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DOT/FAA RIN: 2120-AL29 Publication ID: Fall 2021 
Title: +Domestic Noise Certification of Supersonic Aircraft 

This action would add new supersonic airplanes to the applicability of noise certification regulations and add landing and takeoff noise standards for a certain class of new supersonic airplanes. There is renewed interest in the development of supersonic aircraft, and the regulations would facilitate the continued development of airplanes by specifying the noise limits for the designs, providing the means to certificate the airplanes for subsonic operation in the United States.

Agency: Department of Transportation(DOT)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 14 CFR 36   
Legal Authority: 42 U.S.C. 4321    49 U.S.C. 106(g)    49 U.S.C. 40113    49 U.S.C. 44701    49 U.S.C. 44702    49 U.S.C. 44704    49 U.S.C. 44715    Pub. L. 96-193, 94 Stat. 50, 57   
Legal Deadline:
Action Source Description Date
NPRM  Statutory  not later than March 31, 2020, the Administrator shall issue an NPRM to revise part 36 of title 14, Code of Federal Regulations, to include supersonic aircraft in the applicability of such part. See l  03/31/2020 
Action Date FR Cite
NPRM  04/13/2020  85 FR 20431   
NPRM Comment Period End  07/13/2020 
Analyzing Comments  04/00/2022 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Sandy Liu
Office of Environment and Energy
Department of Transportation
Federal Aviation Administration
800 Independence Avenue SW,
Washington, DC 20591
Phone:202 267-4748