations.gov/ docket?D=EPA -HQ-OAR-2018-
0276 and provides access to primary and supporting documents as well as comments 
received. Documents are also accessible from  Regulations.gov  by searching the Docket 
Number.   
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  4 April 2022  
11. Texts available from:  National enquiry point [ ] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
https://members.wto.org/crnattachments/2022/TBT/USA/22_1372_00_e.pdf