### DE PA R TME NT O F TRAN S PO RTAT ION Fe d e r a l Av iation A dmini s tration 14 CFR Pa rt 39 [4910 -1 3-P]

[Docket N o . F AA-2015-0900 ; Dir ectora te I de ntifier 2015- NE -12-AD ; Am endm ent 39-18251 ; AD 201 5 -17-18] RI N 21 2 0- AA64 A irworthine ss Directives ; Turbom eca S

. A

. T urbo s h aft E ng in es AGENC Y: Federal Av i ation Adminjst ration (FAA), DOT. 

### AC T ION: Final ru le. 

### S U MM ARY: We a re adoptin g a new airwo rthiness directive 

### (AD) for certai n T urbo meca S.A

. Arr iu s 2F turboshaft engines wi th a certai n pa r t nu mber o il p ump i nstall ed. T hi s A D re qui res i nspect ion, and if necessary , replacement befo re furthe r flight of th e o il pump driver assembly and/or t h e o il pump s haft , or th e oil pump i tse lf. This AD
was pro mpted by cases of deterioratio n of the gas generator f ront bea rin g d ue t o a li nk l oss betwee n t he pump dri ver a nd the o il pump shaft. We are i ss ui ng t h is AD to prevent li nk loss between the pump driver and the o i l pump shaft , wh ich cou ld lead to an eng ine i n- fl ig ht s h utd ow n , fo rced land ing, and damage to th e helicop ter . 

### D AT ES : This 

### AD becomes effective [INSE RT DAT E 35 D AYS AFTER D ATE O F PUBLICATION IN THE FED ERAL REG ISTER]. T he Di rector of th e federal Register approved the i ncorporation b y refe rence of a
ce rta in p ub li cat io n listed in this AD as of [I NSE RT DAT E 35 DAYS AFTE R DAT E OF P UBLICATION IN THE FEDERAL REGISTER]
. 

### ADDRES SES : For service information id entified in this A D , co n tact T urbomeca S.A. , 40220 Tarnos , F r ance; p ho ne: 33 (0)5 59 74 40 00; telex: 570 042; fax: 33 (0)5 59 74 45 15

. Yo u may v iew this serv ice info rn 1ati on at the FAA , Eng i ne & 

### Propeller Di rec torate ,12 New England Executive Park , Burlington , MA. For information on the availability of th i s material at the FAA, call 781-238-7125

. 

### It is also available on the Internet at http://www.regulations.gov by searching for and l ocating Docket No
. F AA-20 15-0900. 

### Exam in ing the AD Docket You may exam ine the AD docket on the Intemet at http ://www.regulations.gov by searching for and locating Docket No. FAA

- 2015

- 0900; 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 tlus AD , the mandatory cont inu ing airworthiness infom1ation (MCAI), the regulatory evaluation , any comments rece i ved , and other informati on. 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. , Washinf,rton , DC 20590

. 

### F O R FURTHER INFORMAT I ON CONTACT: Philip Haberlen , Aerospace Engineer, Engine Certification Office, FAA , Engine & Prope ll er Directorate , 12 New England Executive Park, Burlington , MA 01803; phone: 781-238

- 7770; fax: 781-238-7199; email: philip

. haberlen @ faa.gov. 

### SUPPLEMENTA RY INFORMA T ION: Di scu ss i o n We issued a notice of proposed rulemaki ng (NPRM) to amend 14 CFR part 39 by add i ng an AD that would apply to the specified products. The NPRM was published in t he Federa l Register on May 21 , 2015 (80 FR 29224)

. The NPRM proposed to correct an unsafe condition for the specified products. The MCAI states: A r isk of an in-fl ight shutdown (IFSD) has been identified on an ARRIUS 2F engine, due to deterioration of gas generator front bearing. This could be the result of lack of lubrication , due to a link loss between pump dr iver and o il pump shaft. 2This condi t ion , if not detected and corrected, could lead to cases of IFSD , poss i bly resulting in forced landing with consequent damage to the helicopter and injury to occupants
. 

### Related Serv ic e I nfo rmation under 1 CFR Part 51 Turbomeca S.A. has issued Mandatory Servi ce Bulletin (MSB) No. 319 79 4834, Vers i on B , dated October 21,20 1 4. The MSB describes procedures for inspecting the o il pump driver assembly on the oil pump s h aft , th e pump driver splines , and the oi l pump splines

. This service information is reasonably available because the interested part ies have access to it through their normal course of business or by the means identi fied in the ADDR E SS E S section of this AD. 

### Co mment s We gave th e public the opportunity to partic i pate in develop in g this AD. We
rec eived no comments on the NPRM (80 FR 29224 , May 21 , 20 15). 

### Co nclu s ion We reviewed the availab le data and determined that ai r safety and the p ublic interest require adopt ing this AD as proposed. 

### Costs of Co mplianc e We est i mate that this AD affects about 96 engines installed on helicopters of U.S. registry. We a lso estimat e that it would take about two hours per engine to comply with this AD. The average labor rate is $85 per hour. Required parts wou ld cost about $ 17 , 312 per engine

. Based on these figures , we estimate the cost o f thjs AD on U.S

. operators to be $1 , 678 , 272. 

### Authority for Thi s Rulem a kin g Ti tle 49 of the Un ited States Code spec ifies the FAA ' s authority to issue rules on aviation safety. Subtitle I , section I 06 , describes the authority of the FAA Admin i strator. "S ubtitle VII: Aviation Programs ," desc r ibes in more detail the scope of the Agency ' s authority

. 3We are issuing this rulemaking under the authori ty described in "Sub title VII , Part A , Subpart III , Section 44 701: General requirements. " Under that section, Congress charges the FAA wi th promoting safe flight of c ivil aircraft in air commerce by prescribing regulations for practices , methods , and procedures the Admi nistrator finds necessary for safety in air commerce. This r egulation is wi thin th e scope of that authority because it addresses an unsafe condition that is like ly t o exis t or develop on products id e ntifi ed in this rulemaking action

. 

### Regulatory Findings We determined that this AD will not have federalism implications under Execut ive Order 13132. This AD will no t have a substantial direct effect on the States, on the relationship between the national government and the S tates , or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify thi s AD: (1) Is not a "significant regulatory action" under Execu ti ve Order 1 2866, (2) Is not a "significant rule" under the DOT Regulatory Policies and Procedures ( 44 FR I I 034, February 26, 1979), (3) Wi ll not affect intrastate aviation in A laska to the ex tent that it justifi es makin g a regulatory distin ction, and (4) Will not have a sign i ficant eco nomi c impact , positive or negative, on a substant ia l number of small entities under the crite ri a of the Regulatory Flexibility Act. 

### List of S ubj ec ts in 14 CFR Part 39 Air transportation , Aircraft , Aviation safety , Incorporation by reference , Safety. 

### Ado pti on of th e A mendment Accordingly , under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:



### 4

### PART 39 

### -AIRWORTHINESS DIRECTIVES 1. The a uthority citation for part 39 continues to re ad as follows: Autho ri ty: 49 U.S.C. 106(g) , 40113 , 44701. 

### § 39.13 [Amended) 2. The FAA amends 

### § 39

. 13 by adding the following new a irworthiness directive (AD): 2015-17-18 Turbomeca S.A.: Amendment 39-18251; Docket No. FAA-2015-0900; Directorate Identifier 20 15-NE-12-AD. 

### (a) Effe cti ve Date This AD becomes effective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION 

### IN THE FEDERAL REGISTE R]. 

### (b) Affected 

### ADs None. (c) Applicability This AD app li es to all Turbomeca S.A. A tTiu s 2F turboshaft engines with oi l pump , part number (PIN) 0319155050 , installed, except for: ( 1) Eng in es , equipped with an oil pump , PIN 0319155050, that were overhau led in a Turbomeca repair center after January 1 , 2013 , a nd (2) Engines w ith a serial number of 34776 or higher , provided that the oi l pump
was not replaced on that engine since the first flight of that engine on a he li copter. 

### (d) 

### Reason T hi s AD was prompted by cases of deterio ration of the gas generator front bearing due to a li nk loss between the pump driver and the oil pump shaft. We are i ssu i ng this AD to prevent link loss between the pump driver and the oil pump shaft, which could lead to an engine in-flight sh utdown , forced landing , and damage to the helicopter.

5

### (c) Actions a nd C ompliance Comply with this AD within the compliance t im es specified , unless already done. 

### (1) Inspect the pump driver assembly on the oil pump s haft , the pump driver splines , and th e o il p ump splines , using paragraph 2.4.2, Operating Instructions , of Turbomeca S.A

. Mandatory Service Bulletin (MSB) No. 319 79 4834 , Version B , dated October 21, 2014 , as follows : (i) For engi nes with fewer than 250 engine hours (EH) , accumulated since new , s i nce last overhaul , o r s in ce last installation of an affected oil pump , whic h ever occurred later , inspect befo r e exceeding 300 EH , accumulated since new , since last overhaul , or since last installation of an affected o il p ump , as app li cable

. (ii) For eng ines with 250 EH or more , bu t fewer than 300 E H , accumulated since
new , si n ce last overhaul, o r s inc e last installation of an affected oil pump , whic h ever occurred later, inspect within 50 EI-1

. ( iii) For engines with 300 EH or more , but fewer than 800 EH , accum ul ated s ince
new , s ince last overhau l, or since last installation of an affected o il p ump , w hi chever
occur r ed l ater , i nspect within 1 00 EH. (iv) For engines with 800 El-l or more , accum ul ated si nce new , s in ce last overhaul , or since last installation of an affected oi l pump , whic heve r occurr ed late r, inspect during the next scheduled 500 EH inspectio n. (2) If any oil pump drive assembly and/o r oil pump shaft , or the oil pump i tself , fai l s the i nspectio n required by this AD , then before further flight , replace the failed part(s) with part{s) e li gible for installation. (3) The instruction to report i n spection results and the in struction to r eturn a comp li ance ce rtif i cate to Turbomeca S

. A. as state d in parag raph 2.4

. 2, Operating In str u ctions , ofT urb omeca S

. A

. MSB No
. 3 19 79 4834 , Ve rsion B , dated October 2 1 , 2014 , are not required by this AD

. 

### 6

### (f) Credit for Previous Action If you inspected the o il pump driver assembly on the oil pump shaft , the pump driver splines , and the oil pump splines , and replaced any part(s) with part(s) eligible for installation before the effective date of this AD in accordance with Turbomeca S.A. MSB No
. 319 79 4834 , Version A , dated November 25 , 2013 , you met the requirements of this AD. (g) Alternative Methods of Compliance (AMOCs) The Manager, Eng in e Certification Offic e, FAA , may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may emai l your request to: ANE

- AD-AMOC @ faa.gov. (h) Related Information (1) For more in formation about this AD , contact Philip Haberlen , Aerospace Engineer , Engine Certification Office , FAA , Engine & 

### Propeller Directorate , 12 New En g land Ex e cutive Park , Burlington , MA 01803 ; phon e : 781-238-7770 ; fax: 781-238- 7199; email: phi1ip.haberlen @ faa.gov. (2) Refer to MCAJ European Aviation Safety Agency AD 2015-0049 , dated March 17 , 2015 (Corrected May 7 , 20 15) , for more infom1ation. You may exam in e the MCAI in the AD docket on th e Internet at http: //www .r egu lations.gov /#!documentDetai l ;D = FAA

- 20 I 

### 5-0900-0002. (i) Material Incorporated by 

### Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information li sted in th is paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.(2) You must use this serv i ce inf ormation as applicab le to do the actions required by this AD , unless the AD specifies otherwise. (i) Turbomeca S.A. MSB No
. 319 79 4834 , Version B , dated October 21 , 2014. 7( ii ) Reserved

. (3) For serv ice inf ormatio n ident i fied in thi s pro p osed AD , contact Turbomeca , S.A. , 40220 T amas , France; phone: 33 (0)5 59 7 4 40 00 ; t e lex: 570 042 ; fax: 33 (0)5 59 74 45 15. ( 4) You may v iew this service information at the FAA , E ng in e & Propeller Dir ecto rate , 12 New England E xecutive Park , Bu rlin g t on , MA. Fo r in fom1ation on the
ava il ab ility of this material at the FAA , call 781-2 38- 71 25. (5) Yo u m ay view t hi s serv ice i nforma ti on a t th e National Archives and Rec ord s Admin istra tion (NARA). For information on th e ava il abi lity of thi s material at NARA , ca ll 202-74 1-6030 , or go to: http: //www . arch ivcs.gov/ federal-register / cfr / i b rlocation s .html.

Iss ued in Burlin g ton , Massachusetts , o n A ug u s t 17. 20 1 5.



# ~\l **Gf~y** Di a ne S. Romano s ky , Acti ng Dir ec t o r ate Manager, Engine & Prope ll er Dir ecto ra t e , Ai r c raft Certifi cat i o n Service.



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