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DOT/FAA RIN: 2120-AL11 Publication ID: Spring 2023 
Title: Decompression Criteria for Interior Compartments 

This rulemaking would allow non-structural walls (partitions) to collapse if they are immediately adjacent to a sudden hole in the fuselage skin of a size that would cause a rapid decompression. Compliance to the rule as written would require substantial structural strength for these small compartments, and could create unintended, unsafe consequences for the airframe structure, such as the floor beams, if these partitions were strengthened. Certification to the revised standard would allow partitions to collapse in a controlled manner and in a way that continues to protect the occupants from contact and injury to the extent practical.

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 25   
Legal Authority: 49 U.S.C. 106(f)    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  05/15/2019  84 FR 21733   
NPRM Comment Period End  06/15/2019 
Final Rule  06/00/2023 
Additional Information: This action is deregulatory.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Undetermined 
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:
Todd Martin
Aircraft Certification Service
Department of Transportation
Federal Aviation Administration
2200 S 216th Street,
Des Moines, WA 98198
Phone:206 231-3210