[4910-13-P] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFRPart 39 [Docket No. FAA-2012-1289; Directorate Identifier2012-NE-43-AD; Amendment 39-18591; AD 2016-14-10] .RIN 2120-AA64 Airworthiness Directives; CFM International, S.A. Turbofan Engines Modified by Supplemental Type Certificate SE00034EN AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. SUMMARY: We are superseding airworthiness directive (AD) 2013-02-02 for certain CFM International, S.A. CFM56-3, CFM56-3B, and CFM56-3C turbofan engines. AD 2013-02-02 required removal from service ofcertainhigh-pressure turbine (HPT) disks manufactured by Global Material Solutions ofPratt & Whitney, at reduced maximum life limits. This AD corrects the serial numbers (SINs) listed in AD 2013-02-02. This AD was promptedbyreports that certain HPT disk SINs in AD 2013-02-02 and in certain Pratt & Whitney service information are incorrect. We are issuing this AD to prevent uncontained release ofmultiple turbine blades, damage to the engine, and damage to the airplane. DATES: This AD is effective [INSERT DATE 15 DAYS AFTERDATE OF PUBLICATION IN THE FEDERAL REGISTER].The Director ofthe Federal Register approved the incorporationbyreference ofa certainpublication listed inthis AD as of[INSERT DATE 15 DAYS AFTERDATE OF PUBLICATION IN THE FEDERAL REGISTER]. We mustreceive any comments onthis AD by [INSERT DATE 45 DAYS AFTERDATE 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:

• Federal eRulemaking Portal: Go to http://www.regulations.gov. Followthe instructions for submitting comments.

• Fax: 202-493-2251.

• Mail: U.S. Department ofTransportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 NewJersey Avenue SE., Washington, DC 20590.

• Hand Delivery: U.S. Department ofTransportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 NewJersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified inthis AD, contact Pratt & Whitney, 400 Main St., East Hartford, CT06108; phone: 860-565-7700; fax: 860-565-1605. You may view this service information atthe FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. For information onthe availability ofthis material at the FAA, call 781-238-7125. Itis also available onthe Internet at http://www.regulations.gov by searching for and locating DocketNo. FAA-2012-1289.

2Examining the AD Docket Youmay examine the AD docket onthe Internet at http://www.regulations.govby searching for and locating DocketNo. FAA-2012-1289; or inperson at the Docket Management Facility between 9 a.m. and 5 p.m., Mondaythrough 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 in the ADDRESSES section. Comments will be available inthe AD docket shortly after receipt. FOR FURTHERINFORMATION CONTACT: Kenneth Steeves, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7765; fax: 781-238-7199; email: kenneth.steeves@faa.gov. SUPPLEMENTARY INFORMATION: Discussion OnJanuary 14, 2013, we issued AD 2013-02-02, Amendment 39-17323 (78 FR 5712, January 28, 2013), ("AD 2013-02-02") for all CFM56-3, CFM56-3B, and CFM56-3C turbofan engines modified by Supplemental Type Certificate SE00034EN, with certain HPT disks, installed. AD 2013-02-02 required removal from service of certainhigh-pressure turbine (HPT) disks manufactured by Global Material Solutions of Pratt & Whitney, at reduced maximum life limits. AD 2013-02-02 resulted from a report ofa forging process error during manufacture ofthese HPT disks. We issued AD 2013- 02-02 to prevent uncontained release ofmultiple turbine blades, damage to the engine, and damage to the airplane.

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### Actions Since AD 2013-02-02 was Issued Since we issued AD 2013-02-02, we received reports that certain HPT disk SINs GLKBAA9307, GLKBAA9335, GLKBAA9404, GLKBAA9407, and GLKBAA9409, in AD 2013-02-02 and in certain Pratt & Whitney service information are incorrect. The correct SINs are: GKLBAA9307, GKLBAA9335, GKLBAA9404, GKLBAA9407, and GKLBAA9409. 

### Related Service Information under 1 CFRPart 51 We reviewed Pratt & Whitney Corp. Special InstructionNo. 6F-12, Revision A, dated May 17, 2016. The Special Instruction describes procedures for reducing the maximum life limit for affected HPT disks. This service information is reasonably available because the interested parties have access to it throughtheir normal course of business or by the means identified inthe ADDRESSES section. 

### FAA's Determination We are issuing 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 ofthe same type design. 

### AD Requirements This AD requires removal from service ofaffected HPT disks at certain recalculated reduced maximum life limits. 

### FAA'sJustification and Determination oftheEffective Date No domestic operators use this product. Therefore, we find that notice and opportunity for priorpublic comment are unnecessary and that good cause exists for making this amendment effective in less than 30 days.

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### Comments Invited This AD is a final rule that involves requirements affecting flight safety, and we did not provide you with notice and an opportunity to provide your comments before it becomes effective. However, we invite youto send any written data, views, or arguments about this AD. Send your comments to an address listed underthe ADDRESSES section. Include "DocketNo. FAA-2012-1289; Directorate Identifier 2012-NE-43-AD" at the beginning ofyour comments. We specifically invite comments onthe overall regulatory, economic, environmental, and energy aspects ofthis AD. We will consider all comments received by the closing date and may amendthis AD because ofthose 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 AD. 

### Costs ofCompliance We estimate that this AD affects 0 engines installed on airplanes ofU.S. registry. We also estimate that it will take about 61 hours per engine to comply with this AD. The average labor rate is $85 perhour. Requiredparts cost about $0 per engine. Based on these figures, we estimate the cost ofthis AD onU.S. operators to be $0. 

### Authority for this Rulemaking Title 49 ofthe United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority ofthe FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope ofthe Agency's authority.



### 5We are issuing this rulemaking underthe authority described in Subtitle VII, Part A, Subpart III, Section44701, "General requirements." Underthat section, Congress charges the FAA with promoting safe flight ofcivil 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 ofthat authority because it addresses an unsafe condition that is likely to exist or develop onproducts 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 onthe States, onthe relationship between the national government and the States, or on the distribution ofpower and responsibilities among the various levels ofgovernment. For the reasons discussed above, I certify that this AD: (1) Is not a "significantregulatory action" under Executive Order 12866, (2) Is not a "significantrule" under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaskato the extent that itjustifies making a regulatory distinction, and (4) Will not have a significant economic impact, positive or negative, on a substantial number ofsmall entities under the criteria ofthe Regulatory Flexibility Act. List ofSubjects in 14 CFRPart 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

6Adoption ofthe Amendment Accordingly, underthe authority delegated to me by the Administrator, the FAA amends part 39 ofthe Federal Aviation Regulations (14 CFRpart 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) 2013-02- 02, Amendment 39-17323 (78 FR 5712, January 28, 2013), ("AD 2013-02-02"), and adding the following newAD: 2016-14-10 CFM International, S.A. Turbofan Engines Modified by Supplemental Type Certificate SE00034EN: Amendment 39-18591; DocketNo. FAA-2012-1289; Directorate Identifier 2012-NE-43-AD. (a) Effective Date This AD is effective [INSERT DATE 15 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. (b) Affected ADs This AD supersedes AD 2013-02-02. (c) Applicability This AD applies to CFM International, S.A. CFM56-3, CFM56-3B, and CFM56-3C turbofan engines, modified by Supplemental Type Certificate SE00034EN, with a high-pressure turbine (HPT) disk, part number (PIN) 880026, serial number (SIN)

7GKLBAA9307, GKLBAA9335, GKLBAA9404, GKLBAA9407, or GKLBAA9409, installed. (d) Unsafe Condition This AD was promptedby reports that certain HPT disk serial numbers in AD 20**13-02~02** and in certain Pratt & Whitney service information are incorrect. We are issuing this AD to prevent uncontained release ofmultiple turbine blades, damage to the engine, and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) For CFM56-3, CFM56-3B, and CFM56-3C turbofan engines operating to 20,100 lbs maximumtakeoff(MTO) thrust, remove the HPT disk from service on or before accumulating 8,000 cycles-since-new (CSN). (2) For CFM56-3B and CFM56-3C turbofan engines operating to 22,100 lbs MTO thrust, remove the HPT disk from service on orbefore accumulating 8,000 CSN. (3) For CFM56-3C turbofan engines operating to 23,500 lbs MTO thrust, remove the HPT disk from service on or before accumulating 4,000 CSN. (4) ForHPT disks**thc~.t** have been used in multiple models or thrust installations,

use the formula inthe ADDED DATA section ofPratt & Whitney Special Instruction 6F12, Revision A, dated May 1 7, 2016 to calculate the remaining life onthe disk. (f) Alternative Methods ofCompliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: ANE-AD-AMOC@faa.gov.8(g) 

### Related Information For more information about this AD, contact Kenneth Steeves, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803 ; phone: 781-238-7765 ; fax: 781-238-7199; email:kenneth.steeves@faa

.gov. 

### (h) Material Incorporated by 

### Reference (1) The Director ofthe Federal Register approved the incorporationby reference (IBR) ofthe service information listed in this paragraph under 5 U.S.C. 552(a) and 1CFR part 51.(2) You must use this service information as applicable to do the actions required bythis AD, unless the AD specifies otherwise. (i) Pratt & Whitney Corp

. Special InstructionNo. 6F-12, Revision A, dated May 17, 2016. (ii) Reserved. (3) ForPratt & Whitney service information identified inthis AD, contact Pratt & Whitney, 400 Main St., East Hartford, CT 06108;phone: 860-565-7700; fax: 860-565- 1605. (4) You may viewthis service information at FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. For information onthe availability ofthis material at the FAA, call 781-238-7125. (5) You may viewthis service information at the National Archives and Records Administration (NARA). For information onthe availability ofthis material atNARA,

9call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibrlocations.html. Issued in Burlington, Massachusetts, onJuly 11, 2016.

ColleenM. D'Alessandro, Manager, Engine & Propeller Directorate, Aircraft Certification Service.

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