AD 2017-19-16

AD Final Rules - 2017-19-16.pdf
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AD Number:
2017-19-16
Document Type:
AD Final Rules
Docket Number:
FAA-2017-0753
Subject Heading:
Airworthiness Directives; Rolls-Royce plc Turbofan Engines
Subject:
Turbine Engine Compressor Section
Status:
Current
Citation:
Federal Register Volume 82, Number 187 (Thursday, September 28, 2017)
Citation Publish Date:
09/28/2017
Effective Date:
10/13/2017
Make:
Rolls-Royce plc
Model:
RB211 Trent 553-61 | RB211 Trent 553A2-61 | RB211 Trent 556-61 | RB211 Trent 556A2-61 | RB211 Trent 556B-61 | RB211 Trent 556B2-61 | RB211 Trent 560-6... ...Show more
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
10/2/2017: The AD number in the "Docket, Amendment, & AD No" section in RGL has been corrected to remove the extra "2017-" at the beginning of the num... ...Show more
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[Federal Register Volume 82, Number 187 (Thursday, September 28, 2017)]


[Rules and Regulations]


[Pages 45175-45177]


From the Federal Register Online via the Government Publishing Office [www.gpo.gov]


[FR Doc No: 2017-20702]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2017-0753; Product Identifier 2017-NE-25-AD; Amendment 39-19046; AD


2017-2017-19-16]


RIN 2120-AA64


Airworthiness Directives; Rolls-Royce plc Turbofan Engines


AGENCY:
 
Federal Aviation Administration (FAA), DOT.


ACTION:
 
Final rule; request for comments.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
We are adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR)


RB211 Trent 553-61, Trent 553A2-61, Trent 556-61, Trent 556A2-61, Trent 556B-61, Trent 556B2-


61, Trent 560-61, and Trent 560A2-61 turbofan engines. This AD requires replacement of the low-


pressure compressor (LPC) case A-frame hollow locating pins. This AD was prompted by LPC case


A-frame hollow locating pins that may have reduced integrity due to incorrect heat treatment. We are


issuing this AD to correct the unsafe condition on these products.


DATES:
 
This AD becomes effective October 13, 2017.


The Director of the Federal Register approved the incorporation by reference of a certain


publications listed in this AD as of October 13, 2017.


We must receive comments on this AD by November 13, 2017.


ADDRESSES:
 
You may send comments by any of the following methods:


•
 
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for


submitting comments.


•
 
Mail: U.S. Department of Transportation, 1200 New Jersey Avenue SE., West Building


Ground Floor, Room W12-140, Washington, DC 20590-0001.


•
 
Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through


Friday, except Federal holidays.


•
 
Fax: 202-493-2251.


For service information identified in this AD, contact Rolls-Royce plc, Corporate


Communications, P.O. Box 31, Derby, England, DE24 8BJ; phone: 011-44-1332-242424; fax: 011-


44-1332-249936; email: http://www.rolls-royce.com/contact/civil_team.jsp; Internet:


https://customers.rolls-royce.com/public/rollsroycecare. You may view this service information at the
2


FAA, Engine and Propeller Standards Branch, Policy and Innovation Division, 1200 District Avenue,


Burlington, MA 01803. For information on the availability of this material at the FAA, call 781-238-


7125. It is also available on the Internet at http://www.regulations.gov by searching for and locating


Docket No. FAA-2017-0753.


Examining the AD Docket


You may examine the AD docket on the Internet at http://www.regulations.gov by searching for


and locating Docket No. FAA-2017-0753; or in person at the Docket Operations office between 9


a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD,


the mandatory continuing airworthiness information (MCAI), regulatory evaluation, any comments


received, and other information. The address for the Docket Office (phone: 800-647-5527) is in the


ADDRESSES section. Comments will be available in the AD docket shortly after receipt.


FOR FURTHER INFORMATION CONTACT:
 
Robert Green, Aerospace Engineer, FAA, ECO


Branch, Compliance and Airworthiness Division, 1200 District Avenue, Burlington, MA 01803;


phone: 781-238-7754; fax: 781-238-7199; email: robert.green@faa.gov.


SUPPLEMENTARY INFORMATION:


Comments Invited


This AD is a final rule that involves requirements affecting flight safety, and we did not precede


it by notice and opportunity for public comment. We invite you to send any written relevant data,


views, or arguments about this AD. Send your comments to an address listed under the ADDRESSES


section. Include “Docket No. FAA-2017-0753; Product Identifier 2017-NE-25-AD” at the beginning


of your comments. We specifically invite comments on the overall regulatory, economic,


environmental, and energy aspects of this AD. We will consider all comments received by the closing


date and may amend this AD because of those comments.


We will post all comments we receive, without change, to http://www.regulations.gov, including


any personal information you provide. We will also post a report summarizing each substantive


verbal contact with FAA personnel concerning this AD.


Discussion


The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member


States of the European Community, has issued EASA AD 2017-0012, dated January 25, 2017


(referred to hereinafter as “the MCAI”), to correct an unsafe condition for the specified products. The


MCAI states:


All low pressure compressor (LPC) case A-frame hollow locating pins, Part Number


(P/N) FK32009, manufactured since 2012 have potentially been subjected to incorrect


heat treatment. This may have reduced the integrity of the pin such that in a Fan Blade


Off (FBO) event it is unable to withstand the applied loads. This condition, if not


corrected, could lead to loss of location of the A-frame following an FBO event,


possibly resulting in engine separation, loss of thrust reverser unit, release of high-


energy debris, or an uncontrolled fire. To address this potential unsafe condition, RR


identified the affected engines that have these A-frame hollow locating pins installed


and published Alert NMSB RB.211-72-AJ451, providing instructions for replacement


of these pins. For the reason described above, this AD requires a one-time replacement


of the A-frame hollow locating pins P/N FK32009 on the affected engines.