[4910-13-PJ DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. F AA-2012-1198; Directorate Identifier 2012-NE-35-AD ; Amendment 39-17289; AD 2012-25-08] RIN 2120-AA64 Ainvorthiness Directives; Rolls-Royc e pic Turbofan Engines AGENCY: Federal Aviation Administration (FAA) , DOT. ACTION: Final rule ; request for comments. SUMMARY: We are adopting a new a irworthine ss directive (AD) for certain serial numbers (SINs) of Rolls-Royce pic (RR) RB211- Trent 768-60 , 772

- 60, and 7728-60 turbo fan engines. This AD requires ini tial and re petitive on-w in g o r in- s hop inspection s of the high pressure/ intermed iate pres s ure (HP / IP ) turbine bearing sup port oil feed tube outer heat shie ld . T hi s AD also requires installation of a revised HP/ IP turbine bearing support structure as te rminating action t o th e repetitive inspections of th e HP/ IP turbine bearing support oi I feed tube outer heat shi e ld. This AD was pro mpted by a report of high oil consumption du e to an oil leak from the HP/ IP turbine bearing s upp o rt oil feed tube. We are is s uing thi s AD to prevent failure of the HP turbine disc , uncontained engine failure, and damag e to the airplane. DATES: This AD becomes effective [In se rt date 15 days after date of pub lication in th e FEDERAL REGISTER].We mu st receive comments on thi s AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. The Director of the Federal Register approved the incorporation by reference of a certain publication as of [INSERT DATE 15 DAYS AFTER DATE OF PUBLICATION IN THE FED ERAL REGISTER]. The Director of the Federal R egister approved the incorporation by reference of certain other publications as of December 14 , 2007. 

### AD DRESSES: You may se nd comments by any of the following methods:

• F ederal eRulemaking Portal: Go to http: //www.regulations.gov and follow the instruction s for se ndin g your comments e lectron ically.

• Mail: U.S. Department of Transportation, 1200 New Jerse y Avenue SE. , West Building Ground Floor, Room W12-140 , Washington, DC 20590-0001.

• Hand Delivery: Deli ver to Mail address above between 9 a .m. and 5 p.m. , Monday through Friday, except Federal holidays.

• Fax: 202-493-2251. For se rvic e information identifi ed in this AD, contact Roll s- Royce plc, Corporate Communications , P.O. Box 31, D erb y , Eng land, DE248BJ, phone: 011-44-1332- 242424; fax: 0 11 -44- 13 32-245418 , oremail:http: //www.rollsroyce.com/contact/civil

_team.jsp. You may view this service information at the FAA, Engine 

### & Prop e ll e r Directorate , 12 New England Executive Park , Burlington, MA 01803. For information on the availability ofthi s material at the FAA, call 781-238-7125.

2Examinin g the AD Docket You may examine the AD docket on the Internet at http ://www.regulations.gov ;
or in person at the Docket Operations office between 9 a
. m. and 5 p.m. , Monday throu gh Friday, except Federal holidays. The AD docket contains thi s AD, the regu latory
evalu ation, any comme nts received , and other information. The street address for the Docket Operations office (phone: 800-647-5527) is the same as the Mail address provided in the ADDRESSES section. Com me nt s will be avai l ab le in the AD docket shortly after receipt. F OR FURTHER INFORMAT IO N CONTACT: Rob ert Morlath , Aerospace Engineer , Engine Certification Office , FAA, Engine 

### & Prope ll er Directo rate, 12 New Eng land Exec utive Park , Burlington, MA 01803; phone: 78 1-238 7154; fax: 781-238 7199; ema il : robert.c.morlath @ faa.gov. SUPPLEMENTARY INFORMATIO N: Discussion The European Aviation Safety Agency (EASA), which is the Tec hnical Agent for th e Memb e r States of the European Com munit y, has issued EASA AD 2012

- 0201, dated September 26 , 2012 ( referred to after this as " th e MCAr'), to correct an unsafe condition for the spec i fied products. Th e MCAI states: In August 2011, a Trent 700 engine was removed for high o il co n sumption, which was found to have been caused by a small hole in th e oil feed tube of the High Pressure 

### I Inte rmediate Pressure (HP/IP) Bearing Suppo rt. The hole was the resu lt of frettage (c hafin g) with a fractured outer heat shi e ld
. This is a known problem and recognized unsafe condition that has reemerged having been previously addressed by EASA AD 2007- 0260Rl. 

### 3Investigation by RR revealed a build error that, in contradiction to the build records , the previous configuration of outer heat shield (Pre-Service Bu ll etin (SB) 72-F117 standard) was fitted on the o il feed tube service pipe of the HP/ I P structure . As the build error may have been reproduced several times , it is assumed that further post-SB 72

- Fll7 standard structures may be in service with preSS 72-F 1 17 outer heat s hields fitted to the oil feed tube. The frettage on the oil feed tube within the HP/ IP turbine bearings support structure results from contact with the fracture edges of the tubes outermost heat shield, which has been found to fracture under thermal cycling and then to chafe against the oil tube with the potential to cause ho les and consequent o il leak s . You may obtain further information by examining the MCAI in the AD docket. On Novembe r 20, 2007, we issued AD 2007-24-09 (72 FR 67568, November 29 , 2007) which cor responds with EASA AD 2007-0260R1. Our AD has a mandatory te rminating action date of May 31, 20 I 0, however, there were, and currently are, no U.S. operators of the engines affected by tho se ADs. Those ADs are only applicab le to engines that do not incorporate Modification Standard 72-F117. Since those A D s we re issu ed, EASA ha s i ssued AD 20 1 2-0201 that is applicable to a spec i fic set of e ng ines that may have had Modification Standard 72-F117 incorporated incorrectly. EASA did not supersede EASA AD 2007-0260R1 with EASA AD 2012-020 1 because EASA AD 20 12- 0201 only affects a very specific population of e ngines that, havin g incorporated Modification Standard 72-F117 , e ither correctly or incorrectly , are no longer affected by EASA AD 2007-0260Rl. We are issuing our AD as a standalone document for the same
reasons. This n ew AD a l so is app licable only to the engines specified in the MCAI, non e of wh ich are currently registered t o U.S. operators. A l so, this new AD lists certain service bulletins that were previously incorporated by reference in AD 2007-24 -09.

4

### Re leva nt Serv ice Inf o rm a tion RR ha s issued A lert Service Bulletin No. RB.211

- 72-AG873 , date d February 27 , 20 12
. The actions described in this se rv ice information are intended to correct the unsafe condition ide ntifi ed in the MCAI. 

### FAA's De t e rmin a ti on a nd R eq uire me nt s of thi s AD Thi s product has been approved by the United Kingdom and is approved for operation in t he United States. P u rsuant to our bilatera l agreement w i th the European Community , EASA has notified us of the un safe condition described in the MCAI and service information refere nced above. We are issuing this AD be cause we evaluated all infom1ation provided by EASA and determined th e unsafe condition ex is ts and is likel y t o ex i st or dev e lop on other products of the same type design
. 

### FAA's Determin a tion of t he Ef fective D ate No dome s t ic operators use an y of the RB211-Trent 768-60 , 772-60, and 7728-60 turbofan engines li sted by SIN in this AD. Therefore , we find th at not ice and opportunity for prior public comment are unneces sary and that good cause exists for making this amendment efTective in less than 30 days
. 

### C omm ents In vited Thi s A D i s a final rule that involves requirements affecting flight safet y, and we did not precede it by notice and opportunity for public comment. We in v ite you to send any written relevant data , views, or arguments about this AD. Send your comme nts to an address listed under the ADDRESSES sec tion. Include "Docket No. FAA-20 12-1198 ; Directorate Identifier 20 12-NE-35-AD " at the beginning of yo ur comments. We specifica ll y in v ite comments on the overall regulatory, economic , e nvironme ntal , and 5energy aspects o f thi s AD. We will co n sider all co mments re ce ive d by the closing date and may amend thi s AD because of tho se comments. We will po s t all comments we r eceiv e, without change , to http :/ / www. regu lation s.gov, includin g an y personal information yo u provide. We w ill

a lso p ost a report s ummarizing eac h s ub stanti ve ve rbal contact w i th fAA perso nn e l conceming thi s AD. Us ing the search function of the Web s ite , a nyo ne can find and r ead the comment s in any of our docket s, inc luding , if prov ided , the name of the in div i d ual who sent th e co mm e nt (o r s igne d th e comment on behalf of an assoc iati on , business , labor uni o n , etc.). Y ou may review the D OT's complete Pri vacy Act S tate me nt in the Federa l R egister published on Apri l II , 2000 (65 FR 1 94 77-78). A uthority fo r T hi s Rul ema kin g Titl e 49 of the United States Code s pec ifies the FAA's authority to issue rule s on
a viati on safety. Sub titl e 

### I , sect ion 1 06 , describes the authority of th e FAA Administrator.

" Subt itl e VII: Av iati on Program s ," describes in more de tai l the scope of the Agency ' s authority. We are iss uin g this rul e makin g und e r th e authority describ e d in "S ubtitle VII , Part A , Subpart III , Sec tion 44701: General requirements." Under that sec tion , Congress charges the F AA w ith promotin g safe fli ght of civ il a ircraft in ai r commerce by prescribin g regulations fo r practices , methods , and procedur es th e Administrator find s necessary for saf e ty i n a ir commerc e. Th is re g ulation is with in th e scope of th at authority becau se it addresses an unsafe condition th at is likely to exist or develop on products identified in th is rulemaking action.



### 6Regulatory Findings We determined that this AD will not have federa lism impli cation s under Executive Order 13132. This AD will not have a substantia l direct effec t 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 : I. I s not a " s ignificant reg ul atory action " u nd er Exec utive Order I2866; 2
. Is not a " significant rule " und er the DOT Regulatory Policies and Procedures (44 FR 1 1 034 , February 26 , 1 979); and 3. Will not have a significant econom ic impac t, positive or negative, o n a substantial numb e r of s mall entities under the c riteria of the R eg ul ato r y Flexib ili ty Act. We prepared a regulatory evaluation of the estimated costs to comp ly with thi s AD and place d it in the AD docket. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviat ion safety, Incorporation by reference, Safety. Adoption of th e Amendment According ly, under the authority delegated to me by the Admin istrator, the FAA amends 14 CFR part 39 as follows: PART 39 -AIRWORTHIN ESS DIRECTIVES I. The authority cita t ion for part 39 cont inu es to read as fo ll ows: Authority: 49 U.S.C. 1 06(g) , 401 I 3 , 44701. 

### § 39.13 [Amend e d) 2. T he FAA amends§ 39.13 by adding th e following new AD: 

### 72012-25-08 

### Rolls-Royce pic: Amendment 39 -17289; Docket No. 

### F AA-20 12-1198 ; Directorat e Id e ntifier 2012-NE-35-AD. 

### (a) Effective Date This a irwo rthiness directi ve (AD) becomes effective (lnsert date 15 days after date of publication in the FEDERAL REG ISTER]. 

### (b) Affected ADs None. 

### (c) Applicability This AD applies to Rolls-Ro yce pic (RR) RB211 Trent 768-60 , 772-60 , and 772B-60 turb ofan e ngi nes with serial numbers (SINs) listed in Table l to paragraph (c) of this AD. 

### Tab le 1 to Paragrap h (c)- Affected Engine S/Ns 41221 41435 41446 41459 4 14 65 41425 41437 41451 41460 414 66 41428 41438 41452 41461 41468 41430 41440 41454 41462 41469 41431 41442 41455 41463 4 1470 41432 41445 41456 41464 41471 

### (d) Reason This AD was prompted by a report o f hi gh oil consumption due to an oil leak from the hi g h pressure/intermediate pre ss ure (HP/IP) turbine bearin g s upport oil feed tube. We are iss uin g this AD to preve nt a failure of the 

### HP turbin e di sc , uncontained engine failure , and damage to the airplane.



### 8(e) Actions and Co mpliance Unless already done, do the following actions. (t) Initia l Inspection (l) Initially inspect the HP/ lP turbin e bearing support oil feed tube within the compliance t imes speci fied in paragraphs J .D.( 1 )(a) throu gh 1.0.( 1 )(a)(ii) of RR A lert Ser v ice Bull eti n (AS B) No
. RB.211-72-AG873 , dated February 27 , 2012. Perform the initial inspection in accordance w ith parag raphs 3.A (l)(a) throu gh 3.A (l)G) ofRR ASB No. RB.211-72-AG873, dated February 27 , 20 12. (2) If the HP/ IP turbine bearing support oil feed tube outer he at shield is not present, accept the module as compliant. No fu rther action is requ ired. (g) Repetitive Inspections If the HP/ IP turbine bearing s upport oi l feed tube outer heat s hi eld is present, perform r epe titiv e i n spec tions of the HP/ I P turbine bearing suppo1 1 o il feed tube, in accordance with paragraphs 3.A (2)(b) through 3.A (2)(f) ofRR AS8 No
. RB.211-7 2

- AG873, dated F e bruary 27, 2012
. (h) Mandatory Terminating Action As mand atory terminati ng action to the repetitive in sp ect ion s required by this AD , install a r ev i se d HP/ IP turbine bearing support structure , at the next 05 Module overhaul after the effective date of this AD, in acco rdance with e ith er : (1) Section s 3.8 ( l )(a) throug h 3.8 ( l )(t) ofRR Service Bulletin (SB) No. RB.211-72-Fl17 , Revision 2, dated September 25 , 2006; or (2) Sec tions 3.8 (l )(a) through 3.8 (l)(e) and 3.8 (2)(a) ofRR S 8 No. RB.211- 72-F227, Rev ision I , dated October 8 , 2007. 

### 9(i) Definition For the purpose of this AD , " n ex t 05 Module overhaul" is any time that th e HP/ IP turbine intern a l oi l tub es have be en exposed and the HP/ IP turbi ne bearing s upport oil feed tube heat s hi e lds are subject ed to v is ual inspection. 

### (j) Alternative Methods of Compliance (AMOCs) The Manager , Engine Certification Office, may approve AMOCs for t his AD
. Use the procedure s found in 14 CFR 39. 19 to make your reque s t. (k) Related Information 

### (I) For more i n format ion abo ut this A D , contact Robert Mo rl ath, Aerospace E ngineer , Engine Certification Offic e, FAA , Eng i ne & Propeller Directorate, 12 New Eng lan d Exec uti ve Park , Burlington , MA 01803; phone: 781- 238 7154; fax: 781-238 7199 ; email: robe rt.c .morlath @ faa.gov. (2) Refe r to European Aviati o n Safety Agency AD 2012-020 1 , dated Septemb e r 26, 2012, for relat ed information. (I) Material Incorporated by Reference (1) You must u se th e following serv ic e information to do the action s r e quired by this 

### AD , un less the A D spec ifi es otherwise
. The Di rector of the Federal Re g i ster

approved the in corporatio n by refe r ence ( IBR) of the foll o wi ng serv ice inf orma tion under 5 U.S.C. 552(a) and 1 CFR part 5 1 on the date speci fi ed: ( i) Roll s- Royc e pic Alert Service Bull e tin No. RB.211-72 -AG873, dated February 27 , 2012 , app roved for IBR [INSERT DATE 15 DAY S AFTER PUBLICATION].

1 0(ii) Rolls-Royce plc Service Bulletin No. RB.211-72-Fll7 , Revision 2, dated September 25 , 2006, approved for IBR on Dece mber 14, 2007 (72 F R 67568, November 29 , 2007). (iii) Rolls-Royce plc Service Bulletin No. RB.211-72-F227 , Revision 1 , dated October 8 , 2007 , approved for IBR on December 14 , 2007 (72 FR 67568 , November 29 , 2007). (2) For service information i dentified in this AD , contact Rolls-Royce plc , Corporate Commu ni cat ions, P .O
. Box 3 1 , Derby , England , DE248BJ , phone: 011-44- 1332-242424 ; fax: 0 11-44-1332- 24 5418 ; or email : http: //www. ro ll s royce.com/contact/civil_te am.jsp. (3) You may view this service in fo rm ation at the FAA, Engine 

### & Propell er Directorate, 12 New Eng land Ex ecutive Park , Burlington, MA. For information on the availability of thi s material at the FAA , call 78 1 -238-7125. (4) You may v iew this service information at the National Archives and Record s Administration (NARA). For information on the availability of thi s material at NARA , call 202-741-6030 , o r go to: http :// www.a rchives.gov/(ederal- reg isterlcfi-librlocations. him/. I ss ued in Burlington , Ma ssac hu se tt s, on December 4 , 2012.

Co ll een M. D ' A lessandro, Assistant Manager , Eng in e & Propeller Directorate , Aircraft Certification Service.

II