O N CU RR ENC ES 

### Version 3.0 (January 18 , 2013) 

### [4910-13-P]**~; ~~M** **oL** 

### DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2012-0942; Directorate Identifier 2012-NE-24-AD; Amendment 173 55 

# a.2-.;;J**39-~;** 

### AD 2013-.)..K-.XX] RIN 2120-AA64 Airworthiness Directives; Pratt & 

### Whitney Canada Corp. Turboshaft Engines 

### AGENCY: Federal Aviation Administration (FAA) , DOT. 

### ACTION: Final rule. 

### SUMMARY: We are adopting a new airworthiness directive (AD) for certain serial number Pratt & 

### Whitney Canada Corp. PW206B , PW206B2 , PW206C , PW207C , PW207D , PW207D1 , PW207D2 , and PW207E turboshaft engines. This AD was prompted by the discovery that certain power turbine (PT) disks were made to specific heat codes that may not achieve the maximum in-service life . This AD requires reI N I T I A L S / S I C VBennett/BW DATE 0 1

/3 0/ 13



### ROU TIN

G

S YMBOL identification ofthe PT disk to a part number (PIN) with a lower life limit. We are issuing EG 

### this AD to prevent possible uncontained PT disk failure and loss ofhelicopter control. 

### DATES: This AD becomes effective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER). 

### ADDRESSES: The Docket Operations office is located at Docket Management Facility, U.S. Department ofTransportation, 1200 New Jersey Avenue SE. , West Building Ground oATE( 1 7 

### 2--- 1!1 '7 

### Floor, Room W12-140 , Washington, DC 20590-0001. Rou T I N cs

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IN IT I ALS/SIG 

### A T E

### Re: Fw: ACTION BY: 1/24/13- 2012-NE-24-AD- P&WC Turboshaft EnginesPower Turbine Disk Heat Codes. FR - Ver 2.1 

## [J

Brian; John Keymont to· Brian Warner AEA-BOS-AEG-67, Burlington , MA . C . Alan Rowe, Jam es E Gray , Jam es Law rence, John Golinski , Paul

c . Donato, Tara Fitzgerald


### BOS-AEG concurs with 2012-NE--24-AD ; versions 2.0 and 2 . 1 Best regards ; John John Keymont Aviation Safety I nspector Aircraft Evaluation Group 12 New England Executive Park Burlington, MA 01803 Phone : 781-238-7892 Fax : 781 -238-7898 We value your comments, please fill out the form below : 01/17/2013 04 :07 PM



### http ://www.faa .gov/a bout/office_org/headqua rters_offices/avs/sta keholder_feedbacklafs/field/sf _aeg/

f"""" 

### Brian Warner All : Please note the FR citation number has bee .. . 01/17/2013 12:45:32 PM

From: To: Cc: Date: Su b j ect: 

### All : Brian Warner/ANE/FAA ANE - 11 0 , Standards Staff James Lawre nce/ANE/FAA@FAA , Tara Fitzgerald/ANE/FAA@FAA , John Keymont/AEAIFAA@FAA , James E Gray/ANE/FAA@FAA , John Golinski/ANE/FAA , Paul Donato/ANE/FAA@FAA , Alan Rowe/ANE/FAA 01/17/2013 12 :45 PM Fw : ACTION BY: 1/24/13- 2012-NE-24-AD- P&WC Turboshaft Engines- Power Turbine Disk Heat Codes . FR - Ver 2 . 1


### Please note the FR citation number has been changed in the attached version . Changes are highlighted in yellow . We already had two out of three concurrences , but if you could please provide your concurrence again at 2 . 1 we will be off and runn i ng . [attachment "12ne24f.doc" deleted by John Keymont/AEAIFAA]

Thanks .. . Brian

### Re: Fw: ACTION BY: 1/24/13- 2012-NE-24-AD- P&WC Turboshaft EnginesPower Turbine Disk Heat Codes. FR - Ver 2.1 

## [J James Lawrence . ANE 142 E · 

## c ·f· . B h 142 to: Bnan Warner 01/17/2013 01 : 15PM

- , ngme ert 11 cat 1on ran c
Brian : 

### I concur. Jim Lawrence C . Alan Rowe, James E Gray, John Golinski, John Keymont , Paul c. Donato , Tara Fitzgerald

Tel : 781-238-7176 Fax : 781-238-7199 email : james . lawrence@faa
.gov Brian Warner All : Please note th e FR cita t ion numb er has bee .. . From: To : Brian Warner/ANE/FM ANE-11 0, Standards Staff James Lawrence/ANE/FM@FM, Tara Fitzgerald/ANE/FM@FM, John KeymonUAEA/FM@FM, 0 1/17/2013 12:45 :29 

## PM

Cc: James E Gray/ANE/FM@FM, John Golinski/ANE/FM , Paul Donato/ANE/FM@FM , Alan Rowe/ANE/FM Date: Subje ct: All: 01/17/201312 :45 PM Fw : ACTION BY : 1/24/13- 2012-NE-24-AD- P&WC Turboshaft Engines- Power Turbine Disk Heat Codes . FR - Ver 2 . 1

Please note the FR citation number has been changed in the attached version . Changes are highlighted in yellow . We already had two out of three concurrences, but if you could please provide your concurrence again at 2 . 1 we will be off and running . [attachment "12ne24f.doc" deleted by James Lawrence/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

### Re: Fw: ACTION BY: 1/24/13- 2012-NE-24-AD- P&WC Turboshaft EnginesPower Turbine Disk Heat Codes. FR - Ver 2.1 

## [J Tara Fitzgerald . . A NE- 111 , Rul emakin ga ndPo li cy to. BnanWarner 01/17/201302:19PM Cc: Alan Rowe , James E Gray , James Lawrence , John Golinski , John Keymont , Paul Donato Brian, 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 Brian Warner 'Ail: Plea se note the FR citation number has bee . . . From: To: Brian Warner/ANE/FAA ANE-11 0, Standards Staff James Lawrence/ANE/FAA@FAA, Tara Fitzgerald/ANE/FAA@FAA, John Keymont/AEAIFAA@FAA , 01/ 17/20 13 12 :45:29 PM

Cc : James E Gray/ANE/FAA@FAA , John Golinski/ANE/FAA, Paul Donato/ANE/FAA@FAA, Alan Rowe/ AN E/FAA Date : Subj ect: All : 01117/201312 :45 PM Fw : ACTION BY : 1/24113- 2012-NE-24-AD- P&WC Turboshaft Engines- Power Turbine Disk Heat Codes. FR- Ver 2 . 1

Please note the FR citation number has been changed in the attached version . Changes are highlighted in yellow . We already had two out of three concurrences, but if you could please provide your concurrence again at 2 . 1 we will be off and running . [attachment "12ne24f.doc" deleted by Tara Fitzgerald/ANE/FM]

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

### Fw: ACTION BY: 1/25/13- 2012-NE-24-AD- P&WC Turboshaft EnginesPower Turbine Disk Heat Codes. FR - Ver 3.0 James Lawrence t AI R ANE-142, Engine Certification Branch 142 o: an owe

Jim Lawrence Tel : 781-238-7176 Fax : 781-238-7199 email : james.lawrence@faa
.gov -----Forwarded by James Lawrence/ANE/FAA on 02/04/2013 09:29AM----- From: To: Vincent BennetUANE/FAA ANE-142 , Engine Certification Branch 142 Brian Warner/ANE/FAA@FAA, 02/04/2013 09:29 AM

Cc: Alan Rowe/ANE/FAA@FAA , James E Gray/ANE/FAA@FAA, James Lawrence/ANE/FAA@FAA , John Golinski/ANE/FAA@FAA, Paul Donato/ANE/FAA@FAA Date : Subject: Legal concurs . Regards, 

# v 01/30/2013 03:09PM Fw : ACTION BY : 1125/13- 2012-NE-24-AD- P&WC Turboshaft Engines - Power Turbine Disk Heat Codes . FR - Ver 3.0

-----Brian Warner/ANE/FAA wrote:- ---- To: Vincent Bennett!ANE/FAA@FAA From: Brian Warner/ANE/FAA Date: 01/18/2013 07:41AM Cc : Alan Rowe/ANE/FAA, James E Gray/ANE/FAA@FAA, James Lawrence/ANE/FAA@FAA, John Golinski/ANE/FAA, Paul Donato/ANE/FAA@FAA Subject: Fw: ACTION BY : 1/25/13- 2012-NE-24-AD- P&WC Turboshaft Engines- Power Turbine Disk Heat Codes. FR - Ver 3.0 Vince, Please review and provide comment 

### I concurrence . 

### (See attached file: 12ne24f.doc) Thanks .. . Brian 

## Brian M. Warner Federal Aviation Administration