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DOT/FAA RIN: 2120-AJ52 Publication ID: Spring 2011 
Title: Damage Tolerance and Fatigue Evaluation of Composite Rotorcraft Structures 
Abstract: This rulemaking would address advances in composite structures technology. The intended effects are increased safety requirements as well as harmonization with international standards. The FAA currently considers this rulemaking nonsignificant. 
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 27   
Legal Authority: 49 USC 106(g)    49 USC 40113    49 USC 44701 to 44702    49 USC 44704   
Legal Deadline:
Action Source Description Date
Final  Statutory  Final Rule  11/16/2011 
Timetable:
Action Date FR Cite
NPRM  01/06/2010  75 FR 793   
NPRM Comment Period End  04/06/2010    
NPRM Comment Period Reopened  05/05/2010  75 FR 24502   
Reopening of Comment Period End  07/16/2010    
Final Rule  09/00/2011    
Additional Information: An Aviation Rulemaking Advisory Committee (ARAC) working group (WG) recommended changes to rotorcraft composite structure safety standards to address advances in technology.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: www.regulations.gov   Public Comment URL: www.regulations.gov  
RIN Data Printed in the FR: No 
Agency Contact:
Sharon Miles
Regulations and Policy Group
Department of Transportation
Federal Aviation Administration
2601 Meacham Blvd.,
Fort Worth, TX 76137
Phone:817-222-5122
Email: sharon.y.miles@faa.gov