Version 3.0 1211 7/ 12 [4910-13-P] 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2012-0416; Directorate Identifier 2012-NE-13-AD; Amendment 

39 .XXXXX; AD 2012-X-X-XX] 

t 7 3 o .?:> ~t.. &8 

RIN 2120-AA64 

Ainvorthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are superseding an existing airworthiness directive (AD) for all 

Pratt & Whitney Canada Corp. (P&WC) PW118, PW118A, PW118B, PW119B, 

PW119C, PW120, PW120A, PW121 , PW121A, PW123, PW123B, PW123C, 

PW123D, PW123E, PW123AF, PW124B, PW125B, PW126A, PW127, PW127E, 

PW127F, PW127G, and PW127M turboprop engines. That AD currently requires 

initial and repetitive inspections of certain serial numbers (SINs) of propeller shafts for 

cracks and removal from service if found cracked. This new AD requires the same 

actions, but requires removal from service of affected propeller shafts as mandatory 

terminating action to the repetitive inspections. This AD was prompted by reports of 

two propeller shafts found cracked at time of inspection during maintenance. We are 

issuing this AD to detect propeller shaft cracks, which could cause failure of the shaft, 

propeller release, and loss of control of 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 

Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec, Canada, J4G lAl ; phone: 

800-268-8000; fax: 450-647-2888; Web site: www. pwc.ca. You may view this service 

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Re: ACTION BY: 12/20112- 2012-NE-13-AD- P&WC Truboprop Engines 

Propeller Shaft Cracks. FRS - Version 2.0 [] 

Tara Fitzgerald . 

ANE 111 R I k

. d P 1. to: Bnan Warner 12/14/2012 07:45AM - , u ema mg an o 1cy 

Brian, 

Cc Alan Rowe, James E Gray, James Lawrence, John Golinski, John 

· Keymont, Paul Donato 

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 All : Please review and provide comment I concu ... 

From: 

To: 

Brian Warner/ANE/FAA 

ANE-11 0, Standards Staff 

James Lawrence/ANE/FAA@FAA, John Keymont/AEAIFAA@FAA, Tara 

Fitzgerald/ANE/FAA@FAA, 

12/14/2012 07:1 5:55 AM 

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

Rowe/ANE/FAA 

Date: 

Subject: 

All : 

12/14/2012 07:15AM 

ACTION BY: 12/20/12- 2012-NE-13-AD- P&WC Truboprop Engines Propeller Shaft Cracks. FRS -

Version 2.0 

Please review and provide comment I concurrence. 

[attachment "12ne13fs.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 
~ 5 Re: ACTION BY: 12/20/12- 2012-NE-13-AD- P&WC Truboprop Engines 

Propeller Shaft Cracks. FRS- Version 2.0 [j 

John Keymont . AEA-BOS-AEG-67, Burlington, MA to Bnan Warner 12/17/2012 09:20AM 

C Alan Rowe, James E Gray, James Lawrence, John Golinski, Paul 

.c. Donato, Tara Fitzgerald 

Hello Brian; 

BOS-AEG concurs with version 2.0. 

Regards; 

John 

John Keymont 

Aviation Safety Inspector 

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: 

http:llwww.faa.govlabouVoffice_orglheadquarters_officeslavslstakeholder_feedbacklafslfieldlsf_aegl 

Brian Warner All: Please review and provide comment I concu ... 

From: 

To: 

Brian Warner/ANE/FAA 

ANE-11 0, Standards Staff 

James Lawrence/ANE/FAA@FAA, John KeymonUAEA/FAA@FAA, Tara 

Fitzgerald/ AN ElF AA@F AA, 

1211412012 07:15:58 AM 

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

Rowe/ANE/FAA 

Date: 

Subject: 

All: 

12/14/2012 07: 15AM 

ACTION BY: 12/20/12 - 2012-NE-13-AD- P&WC Truboprop Engines Propeller Shaft Cracks. FRSVersion 2.0 

Please review and provide comment I concurrence. 

[attachment "12ne13fs.doc" deleted by John KeymonVAEA/FAA] 

Thanks .. . 

Brian 

Brian M. Warner 

Federal Aviation Administration 
t 

~ :....;;' 

Re: ACTION BY: 12/21/12- 2012-NE-13-AD- Pratt & Whitney Canada 

Turboprop Engines Propeller Shaft Cracks. Final Rule Supersedure - Ver 3.0 

[J 

Vincent Bennett . 

ANE 007 Off. f R . 1 

c 1 to. Bnan Warner 12/17/2012 12:04 PM - , 1ce o eg1ona ounse 

Legal concurs. 

Regards, 

v 

Cc: Alan Rowe, James E Gray, James Lawrence, John Golinski, Paul 

Donato 

Brian Warner Vince, Please review and provide comment I co ... 

From: 

To: 

Brian Warner/ANE/FAA 

ANE-11 0, Standards Staff 

Vincent Bennett/ANE/FAA@FAA, 

121 171201 2 10:39:58 AM 

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

Gray/ANE/FAA@FAA, James Lawrence/ANE/FAA@FAA 

Date: 

Subject: 

Vince, 

12/17/201210:39 AM 

ACTION BY: 12/21/12- 2012-NE-13-AD- Pratt & Whitney Canada Turboprop Engines Propeller 

Shaft Cracks. Final Rule Supersedure - Ver 3.0 

Please review and provide comment I concurrence. 

12ne13fs.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/aboutloffice erg/headquarters offices/avs/stakeholder feedback/air/field/ 
Re: ACTION BY: 12/20/12- 2012-NE-13-AD- P&WC Truboprop Engines 

Propeller Shaft Cracks. FRS -Version 2.0 [J 

James Lawrence . 

ANE 142 E . c 1

.f. 1

. B h 142 to Bnan Warner 12/17/2012 08:30AM - , ngme e1 1 1ca 10n ranc 

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 review and provide comment I concu .. . 

From: 

To: 

Brian Warner/ANE/FAA 

ANE-11 0, Standards Staff 

James Lawrence/ANE/FAA@FAA, John KeymonUAEAIFAA@FAA, Tara 

Fitzgerald/ANE/FAA@FAA, 

1211412012 07:15:55 AM 

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

Rowe/ANE/FAA 

Date: 

Subject: 

All: 

12/14/2012 07:15AM 

ACTION BY: 12/20/12- 2012-NE-13-AD- P&WC Truboprop Engines Propeller Shaft Cracks. FRSVersion 2.0 

Please review and provide comment I concurrence. 

[attachment "12ne13fs.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 

brian.warner@faa.gov