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DOT/FAA RIN: 2120-AJ99 Publication ID: Fall 2023 
Title: System Safety Assessment 

This rulemaking would standardize regulations and guidance for conducting airplane-level safety assessments of various critical systems installed on transport category airplanes. Current differences happened over time as system safety rules and policies were developed independently. This rulemaking would adopt Aviation Rulemaking Advisory Committee recommendations and harmonize with the European Aviation Safety Agency CS-25.

Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 14 CFR 1    14 CFR 125    14 CFR 135    14 CFR 137    14 CFR 145    14 CFR 91   
Legal Authority: 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   
Legal Deadline:  None
Action Date FR Cite
NPRM  12/08/2022  87 FR 75424   
NPRM Comment Period Extended  03/02/2023  88 FR 13071   
NPRM Comment Period End  03/08/2023 
Second NPRM Comment Period End  04/24/2023 
Analyzing Comments  06/20/2023 
Final Action  05/00/2024 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Sekhar Vaidyanath
Department of Transportation
Federal Aviation Administration
2200 S 216th Street,
Des Moines, WA 98198