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Version 3.0 (10110/2012) [4910-13-P) DEPARTMENT OFTRANSPORTATION Federal Aviation Administration 

### 14 CFR Part39 [DocketNo. FAA-2012-0546; Directorate Identifier2012-NE-15-AD; Amendment 

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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 DivisionPW4050, 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 ofdamaged 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 ofthe 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 ofthe referenced service inf-ormation at the FAA, Engine & 

### Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability ofthis material at the FAA, call 781-238-7125.Version 3.0 (10/10/2012) [4910-13-P] DEPARTMENT OF TRANSPORTATION 

### FederalAviation Administration 14 CFRPart39 [DocketNo. FAA-2012-0546; Directorate Identifier2012-NE-15-AD RIN 2120-AA64] 

### Ainvorthiness Directives; 

### Pratt & 

### Whitney Division Turbofan Engines AGENCY: Federal AviationAdministration (FAA), DOT. 

### 1

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

## \. Whitney DivisionPW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062,PW4062A,PW4152,PW4156,PW4156A,PW4158,PW4160,PW4460, IX. PW4462, andPW4650 ttnbofan engines, including models with any dash number suffi This AD was prompted by 16 reports ofdamaged orfailed 3rd stage low-pressure turb (LPT) duct segments. This AD requires removing from service certainpart numbers (PINs) of3rd stage LPT duct segments. We are issuingthis AD to prevent failure ofth 

### 3rd stage 

### LPT duct segments, which could lead to 

### LPT rotor damage, uncontained eng failure, and damage tothe airplane. DATES: This AD is effective [INSERTDATE 35 DAYS AFTERDATE OF PUBLICATION IN THE FEDERAL REGISTER]. ine

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### ADDRESSES: 

### For service infonnation identified in this AD, contactPratt & 

### Whitney, 400 MainSt., EastHartford, CT 06108; phone: 860-565-8770; fax: 860-565-4503. Yo u mayreviewcopies ofthe referenced service information atthe FAA, Engine & Propeller Directorate, 12 New England Executive Park,Burlington,MA. For information onthe availability ofthis material at the FAA, call 781-238-7125. SCURRENCES lJTINGSYMBOL f'-NE-110

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## 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 LPTduct segments, Final rule - Version 3.0 

### [;a Vincent Bennett t D IA 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.docFrom: 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/headguarters 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/anemailclsl.faa.gov/mail5/drexelace.nsf/(%24Inbox)/ A IBD993ED5E4995F85257... I0/10/20I2From: 

### 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, Glorianne 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:/ /anemailclsl.faa.gov/mail5/drexelace.nsf/(%24lnbox)/D4A126036491OAF385257
... I0/10/2012