DEi> ARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[4910-13-P] 

!Docket No. FAA-2012-1327; Directorate Identifier 2012-NE-47-AD; Amendment 

39-17934; AD 2014-16-10] 

RIN 2120-AA64 

Ainvorthiness Directives; Rolls-Royce pic Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are superseding airworthiness directive (AD) 2013-12-01 for all RollsRoyce pic (RR) model RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. AD 

2013-12-0 I required a one-time ultrasonic inspection (UI) of low-pressure (LP) 

compressor blades with more than 2,500 flight cycles since new or last inspection. This 

AD requires initial and repetitive Uls of the affected LP compressor blades. This AD was 

prompted by LP compressor blade partial airfoil release events. We arc issuing this AD to 

prevent LP compressor blade airfoil separations, damage to the engine, and damage to the 

airplane. 

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

ADDRESSES: for service information identified in this AD, contact Rolls-Royce pic, 

P.O. Box 31, Derby DE24 8BJ, UK; phone: 44 0 1332 242424; fax: 44 0 1332 249936. 

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 12-1 327; or in person at the Docket 

Management Facility between 9 a.m. and 5 p.m., Monday tlu·ough Friday, except Federal 

holidays. The AD docket contains this 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 Document Management Facility, 

U.S. Department of Transportation, Docket Operations, M-30, West Building Ground 

Floor, Room W 12- 140, 1200 New Jersey Avenue SE., Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: Robert Green, Aerospace Engineer, 

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

Executive Park, Burlington, MA 01803; phone: 781-238-7754; fax: 781-238-7199; email: 

robert.green@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to 

supersede AD 2013-12-01, Amendment 39-17478 (78 FR 37703, June 24, 2013), ("AD 

2013-12-01"). AD 20 13-12-01 applied to the specified products. The NPRM published in 

the Federal Register on May 23, 2014 (79 FR 29694). The NPRM proposed to require 

initial and repetitive Uls of the affected LP compressor blades. 

Comments 

We gave the public the opportunity to participate in developing this AD. We 

received no comments on the NPRM (79 FR 29694, May 23, 2014). 

Conclusion 

We reviewed the available data and determined that air safety and the public 

interest require adopting this AD as proposed. 

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Costs of Compliance 

We estimate that this AD affects 56 engines installed on airplanes of U.S. registry. 

We also estimate that it will take about 44 hours per engine to comply with the initial 

inspection requirements in this AD. The average labor rate is $85 per hour. Based on 

these figures, we estimate the cost of this AD on U.S. operators to be $209,440. 

Authority for this Rulcmaking 

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

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

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

authority. 

We are issuing this rulemaking under the authority described 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 like ly to exist or develop on products 

identified in this rulemaking action. 

Regulatory Findings 

This AD will not have federalism implications under Executive Order 13132. This 

AD will 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 this AD: 

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

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

( 44 FR 1 I 034, February 26, 1979), 

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(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. 

Adoption of the Amendment 

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

amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: 

PART 39 - AIRWORTHINESS DIRECTIVES 

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) 2013-12-

01, Amendment 39-17478 (78 FR 37703, June 24, 20 13), and adding the following new 

AD: 

2014-16-10 Rolls-Royce pic: Amendment 39-17934; Docket No. FAA-2012-1327; 

Directorate Identifier 2012-NE-47-AD. 

(a) Effective Date 

This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

(b) Affected ADs 

This AD supersedes AD 20 13-12-01 , Amendment 39-17478 (78 FR 37703, June 

24, 2013). 

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(c) Applicability 

This AD applies to Rolls-Royce pic (RR) model RB2 1 I Trent 768-60, 772-60, 

and 772B-60 turbofan engines, with low-pressure (LP) compressor blade, part numbers 

(PINs) FK23411 , FK25441 , FK25968, FW II901 , FWl5393, FW23643, FW2:3741, 

FW23744, KH23403, or KH23404, installed. 

(d) Unsafe Condition 

This AD was prompted by LP compressor blade partial airfoil release events. We 

are issuing this AD to prevent LP compressor blade airfoil separations, engine damage, 

and damage to the airplane. 

(e) Actions and Compliance 

Unless already done, do the following actions. 

(1) Ultrasonic Inspection (Ul) of LP Compressor Blade 

(i) After the effective date of this AD, ultrasonically inspect each LP compressor 

blade before the blade exceeds 3,600 cycles since new (CSN) or before further flight, 

whichever occurs later. Repeat the Ul of the blade every 2,400 cycles since last 

inspection (CSLT). 

(ii) For any LP compressor blade that exceeds 2,200 CSLI on the effective date of 

this AD, inspect the blade before exceeding 3,000 CSLI or before furthe r flight, 

whichever occurs later. Thereafter, perform the repetitive inspections required by this 

AD. 

(iii) Use paragraph 3, excluding subparagraphs 3.A.(9), 3.B.(5), 3.C.(4), 3.D.(3), 

3.E.(5), 3.F.(IO), anci3.G.(7), ofRR Alert Non-Modification Service Bulletin (NMSB) 

RB.211-72-AH465, elated July 15, 20 13, to perform the inspections required by this AD. 

(2) Usc of Replacement Blades 

LP compressor blades, PINs FK2341 I, FK25441 , FK25968, FW I 190 I, 

FW15393, FW23643, FW23741 , FW23744, KH23403, or Kli23404, that have 

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accumulated at least 3,600 CSN or 2,400 CSLI arc eligible for installation if the blade has 

passed the UI required by this AD. 

(f) Credit for Previous Actions 

If you performed aUT of an affected LP compressor blade before the effective 

date of this AD using RR NMSB No. RB.211-72-G702, dated May 23, 20 II ; or RR 

NMSB No. RB.2 li-72-G872, Revision 2, dated March 8, 2013, or earlier revisions; or 

RR NMSB No. RB.21 1-72-H31 1, dated March 8, 20 13; or Engine Manua l E-Trent-1RR, 

Task 72-31-11-200-806, you have met the initial inspection requirements of this AD. 

However, you must still comply with the repetitive 2,400 CSLI requirement ofthis AD. 

(g) Alternative Methods of Compliance (AMOCs) 

The Manager, Engine Certification Office, may approve AMOCs for this AD. Use 

the procedures found in 14 CFR 39.19 to make your request. 

(h) Related Information 

(1) For more information about this AD, contact Robert Green, Aerospace 

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

England Executive Park, Burlington, MA 01803; phone: 781-238-7754; fax: 781 -238-

7199; email: Robert.Green@faa.gov. 

(2) Refer to MCAI European Aviation Safety Agency AD 2014-003 1, dated 

February 4, 2014, for more infom1ation. You may examine the MCAI in the AD docket 

on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-20 12-1327-

0007. 

(i) Material Incorporated by Refer ence 

(1) The Director of the Federal Register approved the incorporation by reference 

(JBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and I CFR 

part 51. 

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(2) You must use this service information as applicable to do the actions required 

by this AD, unless the AD specifies otherwise. 

(i) Rolls-Royce pic Alert Non-Modification Service Bulletin No. RB.2 11-72-

AH465, dated July 15, 2013. 

(ii) Reserved. 

(3) For RR service information identified in this AD, contact Rolls-Royce pic, 

P.O. Box 3 1, Derby DE24 8BJ, UK; phone: 44 0 1332 242424; fax: 44 0 1332 249936. 

(4) You may view this service information at 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. 

(5) You may view this service information at the National Archives and Records 

Administration (NARA). For information on the availability of this materia l at NARA, 

call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibrlocations. html. 

Issued in Burli ngton, Massachusetts, on August l , 2014. 

Colleen M. D' Alessandro, 

Assistant Directorate Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

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