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Version 3.0 (10110/2012) [4910-13-P) 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2012-0546; Directorate Identifier 2012-NE-15-AD; Amendment 

) 7 :J..E;'J ~; AD t***-**-0:] 

,.ol~,..., ?--I" . RIN 2120-AA6~ 

. , 

Airworthiness Directives; Pratt & Whitney Division Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new airworthiness directive (AD) for all Pratt & 

Whitney Division PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, 

PW4062,PW4062A,PW4152,PW4156,PW4156A,PW4158,PW4160,PW4460, 

PW4462, and PW4650 turbofan engines, including models with any dash number suffix. 

This AD was prompted by 16 reports of damaged or failed 3rd stage low-pressure 

(LPT) duct segments. This AD requires removing from service certain part numbers 

(PINs) of3rd stage LPT duct segments. We are issuing this AD to prevent failure of the 

3rd stage LPT duct segments, which could lead to LPT rotor damage, uncontained enllin''~~::;;;;;-­

failure, and damage to the airplane. 

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

ADDRESSES: For service information identified in this AD, contact Pratt & Whitney, 

400 Main St., East Hartford, CT 06108; phone: 860-565-8770; fax: 860-565-45p03rc.,pYeol'lu<lr~=~~~ 

may review copies of the referenced service inf-ormation at the FAA, Engine & 

Directorate, 12 New England Executive Park, Burlington, MA. For information on the 

availability of this material at the FAA, call 781-238-7125. 
Version 3.0 (10/10/2012) [4910-13-P] 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2012-0546; Directorate Identifier 2012-NE-15-AD 

RIN 2120-AA64] 

Ainvorthiness Directives; Pratt & Whitney Division Turbofan Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

1 

;~::~:~:~~~ adopting a new airworthiness directive (AD) for all Pratt & ) \. 

Whitney Division PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, 

PW4062,PW4062A,PW4152,PW4156,PW4156A,PW4158,PW4160,PW4460, 

PW4462, and PW4650 ttnbofan engines, including models with any dash number suffi IX. 

This AD was prompted by 16 reports of damaged or failed 3rd stage low-pressure turb 

(LPT) duct segments. This AD requires removing from service certain part numbers 

(PINs) of3rd stage LPT duct segments. We are issuing this AD to prevent failure ofth 

3rd stage LPT duct segments, which could lead to LPT rotor damage, uncontained eng 

failure, and damage to the airplane. 

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

ine 

e 

ine 

ADDRESSES: For service infonnation identified in this AD, contact Pratt & Whitney , 

400 Main St., East Hartford, CT 061 08; phone: 860-565-8770; fax: 860-565-4503. Yo u 

may review copies of the referenced service information at the FAA, Engine & Propel ler 

Directorate, 12 New England Executive Park, Burlington, MA. For information on the 

availability of this material at the FAA, call 781-238-7125. 

SCURRENCES 

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Legal concurs. 

R, 

v 

Drexel Ace 

From: 

To: 

Cc: 

Date: 

Subject: 

Hi Vince, 

Re: ACTION BY 10/17/2012: 12-NE-15-AD, Pratt & Whitney Division, 3rd 

stage LPT duct segments, Final rule - Version 3.0 [;a 

Vincent Bennett t D I A 10/22/2012 03 52 PM ANE-007, Office of Regional Counsel o: rexe ce : 

Cc: Alan Strom, James E Gray, John Golinski, Paul Donato 

Drexel Ace/ANE/FAA 

ANE-007, Office of Regional Counsel 

Vincent BennetUANEIFAA@FAA, 

, 10/10/201203:41:44 PM 

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

Alan Strom!ANE/FAA@FAA 

10/10/2012 03:41PM 

ACTION BY 10/17/2012: 12-NE-15-AD, Pratt & Whitney Division, 3rd stage LPT duct segments, 

Final rule -Version 3.0 

Version 3.0 attached for your review. 

Thanks. 

--Drexel 

Drexel Ace 

Technical Writer-Editor 

Federal Aviation Administration 

Air Certification Service 

Engine & Propeller Directorate Standards Staff, ANE-110 

Burlington, MA 

Phone: 781-238-7197 12ne15fr.doc 
From: 

To: 

Cc: 

Date: 

Peter O'Leary/ANE/FAA 

Drexel Ace/ANE/FAA@FAA 

John Golinski/ANE/FAA@FAA, Paul Donato/ANE/FAA@FAA 

Wednesday, October 10, 2012 08:48AM 

Page I of3 

Subject: Re: Fw: ACTION BY 10/15/2012: 12-NE-15-AD, Pratt & Whitney Division, 3rd stage 

LPT duct segments, Final rule-- Version 2.0 

Drexel, 

Concur. 

Peter C. O'Leary 

Aviation Safety Inspector 

Propulsion Specialist 

12 New England Executive Park 

Burlington, MA 01830 

781-238-7890 

781-238-7898 fax 

781-439-5974 cell 

" Common sense is genius dressed in working clothes" 

Ralph Waldo Emerson 

We value your comments, please fill out the form below: 

http://www. faa .gov /about/office org/headg uarters offices/avs/stakeholder feed 

back/afs/field/sf aeg/ 

'{)'Drexel Ace---10/09/2012 02:41·.45 PM---Hi Peter, I received the new AEG assignment 

spreadsheet today, and realize that you have replaced Du 

Drexel Ace/ANE/FAA 

From: ANE-110, Standards Staff 

Peter O'Leary/ANE/FAA@FAA 

To: 

Cc: John Golinski/ANE/FAA@FAA, Paul Donato/ANE/FAA@FAA 

https:l/anemailcls l.faa.gov/mail5/drexelace.nsf/(%24Inbox)/ A I BD993ED5E4995F85257... I 0/10/20 I2 
From: 

To: 

Alan Strom/ANE/FAA 

Drexel Ace/ANE/FAA@FAA 

Page I of2 

Cc:. Duane Wood/ANE/FAA@FAA, Glorianne Niebuhr/ANE/FAA@FAA, James E 

Gray/ANE/FAA@FAA, John Golinski/ANE/FAA@FAA, Jonathan Galvin/ANE/FAA@FAA, 

Paul Donato/ANE/FAA@FAA 

Date: Friday, October OS, 2012 10:42AM 

Subject: Re: ACTION BY 10/15/2012: 12-NE-15-AD, Pratt & Whitney Division, 3rd stage LPT 

duct segments, Final rule-- Version 2.0 

Drexel, 

I concur with v2.0. 

Regards, 

Alan 

Alan B. Strom 

Aerospace Engineer 

Aircraft Certification Service 

Engine & Propeller Directorate Standards Staff 

ANE-110 

12 New England Executive Park 

Burlington, MA 01803 

T (781) 238-7143 

F (781) 238-7199 

"VDrexel Ace---10/05/2012 09:51:22 AM---Version 2.0 for your review. Thanks. 

Drexel Ace/ ANE/FAA 

From: ANE-110, Standards Staff 

James E Gray/ANE/FAA@FAA, Duane Wood/ANE/FAA@FAA, Alan 

To: Strom/ANE/FAA@FAA 

John Golinski/ANE/FAA@FAA, Jonathan Galvin/ANE/FAA@FAA, Paul 

Cc: Donato/ANE/FAA@FAA, Gloria nne Niebuhr/ANE/FAA@FAA 

10/05/2012 09:51 AM 

Date: 

ACTION BY 10/15/2012: 12-NE-15-AD, Pratt & Whitney Division, 3rd stage LPT 

Subject:duct segments, Final rule-- Version 2.0 

Version 2.0 for your review. 

Thanks. 

[attachment "12-NE-15 FR.doc" deleted by Alan Strom/ANE/FAA] 

Drexel Ace 

https:/ /anemailcls l.faa.gov/mail5/drexelace.nsf/(%24lnbox)/D4A 126036491 OAF385257 ... I 0/10/2012