### DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2012-1334; Directorate Identifier 2012-NE-49-AD; Amendment 

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### AD 2013-XX-*X] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce plc Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT . ACTION: Final rule; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-Trent 970-84, 970B-84, 972-84, 972B-84, 977-84, 977B-84, and 980-84 turbofan engines. This AD requires replacement of the fuel oil heat exchanger (FOHE). This AD was prompted by a report of an in-flight increase ofN2 intermediate pressure rotor vibrations resulting in an engine surge and pilot shut down of the engine. We are issuing this AD to prevent rotor bearing oil starvation, uncontained engine failure, and damage to the airplane. DATES: This AD becomes effective [INSERT DATE OF PUBLICATION IN THE FEDERAL REGISTER]. We must receive comments on this AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER] ADDRESSES: You may send comments by any ofthe following methods: DATE Ill 0113**ITI ALS** **~~ /**  R

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### b{,{ DATE 1 /7/ 13

### Re: ACTION BY: 1/14/13- 2012-NE-49-AD- Rolls-Royce pic RB211-Trent Turbofan Engines FOHE Replacement. NFR -Version 3.1 

### ijj)

Legal concurs . Regards, 

# v Vincent Bennett
. AN E-007 , Office of Reg io na l Co unse l to: Bnan Warner C Alan Rowe, James E Gray, John Golinski , Paul Donato , Robert

c. Green

Brian Warner V i nce , Pl e a s e review and provide com m ent I co ... From: To : Brian Warner/ANE/FAA ANE-11 0, Standards Staff Vincent Bennett!ANE/FAA@FAA , 01/10/201311 : 10AM

011 1 0120 13 0 8:31 : 13 AM

Cc: Alan Rowe/ANE/FAA, James E Gray/ANE/FAA@FAA, John Golinski/ANE/FAA, Paul Donato/ANE/FAA@FAA, Robert Green/ANE/FAA@FAA Date: 01/10/2013 08:31AM Subject: Re: ACTION BY: 1/14/13- 2012-NE-49-AD- Rolls-Royce pic RB211-Trent Turbofan Engines FOHE Replacement. NFR- Version 3.1 Vince , Please review and provide comment 

### I concurrence .

12ne49i.doc Thanks
. . . Brian 

### Brian M. Warner Federal Aviation Administration Engine and Propeller Directorate Standards Staff, ANE-11 0 Technical Writer 

### I Editor 12 New England Executive Park Burlington, MA 01803 781-238-7169 brian. warner@faa
. gov Click here to send us your feedback : http://www
.faa.gov/about/office erg/headquarters offices/avs/stakeholder feedback/air/field/ Vincent Bennett With comments . R , Vin c e , P lea se re vi ew a nd provi d e co m ment I co . . . 01 10 9120 1 3 04 :45:42 P M 01 108 120 13 08:32:44 AM

### Re: ACTION BY: 1/10/13- 2012-NE-49-AD- Rolls-Royce pic RB211-Trent Turbofan Engines FOHE Replacement. NFR -Version 2.1 

# Qil Tara Fitzge rald
. ANE-111 , Rulema kin g and Poli cy to : Bnan Warner 01/04/201308:41 AM Cc Alan Rowe , James E Gray , John Golinski , Paul Donato, Robert · Green , Roger H Love I concur. Tara Fitzgerald Federal Aviation Administration Engine 

### & Propeller Directorate Rulemaking and Policy, ANE-111 12 New England Executive Park Burlington, MA 01803 781-238-7130
From : All : Brian Warner/ANE/FAA ANE-111 , Rulemaking and Policy 01/04/2013 07 : 58:36 

# AM
To: Cc: Robert Green/ANE/FAA@FAA , Roger H Love/ANE/FAA@FAA, Tara Fitzgerald/ANE/FAA@FAA , Alan Rowe/ANE/FAA@FAA , James E Gray/ANE/FAA@FAA, John Golinski/ANE/FAA@FAA , Paul Donato/ANE/FAA@FAA Date: S ubject:

All : 01/04/2013 07:58AM Re : ACTION BY : 1/10/13- 2012-NE-49-AD- Rolls-Royce pic RB211-Trent Turbofan Engines FOHE Replacement. NFR- Version 2
. 1

An additional paragraph has been added; see yellow highlight. Please review and provide comment 

### I concurrence . Thanks
.. . Brian
Brian M
. Warner , Technical Writer/Editor Federal Aviation Administration, Engine 

### & Propeller Directorate , ANE-110 Aircraft Certification Service 12 New England Executive Park Burlington , MA 01803 Office : (781) 238-7169 Fax : (781) 238-7199 We value your feedback. The AVS Customer Feedback Form is at: http://www.faa. gov /a bout!office_ o rg/headq u a rters_offices/avs/sta keholder

_feed back/air/field/

--- - -Brian Warner/AN E/FAA wrote: -----

### Re: ACTION BY: 1/10113- 2012-NE-49-AD- Rolls-Royce pic RB211-Trent 900 Turbofan Engines FOHE Replacement. NFR -Version 2.1 [) Roger H Love
. AE A- BOS-AEG-67 , Bu rl i ngton , MA to : Bnan Warner 01/07/2013 01 :43PM Brian , 

### I concur with version 2
. 1. Roger 

### H
. Love Propulsion Specialist Boston Aircraft Evaluation Group (AEA-BOS-AEG-67) 781-238-7891 , fax 7898 We value your comments, please fill out the form using the following link : http ://www
.faa.gov/abouUoffice_org/headquarters_offices/avs/stakeholder

_feedbacklafs/field/sf_aeg/
Brian Warner Rog e r, P l ease rev i ew and prov i de commen t I co ... From: To: Date: Brian Warner/ANE/FAA ANE-11 0 , Standards Staff Roger H Love/ANE/FAA@FAA 01/07/2013 09 : 14AM 01/07/2013 09 :14 :5 2 AM

S ubject: Re: ACTION BY: 1/10/13- 2012-NE-49-AD- Rolls-Royce pic RB211-Trent Turbofan Engines FOHE Replacement. NFR -Version 2
. 1 Roger, Please review and provide comment 

### I concurrence . [attachment "12ne49i.doc" deleted by Roger H Love/ANE/FAA] Thanks
.. . Brian


### Brian M
. Warner Federal Aviation Administration Engine and Propeller Directorate Standards Staff, ANE-110 Technical Writer I Editor 12 New England Executive Park Burlington , MA 01803 781-238-7169 b ri an .warner@faa.gov Click here to send us your feedback : http://www
.faa
. gov/about/office erg/headquarters offices/avs/stakeholder feedback/a i r/f ield/