### DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2014-0561; Directorate Identifier 2014-NE-12-AD] RIN 2120-AA64 Ainvorthiness Directives; Roll s -Royce pic Turbofan Engines AGENCY: Federal Aviatio n Admini stratio n (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certai n Ro ll sRoyce plc (RR) RB211 Trent 768-60 , 772-60 , and 7728-60 turbofan engines. This proposed AD was prompted by fractures of the high-pressure/intermediate-pressure (HP/TP) turbin e s upp ort internal oil teed tube. Thi s proposed AD would require in s pection of the oil feed tube sea lin g sleeve and removal of tho se oil feed tube sealing sleeves that fail inspection. We are proposing this AD to prevent fa ilur e of the HP /IP t urbin e support int e rn al oi l feed tube , which could re s ult in uncontained engine failure and d amage to the airplane. DATES: We must receive comments on this proposed AD by [INS ERT DATE 60 DAYS AFTER DATE OF PUBLICATION TN THE FEDERAL REGIST E R]. ADDRESSES: You may se nd comments by any of the followi ng method s: • Federal eRul emakin g Portal: Go to http://www.regulations.gov. Fo llow the in s tructions for s ubmi tting comments. • Mail: Docket Management Facility , U.S. Department ofTransportation, 1200 New J e rsey Avenue SE., West Bui ldin g Ground Floor, Room Wl2-140 , Was hin gton, DC 20590-000 1.• Hand De li very: D e li ver to Mail address above b etween 9 a.m. and 5 p.m. , Monday throu g h Friday, excep t Federal holidays

. • Fax: 202-493

- 22 51. Examinin g the AD Docket You may examine th e AD docket o n the Internet at http: //www.regu lations.go v b y searching for and locating D ocket No. FAA-20 14-0561 ; or in perso n a t the Docket Operation s office between 9 a.m. and 5 p.m. , Monday th rough Friday, excep t Federa l holidays. The AD docket contain s th is p roposed A D , the m andato ry co ntinuin g
a irworth iness inf o rmation (MCAI) , the regu latory evaluat ion , any comments rec e ived, and other i nformation. The address fo r the D ocke t O ffice (p hon e: 800-647

- 5527 ) is in th e A DDR ESSES sect ion. Comments wi ll be avail able in the AD docket s hortl y after r eceipt. 

### FOR FURTHER INFORMATION CO NT AC T: W ego Wang , A e rospace En g in ee r, Eng ine Ce rtification Office, FAA , En gi ne & Propeller Dir ecto rate , 12 New En g land Execut ive Park , Bu rli ngton, MA 0 1803 ; phone: 781-238-7134 ; fax: 78 1 -238

- 7199 ; ema il : wego.wang @ faa.gov. 

### SUPPLEMENTARY INFORMATION : Comments Invited W e invite you to se nd any writte n re le vant data , v iews, o r arg um e n t s about thi s proposed AD. Send your comments to an a ddress listed under the ADDRESSES sect ion. Include " D ocket No
. FAA-2 0 14-0561 ; Dir ecto rate Iden tifier 20 14-NE-12

- A D " at the beginning o f y our comments. We specifically in v ite comments on the overall regul a t ory,
eco nomi c, envi r o nmen tal, and energy aspec ts of this propo sed AD. We will consider a ll
comment s rece ived by the closin g date and may ame nd thi s propo se d A D based on tho se comments. We will post all comments we rec eive , without change , to http: //www. regu la tion s.gov, including any personal infom1ation you prov id e . We will 2also post a report summarizi ng each substantive verbal contact with FAA personnel conceming this proposed AD. 

### Discussion The European Aviation Safety Agency (EASA) , which is the Technical Agen t for the Member States of the European Community , has issued EASA AD 20 I 4-0 I 68, dated July 16, 2014 (referred to hereinafter as " the M CA I ") , to correct an unsafe condition for the spec ifi ed products. The MCAI states: There hav e been nine occurrences of high o il consumption , caused by fracture of the High/Intermediate Pr essu r e (H P / IP) turbine support internal oil feed tube Part Numbe r (PIN) FW45909. The oil feed tube threaded end adaptor and sealing sleeve PIN FW15003 are designed to form a sl idin g joint which, if restra ined , can compress the oil feed tube during thermal contraction of the turb in e casing at the end of th e flight cycle. On each subsequent flight , the thermal growth and contraction of the turbine casi ng relative to the oil tube , during the heating and cooling phases of the flight cycle , apply a l oad cycle to the tube , which may lead to low cyc le fatigue fracture. This AD requires removal of certain HP/ lP turbine support internal oil feed tube
sea lin g s leeves to prevent oil ex h aust ion that could result in uncontained engine failure and damage to the airplane

. You may obtai n further information by examin in g the MCAI in the AD docket on the lntemet at http: //www.regulations

. gov by searching for and locating Docket No. 

### f AA-20 14-0561. 

### FAA 's D et e rminati on and Requirements of Thi s P r o p osed AD This product has been approved by the aviation authority of the United Kingdom. and is approved

. for operation in the United State s . Pursuant to our bilateral agreement with the European Community, EASA has notified us of the unsafe condition described


### 3in the MCAI. We are proposing this AD because we evaluated all information provid ed by EASA and determined th e u n safe condition exists and is li kely to exist or develop on other product s of the same type design. This proposed AD would req uire a one - time o nw ing or in- s hop inspection of the affected eng ines and re moval from serv ice of all affected 

### PIN FW 15003 o i l feed tube sealing sleeves. 

### C o s t s o f Co m p li a n ce We est imate that this proposed AD affects 69 engines install ed on airplanes of U.S. registry. W e a lso estimate that it would take about 8.5 hours per e ng ine to comply with this proposed AD. The average labor rate is $85 per hour. Based o n thes e figures.
we estimate the cost of this proposed AD on U.S. operators to be $49,853. A uthori ty for T hi s R ul e makin g Title 49 of the United States Code s pecifies the FAA 's author ity to issue rules on aviat ion safety. Subtitle I , section 106 , desc ribes the authority of the FAA Administrator.

" Subtitle VII: Aviation Programs ," describes in more detail the scope ofthe Agency 's authority. We are i ssu ing this rulemakin g under th e authority d escr ib e d in " Subtitle VII. Part A , Subpart III , Sect ion 4470 I : General requ irements. " Under that section, Congress char ges the F !\!\ with promot ing safe flight of civi l aircraft in ai r commerc e by prescribing regu lations for practice s, methods , and procedures th e Adm ini s trator finds necessary for safe ty in ai r commerce. Thi s 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. Re g ulato1 1' Find i n gs We determined that this propo sed AD would not have federalism implications under Executive Order 13132. This proposed A D wou ld not have a subs tantial direct effect on the States, on the relation ship between the nationa l Government and the S tates, 4or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above , I certify this proposed regulation: (I) Is not a "significant regulatory action " under E xecutive Order I2866, (2) I s not a " significant rule " under the DOT Regulatory Policies and Procedures (44 FR I I 034 , February 26, 1979), 

### (3) Will not affect intrastate aviation in A laska to the ex tent that it justifies making a regulatory distinction, and (4) Will not have 

### a s ignificant economic impact , positive or nega ti ve, on a substantial number of sma ll entities under the criteria of the Regulatory Flexibility Act. 

### Li s t of S ubjects in 14 CFR Part 39 Air transpo r tation , Aircraft , Aviation safety , Incorporation by reference , Safety . 

### The Proposed Amendment Acco rdin gly, under the authority delegated to me by the Administrator, the FAA proposes to amend I4 CFR part 39 as follows: 

### PA RT 

### 39

- AIRWORTHINESS DIRE CT IVE S I. The authority citation for part 39 continues to read as follows : Authority: 49 U.S.C. I06(g), 40113,44701. 

### § 39.13 !Am e nded] 2. The FAA amends§ 39.13 by adding the following new airworthiness directive (AD): 

### Roll s -Ro yce pic : Docket No . FAA-20 I4-0561 ; Directorate Identifier 20 14-NE-12-AD. 

### (a) Com m e nts Due Date We must receive comments by [INSERT DATE 60 DAYS AFT ER DATE OF PUBUCATTON TN THE FEDERAL REG I STER].

5(b) A ffected A Ds None. 

### (c) App li cab ili ty This AD applies to Ro lls -Royce pic (RR) RB2 1 I Trent 768

- 60, 772

- 60 , and 7728-60 turbofa n e n gi n es serial num ber s 4 1 693-42309 in clus ive, 423 1 3, 42318, 42319 , 42320 , 42328, a nd 4233 0 w ith hi g h- p ressu r e/inte rm e di a te- p ressu r e (I

-IP / IP ) t u rbin e
s upp o rt inte rn a l oi l fee d tube sealin g s lee v e p a rt numb e r ( P / N ) F WI 5 00 3 inst a ll e d th a t is
m a rked w ith th e pr e fi x " B IN" follo we d b y a s i x di g it b atc h numb e r , and do e s n o t co nt a in th e m a rki ng 102013, 11 2 013 o r 1020 1 3L. ( d ) Reaso n This A D was pro mp te d by f ractures of the HP / IP turbine support interna l oil feed tu be. We are issuing thi s AD to p revent fa i lu re of the H PII P tu rbine su p port i nternal oil fee d tube , which could resu lt i n u n co nta in ed e n gine failure and damage to the airp lane. (c) Ac ti o ns a nd Co mpli a n ce Com pl y w i th th is A D w i thi n the comp li ance t imes spec i fied, unless a lready done. ( I ) W i th i n 6 mon t hs after the effect ive date of thi s AD, perfo rm o n - wi n g o r in

s h op in s p ec tio n for , a nd remove from se rvi ce, a n y affec te d H P/ JP turb i n e supp o rt in te rn a l oi l feed tu be se alin g s lee v e . (2) R e m ove f r o m serv ic e a n y HP / IP turb in e s u ppo r t in ternal o il fee d tub e seali n g sleeve o n w hi ch m ark in gs c ann ot be suffic iently ident i fied to determ ine whe th er sa id sealing sleeve is part of the affected popu lat ion. (3) Fro m the effecti ve d ate of this AD , you may install on eng ines HP/J P turbine support interna l oil feed tube sealing sleeves , P IN FW 15003 , that are marked with th e prefix " BIN" fo ll owed b y a six digit batch number , prov ided that the part is mar ked with 1 02013 , 1 1 2013 or 102013L.



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### (f) Alternative Methods of Compliance (AMOCs) The Manag e r, E ngine Certification Offic e, r AA, may approve AMOCs to thi s AD. Use the procedur es found in 14 C rR 39. 19 to make yo ur request. (g) 

### Related Information ( I ) For more info rmati on

**abo u~**  this AD , co nt act W ego Wan g, Aerospace E ngi ne er, E n g ine Certi fi catio n Office , FAA , Engi ne & Pr ope ll er Dir ectorate , 12 New Eng land Exec utive Pa rk , Burlingto n , MA 0180 3; phone: 781 -23 8-7134 ; f ax : 781- 238- 7199; e m a iI: wego. wang @ faa. gov. (2) Refer to M CA I European Av iation Safety Agency AD 2014-0 16 8 , dated July 16 ,2014 , for more inf ormation. You may exam ine the MCA I in the AD docket o n th e Interne t at http: //www. regu lati ons.gov by search in g for and locati ng it in Docket No. FAA -20 14-0561.

I ss ue d i n Burlington , Massachusetts, on September 9 , 20 14

.

Acting Assistant Dir ec torate Man age r, E ngin e & Prope ll e r Directorate, Aircraft Ce rtification Service.



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