DEPARTMENT OF TRANSPORT ATlON 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2014-0363; Directorate .Identifier 2014-NE-08-AD] 

RIN 2120-AA64 

Ainvorthiness Directives; Rolls-Royce pic Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking (NPRM). 

[4910-13-PJ 

SUMMARY: We propose to adopt a new airworthiness directive (.t\D) for all RollsRoyce pic (RR) RB2l l Trent 768-60, 772-60, and 772B-60 turbofan engines. This 

proposed AD was prompted by fuel leaks caused by damage to the fan case low-pressure 

(LP) fuel tube. This proposed AD would require inspection of the fan case LP fuel tubes 

and associated clips and the fuel oil heat exchanger (FOHE) mounts and associated 

hardware. We are proposing this AD to prevent failure of the fan case LP fuel tube, 

which could lead to an in-flight shutdown of one or more engines due to fuel starvation, 

loss of thrust control, and damage to the airplane. 

DATES: We must receive conunents on this proposed AD by [fNSERT DATE 60 

DAYS AFTER DATE OF PUBLICATION TN THE FEDERAL REGISTER]. 

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

• Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the 

instructions for sending your comments electronically. 

• Mail: Docket Management Facility, U.S. Department ofTransportation, 1200 

New Jersey Avenue SE., West Building Ground Floor, Room W 12-140, Washington, DC 

20590-000 I. 
• Hand De li very: 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 proposed AD, contact Rolls-Royce pic, 

Corporate Communications, P.O. Box 3 1, Derby, England, DE248BJ; phone: 011-44-

1332- 242424; fax: 011-44-1332-249936; email: http://www.rollsroyce.com/contact/civil_team.jsp; Web site: https://www.aeromanager.com. You may 

view this service information at the FAA, Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA. For information on the availability of this 

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. F AA-20 14-0363; 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 proposed AD, the mandatory continuing 

airworthiness information (MCAJ), the 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: Wego Wang, Aerospace Engineer, 

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

Executive Park, Burlington, MA 01803; phone: 781-238-7134; fax: 78 1-238-7199; email: 

we go. wang@faa.gov. 

SUPPLEMENTARY INFORMA TJON: 

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. 

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Include "Docket No. FAA-2014-0363; Directorate Identifier 2014-NE-08-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 based on those 

comments. 

We will post all comments we receive, without change, to 

ht1p://www.regulations.gov, including any personal information you provide. We will 

also post a report summari zing each substantive verbal contact with FAA personnel 

concerning this proposed 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 2014-0089, dated 

April 15, 2014 (referred to hereinafter as "the MC/\1"), to correct an unsafe condition for 

the specified products. The MCAI states: 

Fuel leaks from the engine have occurred in-service due to 

damage to sections of the fan case low-pressure (LP) fuel 

tube which runs between the fuel oil heat exchanger 

(FOHE) and the high pressure fuel pump. Fret1age damage 

between the securing c lips and the tube outer surface has 

been caused by excessive movement within the system that 

resulted from deterioration ofthe FOl-IE mounting 

hardware. The thinning of the tube wall causes the tube to 

fracture and fuel loss to occur. 

This condition, if not detected and corrected, could lead to a 

critical fuel imbalance or in-flight fuel starvation, possibly 

resulting engine in-tlight shut-down and, consequently, reduced 

control of the aeroplane. 

For the reasons described above, this AD requires repetitive onwing and in-shop inspections and, depending on findings, 

replacement of fan case LP fuel tubes, clips and FOl-IE mounting 

hardware. 

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You may obtain further information by examining the MCAI in the AD docket on 

the Internet at http://www.regulations.gov by searching for and locating Docket No. 

FAA-2014-0363. 

Relevant Service Information 

RR has issued Alert Non-Modification Service Bulletin (NMSB) No. RB.211-73-

AH522, Revision I, dated March 18, 2014. The Ale11 NMSB describes procedures for 

on-wing and in-shop inspection and replacement if necessary, of the LP fuel tubes and 

FOHE mounts and associated hardware. 

FAA's Determination and Requirements of This Proposed AD 

This product has been approved by the aviation authority of the United Kingdom 

and is approved for operation in the United States. Pursuant to our bilateral agreement 

with the European Community, EASA has notified us of the unsafe condition described 

in the MCAl and service information referenced above. We are proposing this AD 

because we evaluated all information provided by EASA and determined the unsafe 

condition exists and is likely to exist or develop on other products of the same type 

design. This proposed AD would require inspection of affected LP fuel tubes and FOHE 

mounts and associated hardware and, if necessary, replacement with a part eligible for 

installation. 

Costs of Compliance 

We estimate that this proposed AD would affect about 50 engines installed on 

airplanes of U.S. registry. We also estimate that it would take about 6 hours per engine to 

comply with this proposed AD. The average labor rate is $85 per hour. Based on these 

figures, we estimate the cost of this proposed AD on U.S. operators to be $25,500. 

Authority for This Rulemaking 

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

aviation safety. Subtitle I, section I 06, describes the authority or the FAA Administrator. 

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"Subtitle VU: Aviation Programs," describes in more detail the scope of the Agency's 

authority. 

We are issuing this rulemaking under the authority descri bed in "Subtitle VII, 

Part A, Subpart III, Section 44701: General requirements." Under that section, Congress 

charges the FAA with promoting safe flight of civil aircraft in air commerce by 

prescribing regulations for practices, methods, and procedures the Administrator finds 

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

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

identified in this rulemaking action. 

Regulatory Findings 

We 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 this proposed regulation: 

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

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

( 44 FR 11 034, February 26, 1 979). 

(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 ofthe Regulatory Flexibility Act. 

List of Subjects in 14 CFR Part 39 

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

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The Proposed Amendment 

Accordingly, under the authority delegated to me by the Administrator, the FAA 

proposes to amend 14 CFR part 39 as follows: 

PART 39- AIRWORTIDNESS DIRECTIVES 

I. 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 adding the following new airworthiness directive 

(AD): 

Rolls-Royce pic: Docket No. FAA-2014-0363; Directorate Identifier 2014-NE-08-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 

None. 

(c) Applicability 

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

772B-60 turbofan engines. 

(d) Reason 

This AD was prompted by fuel leaks caused by damage to the fan case lowpressure (LP) fuel tube. We are issuing this AD to prevent failure of the fan case LP fuel 

tube, which could lead to an in-flight shutdown of one or more engines due to fuel 

starvation, loss of thrust control, and damage to the airplane. 

(e) Actions and Compliance 

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

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(1) For engines that have 3,200 or more flight hours since new (FHSN) on the 

effective date of this AD, within 800 flight hours (FHs) after the effective date of this 

AD, accomplish an on-wing inspection of fan case LP fuel tubes, part number (PIN) 

FW53576, and associated clips, and the fuel oil heat exchanger (FOHE) mounts and 

associated hardware. Use paragraph 3.A. of RR Alert Non-Modification Service Bulletin 

(NMSB) No. RB.21 1-73-AH522, Revision I, dated March 18, 2014, to do the inspection. 

Thereafter, inspect at intervals not to exceed 4,000 FHs. 

(2) For engines that have less than 3,200 FHSN on the effective date of this AD, 

before exceeding 4,000 FHSN, accomplish an on-wing inspection of fan case LP fuel 

tubes, PIN FW53576, and associated clips, and the FOHE mounts and associated 

hardware. Use paragraph 3.A. ofRR Alert NMSB No. RB.2 11 -73-AH522, Revision 1, 

dated March 18, 20 14, to do the inspection. Thereafter, inspect at intervals not to exceed 

4,000 FHs. 

(3) After the effective date of this AD, during each engine shop visit, inspect the 

fan case LP fuel tubes, PINs FW26589, fW36335 , FW26587, FW535776, and FW53577, 

and associated c lips, and the FOHE mounts and associated hardware. Use paragraph 3.B. 

ofRR Alert NMSB No. RB.211-73-AH522, Revision 1, dated March 18, 2014, to do the 

inspection. 

(4) If any inspection required by paragraphs (e)( I), (e)(2), or (e)(3) of this AD 

fails, replace the affected part with a part eligible for installation. 

(f) Credit for Previous Actions 

( I) If, before the effective date of this AD, you performed the inspections and 

corrective actions required by paragraphs (e)( I), (e)(2), or (e)(3) of this AD using RR 

Alert NMSB No. RB.211-72-AH522, dated September 20, 20 13, you met the initial 

inspection requirements of paragraphs (e)( I). (e)(2), or (e)(3) of this AD. 

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(2) Any inspections and corrective actions performed before the effective date of 

this AD are not terminating action for the repetitive inspections required by paragraphs 

(e)(I), (e)(2), and (e)(3) of this AD. 

(g) Definitions 

For the purposes of this AD: 

(I) An "engine shop visit" is the induction of an engine into the shop for 

maintenance involving the separation of pairs of major mating engine flanges, except that 

the separation of engine flanges solely for the purposes of transportation without 

subsequent engine maintenance is not an engine shop visit. 

(2) The fan case LP fuel tubes and associated clips, and the FOHE mounts and 

associated hardware are eligible for installation if they have passed the inspection 

requirements of paragraphs (e)(l), (e)(2), and (e)(3) of this AD. 

(h) Alternative Methods of Compliance (AMOCs) 

The Manager, Engine Certification Office, FAA, may approve AMOCs to this 

AD. Use the procedures found in 14 CfR 39. 19 to make your request. 

(i) Related Information 

(I) For more information about this AD, contact Wego Wang, Aerospace 

Engineer, Engine Certifi cation Office, FAA, Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 01803; phone: 781-238-7134; fax: 781-238-

7199; email: wego.wang@faa.gov. 

(2) Refer toMCAT European Aviation Safety Agency AD 20 14-0089, dated April 

15, 2014, for more information. You may examine the MCAI in the AD docket on the 

Internet at http://www.regulations.gov by searching for and locating it in Docket No. 

FAA-20I4-0363. 

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(3) RR Alert NMSB No. RB.2 11-73-AH522, Revision 1, dated March 18, 20 14, 

which is not incorporated by reference in this AD, can be obtained from Rolls-Royce pic 

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

(4) For servi ce information idenlitied in this AD, contact Rolls-Royce pic, 

Corporate Communications, P.O. Box 31, Derby, England, DE248BJ; phone: 011-44-

1332- 242424; fax: 0 11-44-1332- 249936; email: http://www.rollsroyce.com/contact/civil_team.jsp; Web site: https://www.aeromanager.com. 

(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 of this material at the FAA, call 781-238-71 25. 

Issued in Burlington, Massachusetts, on June 27, 20 14. 

Colleen M. D' Alessandro, 

Assistant Directorate Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

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