DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

(Docket No. FAA-2012-1327; Directorate Identifier 2012-NE-47-AD] 

RIN 2120-AA64 

Airworthiness Directives; Rolls-Royce plc Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

Royce plc (RR) models RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. 

This proposed AD was prompted by low-pressure (LP) compressor blade partial airfoil 

release events. This proposed AD would require a one-time ultrasonic C-scan inspection 

of LP compressor blades that had accumulated more than 2,500 flight cycles since new. 

We are proposing this AD to prevent LP compressor blade airfoil separations, engine 

damage, and damage to the airplane. 

DATES: We must receive comments on this proposed AD by [INSERT DATE 60 

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. 

ADDRESSES: You may send comments by any of the following methods: 

• Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the 

instructions for sending your comments electronically. 

• Mail: Docket Management Facility, U.S. Department of Transportation, 1200 

New Jersey Avenue SE., West Building Ground Floor, Room W12-140, Washington, DC 

20590-0001. 

• Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal holidays. 

TIAL ~ \ 

Benn~~ 

DATE 

1114/13 

INITIALS/SIG 

RLove/B 

DATE 

1/3/13 

ROUTING SYMBOL 

NE-110 

OUTING SYMBOL 

NE-1oo 6or INITIALS/SIG 
Re: ACTION BY: 1/10/13- 2012-NE-47-AD- Rolls-Royce RB211 Trent 700 

Turbofan Engines LP Compressor Blades. NPRM - Ver 2.0 [j 

Tara Fitzgerald . ANE-11 1, Rulemaking and Policy to: Bnan Warner 01/03/2013 01 :07 PM 

Cc- Alan Rowe, James E Gray, John Golinski, Paul Donato, Robert 

· Green, Roger H Love 

Brian, 

I reviewed version 2.0 and 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 

Brian Warner From: Brian Warner/ANE/FAA ANE-11 1, Rulem ... 

From : Brian Warner/ANE/FAA 

ANE-111 , Rulemaking and Policy 

01 /03/2013 11:30:13AM 

To: 

Cc: 

Roger H Love/ANE/FAA@FAA, Tara Fitzgerald/ANE/FAA@FAA, Robert Green/ANE/FAA@FAA, 

John Golinski/ANE/FAA@FAA, James E Gray/ANE/FAA@FAA, Alan Rowe/ANE/FAA@FAA, Paul 

Donato/ AN E/F AA@F AA 

Date: 

Subject: 

All: 

01/03/2013 11:30 AM 

ACTION BY: 1/10/13- 2012-NE-47-AD- Rolls-Royce RB211 Trent 700 Turbofan Engines LP 

Compressor Blades. NPRM - Ver 2.0 

Please review and provide comment I concurrence. 

Thanks ... 

Brian 

Brian M. Warner, Technical Writer/Editor 

Federal Aviation Administration, 

Engine & Propeller Directorate, ANE-11 0 

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/about/office_org/headquarters_offices/avs/stakeholder_feedbacklair/field/ 
Re: ACTION BY: 1110/13- 2012-NE-47-AD- Rolls-Royce RB211 Trent 700 

Turbofan Engines LP Compressor Blades. NPRM - Ver 2.0 [J] 

Roger H Love . AEA-BOS-AEG-67, Burlington, MA to: Bnan Warner 01/03/2013 01:18PM 

Cc Alan Rowe, James E Gray, John Golinski, Paul Donato, Robert 

· Green, Tara Fitzgerald 

I concur with version 2.0. 

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/a bout/office_ org/headqua rters _ offices/avs/sta keholder _feed back/afs/field/sf_aeg/ 

Brian Warner All: 01 to3i2013 11 :30: 13AM 

From: Brian Warner/ANE/FAA 

To: 

Cc: 

Roger H Love/ANE/FAA@FAA, Tara Fitzgerald/ANE/FAA@FAA, Robert Green/ANE/FAA@FAA 

John Golinski/ANE/FAA@FAA, James E Gray/ANE/FAA@FAA, Alan Rowe/ANE/FAA@FAA, Paul 

Donato/ AN E/F AA@F AA 

Date: 

Subject: 

All: 

01/03/2013 11 :30 AM 

ACTION BY: 1110/13- 2012-NE-47-AD- Rolls-Royce RB211 Trent 700 Turbofan Engines LP 

Compressor Blades. NPRM - Ver 2.0 

Please review and provide comment I concurrence. 

Thanks ... 

Brian 

Brian M. Warner, Technical Writer/Editor 

Federal Aviation Administration, 

Engine & Propeller Directorate, ANE-11 0 

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/about/office_org/headquarters_offices/avs/stakeholder_feedbacklair/field/ 

-----Forwarded by Brian Warner/ANE/FAA on 01/03/2013 11 : 13AM -----
Re: ACTION BY: 1/11/13- 2012-NE-47-AD- Rolls-Royce RB211 Trent 700 

Turbofan Engines LP Compressor Blades. NPRM - Ver 3.0 DJj 

Vincent Bennett t R b rt G 01/14/2013 02 09 PM ANE-007, Office of Regional Counsel o: 0 e reen : 

Cc: Brian Warner 

History: This message has been forwarded. 

Concur when Instruction is replaced with information. 

R, 

v 

Robert Green One change (two places) and one correction (s ... 

From: 

To: 

Date: 

Robert Green/ANE/FAA 

ANE-142, Engine Certification Branch 142 

Brian Warner/ANE/FAA@FAA, Vincent Bennett/ANE/FAA@FAA, 

01/14/2013 01:51 PM 

01/14/2013 01 :51:42 PM 

Subject: Re: ACTION BY: 1/11/13- 2012-NE-47-AD- Rolls-Royce RB211 Trent 700 Turbofan Engines LP 

Compressor Blades. NPRM - Ver 3.0 

One change (two places) and one correction (see attached). 

12ne47n 14ja (with RG corrections).doc 

Note, I want to highlight the unsafe condition as a blade airfoil separation as opposed to a blade release, 

which is a far more significant event (to keep things in the proper perspective) 

Brian Warner 

Vincent Bennett 

Brian Warner 

Bob, I agree with all of Vince's changes. Please ... 

Minor nits. R, V 

Vince, 

. 01/14/201 312:44:46 PM 

.. 01/1412013 12:00:07PM 

01/04/2013 08:15:21 AM 
Page 1 of6 

From: Robert GreeniANEIFAA 

To: Brian WarneriANEIFAA@FAA 

Date: Wednesday, January 02, 2013 11: lOAM 

Subject: Re: ACTION BY: 119113 - 2012-NE-47-AD - Rolls-Royce RB211 Trent 700 Turbofan 

Engines LP Compressor Blades. NPRM - Ver 1.2 

I concur. 

Robert Green 

Engine Certification Branch, ANE-142 

FAA Engine Certification Office 

Ph: (781) 238-7754 

We va lu e _~:JO r reedback. 

The Aircra Ft Certif-ication Service (AIR) Stake holde r f eedback f orm is ava ilable at: 

http://www.faa.gov/about/office erg/headquarters offices/avs/stakeholder feedback/air/field/ 

"' Brian Warner---0110212013 10:53:43 AM---Bob, Please review and provide comme nt I 

concurrence. 

From: Brian WarneriANEIFAA 

ANE-110, Standards Staff 

To: Robert GreeniANEIFAA@FAA, 

Cc: Alan RoweiANEIFAA 

Date: 0110212013 10:53 AM 

Subject: Re: ACTION BY: 119113 - 2012-NE-47-AD - Rolls-Royce RB211 Trent 700 Turbofan 

Engines LP Compressor Blades. NPRM - Ver 1.2 

Bob, 

Please review and provide comment I concurrence. 

(See attached file: 12ne47n.doc) 

Thanks ... 

Brian 

Brian M. Warner 

Federal Aviation Administration 

Engine and Propeller Directorate 

Standards Staff, AN E-11 0 

https://anemailclsl .faa.gov/mailO/Brian Wamer.nsf/(%24Inbox)/031E719665A07ED585257... 113/2013