[4910-13-P] 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2012-1100; Directorate Identifier 2012-NE-29-AD; Amendment 

39-17385; AD 2013-05-13] 

RIN 2120-AA64 

Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new airworthiness directive (AD) for certain RollsRoyce Deutschland Ltd & Co KG (RRD) BR 700-710 series turbofan engines. This AD 

requires replacement of the affected fuel pump splined couplings. This AD was prompted 

by service experience that demonstrated premature wear of the splined coupling on the 

fuel pump. We are issuing this AD to prevent failure of the engine and loss ofthe 

airplane. 

DATES: This AD becomes effective [Insert date 35 days after date of publication in the 

FEDERAL REGISTER]. 

ADDRESSES: The Docket Operations office is located at Docket Management Facility, 

U.S. Department of Transportation, 1200 New Jersey Avenue SE., West Building Ground 

Floor, Room W12-140, Washington, DC 20590-0001. 
FOR FURTHER INFORMATION CONTACT: Frederick Zink, Aerospace Engineer, 

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

Executive Park, Burlington, MA 01803 ; email: frederick.zink@faa.gov; phone: 781-238-

7779; fax: 781-238-7199. 

SUPPLEMENTARY INFORMATION: 

Discussion 

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

include an AD that would apply to the specified products. That NPRM was published in 

the Federal Register on November 7, 2012 (77 FR 66771). That NPRM proposed to 

require replacement of the affected fuel pump splined couplings. The Mandatory 

Continuing Airworthiness Information states: 

Comments 

In-service experience of RRD BR 700-71 0 fuel pump installed on 

the rear face of the accessory gearbox identified premature wear of 

the splined coupling, which caused damage to the splined 

coupling. 

This condition, if not corrected, could lead to failure of engine fuel 

supply, likely resulting in an uncommanded in-flight shutdown and 

consequently reduced control of the aeroplane. 

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

considered the comment received. 

Request to Withdraw the AD 

An anonymous commenter requested that the FAA withdraw the proposed rule 

(77 FR 66771 , November 7, 2012). The commenter indicated that the rule is a "waste of 

government resources" because a service bulletin has been issued and larger companies 

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and individuals will comply because it is in their best interest while smaller companies 

will "suffer." 

We do not agree. We reviewed the service experience of the affected fuel pump 

splined couplings and determined that an unsafe condition exists and that corrective 

action is required. Although some operators may take corrective action based on the 

service bulletin, the issuance of an AD makes compliance mandatory for all. We made no 

change to the AD. 

Change to Installation Prohibition Paragraph 

We determined when reviewing the proposed rule (77 FR 66771 , November 7, 

2012), that the Installation Prohibition paragraph (g) was not consistent with the 

compliance paragraph (e). The Installation Prohibition paragraph in the NPRM forbids 

returning to service any engine with a fuel pump with an affected splined coupling that 

has accumulated 4,000 hours time in service (TIS). This prohibition is not consistent with 

compliance paragraph (e) which allows engines with affected spline couplings to be 

returned to service for those engines with 3,750 hours or more TIS, while allowing an 

additional 250 hours TIS to comply. The Installation Prohibition paragraph should have 

been directed against "installing" an affected fuel pump into an engine or installing an 

engine with an affected fuel pump into an aircraft rather than against returning an engine 

to service with an affected fuel pump. 

The Installation Prohibition paragraph now reads: "After the effective date of this 

AD, do not install into any engine a fuel pump with an affected splined coupling that has 

accumulated 4,000 hours TIS, or install any engine with an affected splined coupling that 

has accumulated 4,000 hours TIS onto an airplane." 

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Conclusion 

We reviewed the available data, including the comment received, and determined 

that air safety and the public interest require adopting the AD with the changes described 

previously. We determined that these changes will not increase the economic burden on 

any operator or increase the scope of the AD. 

Costs of Compliance 

We estimate that this AD affects about 1,040 engines installed on airplanes of 

U.S. registry. We also estimate that it will take about 6 hours per engine to comply with 

this AD. The average labor rate is $85 per hour. Required parts cost about $1 ,035 per 

engine. Based on these figures, we estimate the cost of this AD to U.S. operators to be 

$1 ,606,800. 

Authority for This Rulemaking 

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

aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. 

"Subtitle VII: Aviation Programs," describes in more detail the scope ofthe Agency's 

authority. 

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

Part A, Subpart III, Section 44 701: 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 likely to exist or develop on products 

identified in this rulemaking action. 

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Regulatory Findings 

We determined that 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 this AD: 

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); and 

3. 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. 

We prepared a regulatory evaluation of the estimated costs to comply with this 

AD and placed it in the AD docket. 

Examining the AD Docket 

You may examine the AD docket on the Internet at http: //~ww. egul tion ; 

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 regulatory 

evaluation, any comments received, and other information. The street address for the 

Docket Operations office (phone: (800) 647-5527) is provided in the ADDRESSES 

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

List of Subjects in 14 CFR Part 39 

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

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Adoption of the Amendment 

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

amends 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 adding the following new AD: 

2013-05-13 Rolls-Royce Deutschland Ltd & Co KG (Formerly Rolls-Royce 

Deutschland GmbH, and BMW Rolls-Royce pic): Amendment 39-17385; Docket No. 

FAA-2012-1100; Directorate Identifier 2012-NE-29-AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes effective [Insert date 35 days after 

date of publication in the FEDERAL REGISTER]. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-

710A1-10 and BR700-710A2-20 turbofan engines, all serial numbers, and BR700-

71 OC4-11 turbofan engines that have either of the following hardware configuration 

standards engraved on the engine data plate: 

(1) standard "71 OC4-11 " -- RRD Alert Non-Modification Service Bulletin 

(NMSB) SB-BR700-72-101466 standard not incorporated, or 

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(2) standard "710C4-11/10" -- RRD Alert NMSB SB-BR700-72-101466 standard 

incorporated. 

(d) Reason 

This AD was prompted by service experience that demonstrated premature wear 

of the splined coupling on the fuel pump. We are issuing this AD to prevent failure ofthe 

engine and loss ofthe airplane. 

(e) Actions and Compliance 

Unless already done, do the following. 

(1) After the effective date of this AD, replace the fuel pump splined coupling as 

follows and every 4,000 hours time in service (TIS) thereafter: 

(i) If the engine has 3,750 hours TIS or more on the effective date ofthis AD, 

within 250 hours TIS. 

(ii) If the engine has less than 3,750 hours TIS on the effective date of this AD, 

before reaching 4,000 hours TIS. 

(2) If you replaced the engine fuel pump splined coupling before the effective 

date of this AD, replace the fuel pump splined coupling before reaching 4,000 hours TIS 

since last replacement, or before further flight, whichever comes later. 

(f) Installation Prohibition 

After the effective date of this AD, do not install into any engine a fuel pump with 

an affected splined coupling that has accumulated 4,000 hours TIS, or install any engine 

with an affected splined coupling that has accumulated 4,000 hours TIS onto an airplane. 

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(g) 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. 

(h) Related Information 

(1) For more information about this AD, contact Frederick Zink, Aerospace 

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

England Executive Park, Burlington, MA 01803; email: frederick.zink@faa.gov; phone: 

781-238-7779; fax: 781-238-7199. 

(2) Refer to Mandatory Continuing Airworthiness Information AD No. 2012-

0161 , dated August 24, 2012, and RRD Alert NMSB SB-BR700-72-A900509, Revision 

3, dated August 2, 2012, for related information. 

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

Deutschland Ltd & Co KG, Eschenweg 11 , Dahlewitz, 15827 Blankenfelde-Mahlow, 

Germany; phone: 49 0 33-7086-1883; fax: 49 0 33-7086-3276. You may view the 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, 

call781-238-7125. 

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(i) Material Incorporated by Reference 

None. 

Issued in Burlington, Massachusetts, on March 7, 2013 . 

Colleen M. D' Alessandro, 

Assistant Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

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