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EPA/OAR RIN: 2060-AU69 Publication ID: Fall 2020 
Title: Advancing Clean Aircraft Engines and Reforming Particulate Matter Test Procedures Under CAA Section 231 

This rulemaking follows on the International Civil Aviation Organization (ICAO) agreement on the international particulate matter (PM) emission standards for commercial aircraft engines in February 2019. Domestically the EPA anticipates adopting PM standards that would be at least as stringent as ICAO's standards. The rulemaking includes retiring the existing smoke number standard for certain classes of aircraft engines and updating the measurement procedures for PM emissions.

Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: Not subject to, not significant 
CFR Citation: 40 CFR 87   
Legal Authority: 42 U.S.C. 7545 Clean Air Act   
Legal Deadline:  None
Action Date FR Cite
NPRM  08/00/2021 
Final Rule  05/00/2022 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Undetermined 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Bryan Manning
Environmental Protection Agency
Office of Air and Radiation
Ann Arbor, MI 48105
Phone:734 214-4832
Fax:734 214-4816

John Mueller
Environmental Protection Agency
Office of Air and Radiation
2565 Plymouth Road, Fuel Emissions Laboratory/OAR,
Ann Arbor, MI 48105
Phone:734 214-4275