Version 3.4 ( 11 /30/ 12) 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2012-1167; Directorate Identifier 2012-NE-36-AD] 

RIN 2120-AA64 

Ainvorthincss Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking (NPRM). 

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Rolls 

Royce Deutschland Ltd & Co KG (RRD) models Tay 620- 15 and Tay 650-15 turbofan 

engines. This proposed AD was prompted by RRD recalculating the Declared Safe 

Cyclic Life (DSCL) tor certain low-pressure compressor (LPC) rotor disc assemblies 

operating to the Plan D Flight Mission. This proposed AD would require removing the 

INITIAl..vSIG IL \ rFilZgc f~ 

ATE 

10/3 1/ 12 

aftected LPC rotor disc assemblies at a new lower recalculated DSCL. We are proposing ll NosvM lO~ 

EG 

this AD to prevent failure of the LPC rotor disc assembly, uncontained engine failure, 

and damage to the a irplane. 

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, using the procedures found in 14 CFR 11.43 

and 11.45, by any of the following methods: 

instructions for sending your comments electronically. 

INITIALSISIG , 

RLOVI.: 

ATE 

10/311 12 
Re: ACTION BY: 11n112- 2012-NE-36-AD - Rolls Royce Deutschland (RRD) 

Ltd & Co KG Tay 620, 650-15 Turbofan Engines LPC Disc Assy Life Limitation 

- Implementation. NPRM - Version 2.0 .j 

Roger H Love 

AEA-BOS-AEG-67. Burlington, MA 

Frederick Zink, Tara Fitzgerald 

I concur with version 2.1. 

Brian Warner 10/31/2012 02:31 PM 

I was also going to mention not needing the previous TC holders location (Derby) in the AD. 

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/about/office_org/headquarters_offices/avs/stakeholder_feedbacklafslfield/sf_aeg/ 

Brian Warner Roger/Fred, Please take a look at the newly revi. .. 

From: 

To 

Cc: 

Brian Warner/ANE/FAA 

ANE-11 0, Standards Staff 

Roger H Love/ANE/FAA@FAA, Frederick Zink/ANE/FAA@FAA 

Tara Fitzgerald/ANEIFAA@FAA 

10/3112012 02:21 PM 

10/31 /2012 02:21 :48 PM 

Date 

Subject Re: ACTION BY: 11/7/1 2- 2012-NE-36-AD- Rolls Royce Deutschland (RRD) Ltd & Co KG Tay 

620, 650-15 Turbofan Engines LPC Disc Assy Life Limitation - Implementation. NPRM -Version 

2.0 

Roger/Fred, 

Please take a look at the newly revised 12ne36. I have Version 2 concurrence from Tara with caveat that 

SB number is correct. I know I have your concurrence also Fred, but this way you can see the latest 

change. There are two changes highlighted in yellow. Please review and provide 

comments/concurrence. 

(attachment "12ne36n.doc" deleted by Roger H Love/ANE/FAA] 

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 
• . Re: ACTION BY: 11n112- 2012-NE-36-AD- Rolls Royce Deutschland (RRD) 

Ltd & Co KG Tay 620, 650-15 Turbofan Engines LPC Disc Assy Life Limitation 

- Implementation. NPRM - Version 2.0 [3 

Tara Fitzgerald 

ANE-111. Rulemakmg and Policy Brian Warner 

Alan Rowe, Frederick Zink, James E Gray, John Golinski, Paul 

Donato, Roger H Love 

Brian, 

I reviewed version 2.0 and concur (date of SB being the right one per RL's email). 

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 Please review and provide comments/concurren ... 

F10m: Brian Warner/ANE/FAA 

ANE-110, Standards Staff 

10/31/2012 01:38PM 

10/31/2012 10:41:01 AM 

To: 

Cc: 

Roger H Love/ANE/FAA@FAA, Tara Fitzgerald/ANEIFAA@FAA, Frederick Zink/ANE/FAA@FAA 

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

Rowe/ANE/FAA 

Date· 

SubJect: 

10/31/2012 10:41 AM 

ACTION BY: 1117/12- 2012-NE-36-AD- Rolls Royce Deutschland (RRD) Ltd & Co KG Tay 620, 

650-15 Turbofan Engines LPC Disc Assy Life Limitation - Implementation. NPRM - Version 2.0 

Please review and provide comments/concurrence. 

[attachment "12ne36n.doc" deleted by Tara Fitzgerald/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 

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/ 
Re: ACTION BY: 12/6112- 2012-NE-36-AD- Rolls Royce Deutschland (RRD) 

Ltd & Co KG Tay 620, 650-15 Turbofan Engines LPC Disc Assy Life Limitation 

- Implementation. NPRM - Version 3.3 0 

Brian: 

Concur. 

Regards, 

v 

Vincent Bennett 1 B . W . . o nan arner ANE-007. Off1ce of Reg1onal Counsel 

~ John Golinski, Paul Donato, Alan Rowe, James E Gray, Frederick 

~< Zink 

Brian Warner Vince, Here is the subject AD with your commen ... 

From: Brian Warner/ANE/FAA 

ANE-110, Standards Staff 

Vincent BennetVANEIFAA@FAA, 

11/30/2012 10:27 AM 

11/30/2012 10:24:43 AM 

To· 

Cc: John Golinski/ANEIFAA, Paul Donato/ANEIFAA@FAA, Alan Rowe/ANEIFAA, James E 

Gray/ANE/FAA@FAA, Frederick Zink/ANE/FAA@FAA 

Date: 11/30/2012 10:24 AM 

Subject: Re: ACTION BY: 12/6/12 - 2012-NE-36-AD- Rolls Royce Deutschland (RRD) ltd & Co KG Tay 

620, 650-15 Turbofan Engines LPC Disc Assy Life Limitation - Implementation. NPRM - Version 

3.3 

Vince, 

Here is the subject AD with your comments entered. New changes are highlighted in yellow. Please 

review provide comment I concurrence. 

12ne36n

~ .doc 

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 

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 This must be the one ... With comments. 11/29/2012 10:35:11 AM