# BULLETIN INDEX LOCATOR 

# 72-50-01

TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF
MODEL APPLICATION PW118A, PW118B, PW119B, PW119C, PW123, PW123B, PW123C, PW123D, PW123E, PW123AF, PW124B, PW125B, PW126, PW126A, PW127, PW127B, PW127D, PW127E, PW127F, PW127G, PW127H, PW127J, PW127M Commercial Support Program No: 1006354 Compliance: CATEGORY 5 Summary: This service bulletin provides instructions for a one time inspection on a range of First Stage Power Turbine (PT1) blades part numbers and serial numbers as per an improved X-Ray inspection as currently used in manufacturing. 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Cover Sheet

24-Hour Global Service USA & CANADA........................ **1-800-268-8000** Other .......................................... **1-450-647-8000** 

### CFIRST CENTRE International .................... **(IAC*)+8000-268-8000** Fax ............................................. **1-450-647-2888** Toll free where available (SIL GEN-027) * International Access Code Web Site .................................. **www.pwc.ca**WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. (′′ P&WC′′), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC’s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1.

**Export Control Classification** *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. **Regulation Classification Number**  Canadian ECL(s)* ECCN(s)* P-ECCN(s)** 9E991 USML (ITAR)* P-USML**REVISION TRANSMITTAL SHEET TURBOPROP ENGINE MODEL PW100

SUBJECT: Pratt & Whitney Canada Service Bulletin No. PW100-72-21823, Rev. No. 2, dated Nov 15/2012 (P&WC S.B. No. 21823R2) FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF

Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy.

Please retain this Revision Transmittal Sheet with the revised bulletin.

SUMMARY: This service bulletin is revised to

v change address and contact person of company authorized to X-ray inspect blades.

v Update accomplishment instructions.

EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None.
NOTE: A black bar in the left margin indicates a change in that line of text or figure.

REVISION HISTORY: Original Issue: Sep 27/2012 Revision No. 1: Oct 09/2012 Revision No. 2: Nov 15/2012 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél. 450-677-9411

15 November 2012

P&WC S.B. No. 21823R21. Planning Information A. Effectivity PW118A/PW118B Engines PW119B/PW119C Engines PW123 Engines which are between and include Serial No. PCE-AE0106 and Serial No. PCE-AE0151 PW123B Engines which are between and include Serial No. PCE-AR0046 and Serial No. PCE-AR0056 PW123C Engines PW123D Engines which are between and include Serial No. PCE-AG0127 and Serial No. PCE-AG0143 PW123E Engines which are between and include Serial No. PCE-AW0114 and Serial No. PCE-AW0160 PW123AF Engines which are between and include Serial No. PCE-AF0088 and Serial No. PCE-AF0128 PW124B Engines PW125B Engines PW126 / PW126A Engines PW127 Engines PW127B Engines PW127D Engines PW127E / PW127F Engines which are between and include Serial No. PCE-EB0210 and Serial No. PCE-EB0365 PW127G Engines which are between and include Serial No. PCE-AX0072 and Serial No. PCE-AX0151 PW127H Engines which are between and include Serial No. PCE-AY0010 and Serial No. PCE-AY0019 PW127J Engines which are between and include Serial No. PCE-EA0037 and Serial No. PCE-EA0155 PW127M Engines which are between and include Serial No. PCE-ED0001 and Serial No. PCE-ED0113 NOTE: 1. The above effectivity list identifies engines with PT1 blade serial numbers listed in Table 1 (P/N 3120973-01, 3120983-01, 3054053-01). NOTE: 2. The above effectivity list does not identify engines with PT1 blades replaced or installed as new at an approved overhaul shop. NOTE: 3. The above effectivity list does not identify engines that have been converted from one engine model to another engine model via an engine conversion service bulletin. To clarify the effectivity of converted engines, refer to the PW100 Workscope Planning Guide, P/N 3040879, Converted Engines section. B. Concurrent Requirements None. P&WC No. DCR20348 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

P&WC Proprietary Information. Subject to the restrictions on the back of the locator The export control classification with respect to this document is contained on the back of the locator. Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Page 1 of 6 © 2012 Pratt & Whitney Canada Corp. PRINTED IN CANADA TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF1. Planning Information (Cont’d)
C. Reason This service bulletin provides instructions for a one time inspection on a range of First Stage Power Turbine (PT1) blades part numbers and serial numbers as per an improved X-Ray inspection as currently used in manufacturing. D. Description Perform a one time X-Ray inspection of PT1 blades listed in Table 1. E. Compliance CATEGORY 5 - P&WC recommends to do this service bulletin when the engine is disassembled and access is available to the necessary subassembly (i.e. module, accessories, components, or build groups). Do all spare subassemblies. F. Approval D.A.A. approved G. Manpower No more man-hours are necessary to include this service bulletin at overhaul. H. Weight and Balance None.
I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not changed.
K. References Illustrated Parts Catalog P/N 3034624 (PW118/118A/118B) Illustrated Parts Catalog P/N 3038534 (PW119B/119C) Illustrated Parts Catalog P/N 3036434 (PW123/123B/123C/123D/123E) Illustrated Parts Catalog P/N 3034540 (PW123AF) Illustrated Parts Catalog P/N 3037334 (PW124B/127/127E/127F/127M) Illustrated Parts Catalog P/N 3039724 (PW127B) 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

P&WC Proprietary Information. Subject to the restrictions on the back of the locator The export control classification with respect to this document is contained on the back of the locator. Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Page 2 of 6 TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF1. Planning Information (Cont’d)
Illustrated Parts Catalog P/N 3034924 (PW126/126A/127D) Illustrated Parts Catalog P/N 3044824 (PW127G) Illustrated Parts Catalog P/N 3045544 ( PW127H) Illustrated Parts Catalog P/N 3043394 (PW127J) Overhaul Manual P/N 3034623 (PW118/118A/118B) Overhaul Manual P/N 3036433 (PW123/123B/123C/123D/123E) Overhaul Manual P/N 3034539 (PW123AF) Overhaul Manual P/N 3037333 (PW124B/127/127E/127F/127M) Overhaul Manual P/N 3034933 (PW125B/PW127B) Overhaul Manual P/N 3034923 (PW126/126A/127D) Overhaul Manual P/N 3044823 (PW127G) Overhaul Manual P/N 3045543 ( PW127H) Overhaul Manual P/N 3043393 (PW127J) Service Information Letter No. PW100-151 Special Instruction No. 70-2012 Cleaning Inspection Repair Manual (CIR) 3043515 L. Publications Affected None. M. Interchangeability and Intermixability of Parts Not applicable. 2. Material Information A. Industry Support Information Refer to Commercial Support Program Notification number 1006354 B. Material - Cost and Availability Not applicable. C. Material Necessary for Each Engine Not applicable. D. Reidentified Parts None. E. Tooling - Price and Availability Not applicable. 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

P&WC Proprietary Information. Subject to the restrictions on the back of the locator The export control classification with respect to this document is contained on the back of the locator. Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Page 3 of 6 TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF3. Accomplishment Instructions A. Disassemble the first stage PT blades. Refer to the instructions in the applicable overhaul manual (Ref. Chapter 72-50-00, TURBINE SECTION - DISASSEMBLY). B. Clean the first stage PT blades. Refer to the instructions in the applicable PW100 CIRmanual (Ref. Chapter 72-53-12, FIRST-STAGE PT BLADE - CLEANING-01/CLEANING02). C. Perform a visual inspection of the blades for part number and serial number listed in Table 1. D. For blades with suffix R2 next to part number go to step G. E. For blades with part number and serial number not listed in Table 1, no further action is required. Go to step G. F. For blades with part number and serial number listed in Table 1, do one of the following: (1) Replace with new serviceable blade. Go to step G. NOTE: Retain old PT1 blades listed in Table 1, as replacement of blades is subject to hardware availability. (2) Inspect first stage PT blades, (Refer to the instructions in the applicable PW100 CIR manual (Ref. Chapter 72-53-12, FIRST-STAGE PT BLADE - INSPECTION/ CHECK-01/-02/-03)) and perform X-Ray inspection of the PT1 blades. (a) Send blades to the following address for X-Ray inspection as per SI 70-2012: Pratt & Whitney Canada Corp. P&WC Service Center 7007 De La Savane, St. Hubert, Quebec Canada J3Y 3X7 Attention: Pierre Verrier (05AK2) **OR** NDT EXPERT Parc d’Activités de Saint-Martin du Touch 18 Rue Marius Terce Toulouse Cedex 3 France BP 13033 - 31024 Attention: Eric Malarme, Directeur des Opérations TEL: +33 5 34 36 12 12 FAX: +33 5 34 36 12 22 EMAIL: e.malarme@ndt-expert.fr **OR** 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

P&WC Proprietary Information. Subject to the restrictions on the back of the locator The export control classification with respect to this document is contained on the back of the locator. Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Page 4 of 6 TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF3. Accomplishment Instructions (Cont’d)
SETSCO SERVICES PTE LTD Setsco Aerospace Testing Centre 20 Changi North Crescent Singapore 499613 Attention: Palanivelu Ratnavelu TEL: (65) 6542 8442/3 (65) 8499 2401 (Mobile) EMAIL: ratna@setsco.com NOTE: This additional X-ray inspection does not replace the existing inspection and requirements per the relevant Overhaul Manual to determine if a blade is serviceable. 1 For blades rejected at X-ray inspection, do the following: a Replace with new, serviceable blade. b Record blade information (Engine S/N, blade P/N, blade S/N, blade TTSN) and send blade with its information to the following P&WC address: Pratt & Whitney Canada Corp. MQA X-Ray Lab 1000 Boul. Marie-Victorin, Longueuil, Quebec Canada J4G 1A1 Attention: Frank Miranda / Michael Polletta **WARNING:** USE EYE PROTECTION WHEN YOU WRITE WITH THE VIBRATION PEENING PROCEDURE. 2 For blades that have passed the x-ray inspection, use the vibration peening procedure, 0.003 to 0.006 in. (0.08-0.15 mm) deep, and write the suffix R2 next to the blade part number. G. Assemble the Power Turbine Disk Assembly (First-stage) - Subassembly. Refer to the instructions in the applicable overhaul manual :

v Ref. OHM, Chapter 72-50-00, TURBINE SECTION - SUBASSEMBLY-1 H. Write accomplishment of P&WC S.B. No. 21823 in the applicable engine module log book. 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

P&WC Proprietary Information. Subject to the restrictions on the back of the locator The export control classification with respect to this document is contained on the back of the locator. Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Page 5 of 6 TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF4. Appendix A. Refer to Table1 for range of First Stage Power Turbine Blade Serial Numbers to be X-ray inspected at next shop visit. TABLE 1, First Stage Power Turbine Blade Serial Numbers Part Numbers Serial No. Range

3120973-01 3120983-01 3054053-01 HMM00000 TO HMM99999 HMN00000 TO HMN99999 HMP00000 TO HMP99999 HMQ00000 TO HMQ99999 HWA00000 TO HWA99999 HWAB0000 TO HWAB9999 HWAC0000 TO HWAC9999 HWAD0000 TO HWAD9999 HWAE0000 TO HWAE9999 HWAF0000 TO HWAF9999 HWAH0000 TO HWAH9999 HWAK0000 TO HWAK9999 HWAL0000 TO HWAL9999 HWAM0000 TO HWAM9999 HWAN0000 TO HWAN9999 HWAP0000 TO HWAP9999 HWAR0000 TO HWAR9999 HWAT0000 TO HWAT9999 HWAW0000 TO HWAW9999 HWAX0000 TO HWAX9999 HWAY0000 TO HWAY8649 

### PRATT & WHITNEY CANADA 

# SERVICE BULLETIN
P&WC S.B. No. 21823R2

P&WC Proprietary Information. Subject to the restrictions on the back of the locator The export control classification with respect to this document is contained on the back of the locator. Sep 27/2012 **PW100-72-21823** Revision No. 2: Nov 15/2012 Page 6 of 6 TURBOPROP ENGINE FIRST STAGE POWER TURBINE BLADES - INSPECTION/REPLACEMENT OF