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DOT/FAA RIN: 2120-AL30 Publication ID: Fall 2019 
Title: Special Flight Authorizations for Supersonic Aircraft 

Technological advances and renewed industry interest in developing new supersonic aircraft have prompted the need to consider policy and regulatory changes to enable certification and operation of these aircraft domestically. 14 CFR part 91 prohibits overland supersonic flight, but allows flights for test and development of new aircraft under the terms of appendix B. The procedures of appendix B and its related guidance are outdated, having been adopted in the late 1970s, and both the FAA and industry have difficulty determining what is expected from an applicant seeking a flight authorization. Modernization of appendix B to reflect current industry and regulatory needs will result in a streamlined process that will facilitate both overland testing and an understanding of the impacts of these flights. The FAA anticipates that as flight testing increases, more data can be gathered from the tests that will inform the efforts to promulgate a complete set of noise regulations for the certification of supersonic aircraft.

Agency: Department of Transportation(DOT)  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: Deregulatory 
CFR Citation: 14 CFR 91   
Legal Authority: 49 U.S.C. 106(f)    49 U.S.C. 106(g)    49 U.S.C. 1155    49 U.S.C. 40101    49 U.S.C. 40103    49 U.S.C. 40105    49 U.S.C. 40113    49 U.S.C. 40120    49 U.S.C. 44101    49 U.S.C. 44111    49 U.S.C. 44701    49 U.S.C. 44704    49 U.S.C. 44709    49 U.S.C. 44711    49 U.S.C. 44711    49 U.S.C. 44712    49 U.S.C. 44715    49 U.S.C. 44716    49 U.S.C. 44717    49 U.S.C. 44722    49 U.S.C. 46306    49 U.S.C. 46315    49 U.S.C. 46316    49 U.S.C. 46504    49 U.S.C. 46504    49 U.S.C. 46506    49 U.S.C. 46507    49 U.S.C. 46507    49 U.S.C. 47122    49 U.S.C. 47508    49 U.S.C. 47528 to 47531    49 U.S.C. 47534    Pub. L. 114-190, 130 Stat. 615   
Legal Deadline:  None
Action Date FR Cite
NPRM  06/28/2019  84 FR 30961   
NPRM Comment Period End  08/27/2019 
Analyzing Comments  10/01/2019 
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:
Mehmet Marsan
Office of Environment and Energy
Department of Transportation
Federal Aviation Administration
800 Independence Avenue SW,
Washington, DC 20591
Phone:202 267-7703