[Docket No. FAA-2014-0561; Directorate Identifier 2014-NE-12-AD] 

RIN 2120-AA64 

Airworthiness Directives; Rolls-Royce plc Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). 

SUMMARY: We propose to supersede airworthiness directive (AD) 2015-04-03 that 

applies to certain Rolls-Royce pic (RR) RB211 Trent 768-60, 772-60, and 7728-60 

turbofan engines. AD 2015-04-03 requires inspection of the sealing sleeve on the highpressure/intermediate-pressure (HP/IP) turbine support internal oil feed tube and removal 

of those sealing sleeves affected by AD 2015-04-03. This proposed AD would require 

removal of either the affected sealing sleeve only or both the affected sealing sleeve and 

the oil feed tube. We are proposing this AD to prevent failure ofthe HP/IP turbine 

support internal oil feed tube, which could lead to uncontained engine failure and damage 

to the airplane. 

DATES: We must receive comments on this proposed AD by [INSERT DATE 60 

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. 

ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 

and 11.45, by any ofthe following methods: 
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 

20590. 

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

Monday through Friday, except Federal holidays. 

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

Corporate Communications, P.O. Box 31, Derby, DE24 8BJ, United Kingdom; phone: 

011-44-1332-242424; fax: 011-44-1332-249936; email: http://www.rollsroyce.com/contact/civil_team.jsp; Internet: https://customers.rollsroyce.com/public/rollsroycecare. You may view this service information at the FAA, 

Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For 

information on the availability ofthis material at the FAA, call 781-238-7125. 

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-2014-0561; or in person at the Docket 

Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal 

holidays. The AD docket contains this proposed AD, the mandatory continuing 

airworthiness information, 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. 

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SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written relevant data, views, or arguments about this 

proposed AD. Send your comments to an address listed under the ADDRESSES section. 

Include "Docket No. FAA-2014-0561; Directorate Identifier 2014-NE-12-AD" at the 

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

economic, environmental, and energy aspects of this proposed AD. We will consider all 

comments received by the closing date and may amend this proposed 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 we receive about this 

proposed AD. 

Discussion 

On February 11 ,2015, we issued AD 2015-04-03, Amendment 39-18105 (80 FR 

9380, February 23, 2015), for certain RR RB211 Trent 768-60, 772-60, and 772B-60 

turbofan engines. AD 2015-04-03 requires inspection ofthe sealing sleeve on the HP/IP 

turbine support internal oil feed tube and removal of those sealing sleeves affected by AD 

2015-04-03. AD 2015-04-03 resulted from fractures ofthe HP/IP turbine support internal 

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Since we issued AD 2015-04-03, Amendment 39-18105 (80 FR 9380, February 

23, 2015), we received a report of high oil consumption on an engine that did not have an 

affected sealing sleeve. The manufacturer's investigation revealed that certain oil feed 

tube threaded end adapters were manufactured with the outer diameter larger than the 

drawing maximum, which can cause binding of the sliding joint and ultimately lead to 

low-cycle fatigue failure of the HP/IP turbine support internal oil feed tube. Also since 

we issued AD 2015-04-03, the European Aviation Safety Agency has issued AD 2015-

0105R1, dated August 18, 2015, which requires inspection of the affected sealing sleeve 

and removal of the affected sealing sleeve or removal of both the affected sealing sleeve 

and oil feed tube. 

Related Service Information under 1 CFR Part 51 

RR has issued RR Alert Non-Modification Service Bulletin (NMSB) No. RB.21 1-

72-AJ035, Revision 2, dated August 10, 2015 and RR Service Bulletin (SB) No. RB.211-

72-H754, dated October 1, 2014. The Alert NMSB No. RB.211-72-AJ035, Revision 2, 

dated August 10, 2015, provides guidance on identification of the sealing sleeve, part 

number (PIN) FW15003, and replacement of the non-conforming sealing sleeve, PIN 

FW15003, with a conforming sealing sleeve, PIN FW15003. The SB No. RB.211-72-

H754, dated October 1, 2014, provides information on the replacement ofthe sealing 

sleeve, PIN FWJ 5003, and oil feed tube, PIN FW14193, with a sealing sleeve, PIN 

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We are proposing this AD because we evaluated all the relevant information and 

determined the unsafe condition described previously is likely to exist or develop in other 

products of the same type design. 

Proposed AD Requirements 

This proposed AD would require removal of the affected sealing sleeve only or 

both the affected sealing sleeve and the oil feed tube. Both corrective actions eliminate 

the unsafe condition caused by affected sealing sleeves and/or affected oil feed tube 

threaded end adapters. 

Costs of Compliance 

We estimate that this proposed AD affects 58 engines installed on airplanes of 

U.S. registry. We also estimate that it would take about 1.2 hours per engine to comply 

with this proposed AD. The average labor rate is $85 per hour. Required parts cost 

approximately $5,850 per engine. Based on these figures, we estimate the cost of this 

proposed AD on U.S. operators to be $345,216. 

Authority for this Rulemaking 

Title 49 of the United States Code specifies the FAA's authority to issue rules on 

aviation safety. Subtitle T, Section 106, describes the authority of the FAA Administrator. 

Subtitle VTT, Aviation Programs, describes in more detail the scope of the Agency's 

authority. 

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necessary for safety in air commerce. This regulation is within the scope of that authority 

because it addresses an unsafe condition that is likely to exist or develop on products 

identified in this rulemaking action. 

Regulatory Findings 

We have determined that this proposed AD would not have federalism 

implications under Executive Order 13132. This proposed AD would not have a 

substantial direct effect on the States, on the relationship between the national 

Government and the States, or on the distribution of power and responsibilities among the 

various levels of government. 

For the reasons discussed above, I certify that the proposed regulation: 

(1) Is not a "significant regulatory action" under Executive Order 12866, 

(2) Is not a "significant rule" under the DOT Regulatory Policies and Procedures 

( 44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation in Alaska to the extent that it justifies 

making a regulatory distinction, and 

(4) Will not have a significant economic impact, positive or negative, on a 

substantial number of small entities under the criteria of the Regulatory Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 

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1. The authority citation for part 39 continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The FAA amends§ 39.13 by removing airworthiness directive (AD) 2015-04-

03, Amendment 39-18105 (80 FR 9380, February 23, 2015) ("AD 2015-04-03"), and 

adding the following new AD: 

Rolls-Royce pic: Docket No. FAA-2014-0561; Directorate Identifier2014-NE-12-AD. 

(a) Comments Due Date 

We must receive comments by [INSERT DATE 60 DAYS AFTER DATE OF 

PUBLICATION TN THE FEDERAL REGISTER]. 

(b) Affected ADs 

This AD supersedes AD 2015-04-03. 

(c) Applicability 

This AD applies to Rolls-Royce pic (RR) RB211 Trent 768-60, 772-60, and 

772B-60 turbofan engines, all serial numbers, except those engines: 

(1) that have had Modification 72-H754 applied in production, or 

(2) that have been modified in accordance with RR Service Bulletin (SB) No. 

RB.211-72-H754, dated October I, 2014, or 

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(HP/IP) turbine support internal oil feed tube. We are issuing this AD to prevent failure 

of the HP/IP turbine support internal oil feed tube, which could result in uncontained 

engine failure and damage to the airplane. 

(e) Compliance 

Comply with this AD within the compliance times specified, unless already done. 

(1) If sealing sleeve, PIN FW15003, is installed without markings 102013, 

112013, or 102013L, or ifthe markings cannot be sufficiently identified, then within 

1,600 flight cycles or 24 months after the effective date of this AD, whichever occurs 

first: 

(i) Remove the affected sealing sleeve, PIN FW15003, and replace it with a 

sealing sleeve eligible for installation. Use paragraph 3.A.(4)(b) ofRR Alert NonModification Service Bulletin (NMSB) No. RB.211-72-AJ035, Revision 2, dated August 

10,2015, to perform the part replacement, or, 

(ii) Remove the affected sealing sleeve, PIN FW15003, and the oil feed tube, PIN 

FW14193, and replace with parts eligible for installation. Use paragraph 3.B. or 3.C., as 

appropriate, of RR SB No. RB.21 1 -72-H754, dated October 1, 2014, to perform the parts 

replacement. 

(2) Reserved. 

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(g) Related Information 

(I) For more information about this AD, contact Philip Haberl en, Aerospace 

Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 01803; phone: 781-238-7770; fax: 781 -238-

71 99; email: philip.haberlen@faa.gov. 

(2) Refer toMCAT European Aviation Safety Agency AD 2015-0105R 1, dated, 

August 18,2015, for more information. You may examine the MCAI in the AD docket 

on the Internet at http://www.regulations.gov/#!docketDetaii;D=FAA-2014-0561. 

(3) RR Alert NMSB No. RB.211-72-AJ035, Revision 2, dated August 10, 2015 

and RR SB No. RB.211-72-H754, dated October I , 2014, can be obtained from RR, 

using the contact information in paragraph (g)(4) of this AD. 

(4) For service information identified in this AD, contact Rolls-Royce plc, 

Corporate Communications, P.O. Box 31, Derby, DE24 8BJ, United Kingdom; phone: 

011-44-1332- 242424; fax: 011-44-1332-249936; email: http://www.rollsroyce.com/contactlcivil_team.jsp; Internet: https://customers.rollsroyce.com/public/rollsroycecare. 

(5) You may view this service information at the FAA, Engine & Propeller 

Directorate, 12 New England Executive Park, Burlington. MA. For information on the 

availability ofthis material at the FAA, call 781-238-7125. 

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Aircraft Certification Service. 

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