# BULLETIN INDEX LOCATOR 

# 72-10-00

TURBOPROP ENGINE PROPELLER SHAFT - REPLACEMENT OF MODEL APPLICATION PW118, PW118A, PW118B, PW119B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW123AF, PW124B, PW125B, PW126, PW126A, PW127, PW127B, PW127E, PW127F, PW127G, PW127H, PW127J, PW127M Commercial Support Program No: 1005865 Compliance: CATEGORY 3 Summary: Two instances of propeller shafts with cracks at the Bearing No. 19 area, were discovered during troubleshooting for oil leakage in the propeller shaft area. The investigation has determined that the crack initiation was resulting from a repair process not performed in accordance with the current published P&WC Cleaning, Inspection and Repair (CIR) Manual. Both propeller shafts found with circumferential crack had been processed consecutively in the past for nickel plating repair. This service bulletin gives instructions to remove from service the propeller shafts that were repaired at the same facility and within the same time period as the shafts found with circumferential crack. 

### PRATT & WHITNEY CANADA 

# ALERT SERVICE BULLETIN
P&WC S.B. No. A21802R4

May 10/2011 **PW100-72-A21802** Revision No. 4: Mar 16/2012 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-A21802, Rev. No. 4, dated Mar 16/2012 (P&WC S.B. No. A21802R4) PROPELLER SHAFT - 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 Delete note 2 Ref Para 4.A.

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: May 10/2011 Revision No. 1: May 18/2011 Revision No. 2: Mar 08/2012 Revision No. 3: Mar 13/2012 Revision No. 4: Mar 16/2012 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél. 450-677-9411

16 March 2012
P&WC S.B. No. A21802R41. Planning Information A. Effectivity All PW100 engines fitted with propeller shafts with serial numbers listed in Table 1. B. Concurrent Requirements None. C. Reason (1) Problem There were two events where the propeller shaft was found with a circumferencial crack at the No.19 bearing area. This condition was discovered while troubleshooting an oil leak at the propeller shaft seal area. (2) Cause The crack initiation was resulting from a repair process not performed in accordance with the current published P&WC Cleaning, Inspection and Repair (CIR) manual. Both shafts had been repaired with nickel plating at the same facility within the same time period. (3) Solution This service bulletin gives instructions to replace the propeller shafts that were repaired in the same facility during the same time period as the shafts found with circumferential crack. D. Description This service bulletin gives instructions to remove the propeller shafts identified in Table 1. E. Compliance CATEGORY 3 - P&WC recommends that the affected propeller shafts be removed from service no later than April 30th, 2012. F. Approval D.A.A. approved G. Manpower Once you have access to the part, an estimate of 35 man-hours is required to include this service bulletin at maintenance. P&WC No. DCR14035 

### PRATT & WHITNEY CANADA 

# ALERT SERVICE BULLETIN
P&WC S.B. No. A21802R4

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. May 10/2011 **PW100-72-A21802** Revision No. 4: Mar 16/2012 Page 1 of 5 © 2011 Pratt & Whitney Canada Corp. PRINTED IN CANADA TURBOPROP ENGINE PROPELLER SHAFT - REPLACEMENT OF1. Planning Information (Cont’d) 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 3034644 (PW120/121/121A) Illustrated Parts Catalog P/N 3034634 (PW120A/121) 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 3034934 (PW125B) Illustrated Parts Catalog P/N 3039724 (PW127B) Illustrated Parts Catalog P/N 3034924 (PW126/126A) 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 3034643 (PW120/121/121A) Overhaul Manual P/N 3034633 (PW120A/121) 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) Overhaul Manual P/N 3044823 (PW127G) Overhaul Manual P/N 3045543 ( PW127H) Overhaul Manual P/N 3043393 (PW127J) Engine Manual P/N 3038533 (PW119B/119C) P&WC S.B. No. 21798 P&WC S.B. No. 21801 L. Publications Affected None. 

### PRATT & WHITNEY CANADA 

# ALERT SERVICE BULLETIN
P&WC S.B. No. A21802R4

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. May 10/2011 **PW100-72-A21802** Revision No. 4: Mar 16/2012 Page 2 of 5 TURBOPROP ENGINE PROPELLER SHAFT - REPLACEMENT OF1. Planning Information (Cont’d) M. Interchangeability and Intermixability of Parts Not applicable. 2. Material Information A. Industry Support Information Refer to Commercial Support Program Notification number 1005865. 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. 3. Accomplishment Instructions NOTE: 1. Refer to the latest revision of SIL PW100-141 for additional background information on this propeller shaft replacement. NOTE: 2. The operator should visually confirm the S/N, of the propeller shaft, marked on the outside diameter of the mounting flange prior to removing it from the aircraft. It may be necessary to remove the propeller to see the serial number marking on the shaft. A. Remove and discard the propeller shaft with serial number identified in Tables 1 per Special Instruction SI 38-2011 or per instructions in overhaul manual. B. Install a new propeller shaft per instructions in overhaul manual or Special Instruction SI 38-2011. C. Write accomplishment of P&WC S.B. No. 21802 in the applicable engine module log book. 

### PRATT & WHITNEY CANADA 

# ALERT SERVICE BULLETIN
P&WC S.B. No. A21802R4

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. May 10/2011 **PW100-72-A21802** Revision No. 4: Mar 16/2012 Page 3 of 5 TURBOPROP ENGINE PROPELLER SHAFT - REPLACEMENT OF4. Appendix A. Refer to Table 1 for affected Propeller Shafts Serial Numbers. NOTE: 1. Propeller shafts marked with an asterisk have been confirmed as installed on the specified RGB serial number which should remain out of service until the affected propeller shaft S/N is removed. All other propeller shafts listed in Table 1 have been confirmed as removed from service. NOTE: 2. Deleted. TABLE 1, Propeller Shafts Affected (Sorted by Shaft S/N) Shaft S/N P/N RGB S/N

14A755 3 1111 19-02 120256 1T814* 3 1111 19-02 121026 1T841 3 1111 19-02 120584 1X127 3111625-02 124480 24A021 3123342-01 AR0009 25A830 3123342-01 123018 25A926 3123342-01 AR0021 26A057 3123342-02 AG0055 2N241 3 1111 19-02 121082 2P801* 3 1111 19-02 121245 2T122 3 1111 19-02 120321 2X496* 3111625-02 124615 3L960 3038805 120217 3M657 3 1111 19-02 120719 3R451 3 1111 19-02 121085 3R727 3 1111 19-02 123093 4X673 3115424-01 127031 5X698 3 1111 19-02 121319 6W376 3 1111 19-02 121060 6Y104* 3 1111 19-02 120133 7W372 3111625-01 125122 

### PRATT & WHITNEY CANADA 

# ALERT SERVICE BULLETIN
P&WC S.B. No. A21802R4

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. May 10/2011 **PW100-72-A21802** Revision No. 4: Mar 16/2012 Page 4 of 5 TURBOPROP ENGINE PROPELLER SHAFT - REPLACEMENT OF4. Appendix (Cont’d) TABLE 1, Propeller Shafts Affected (Sorted by Shaft S/N) (Cont’d) Shaft S/N P/N RGB S/N

8K175 3107036-02 120391 9W625* 3 1111 19-02 120931 A00002DM 3123342-01 AG0052 NOTE 1: Deleted. 

### PRATT & WHITNEY CANADA 

# ALERT SERVICE BULLETIN
P&WC S.B. No. A21802R4

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. May 10/2011 **PW100-72-A21802** Revision No. 4: Mar 16/2012 Page 5 of 5 TURBOPROP ENGINE PROPELLER SHAFT - REPLACEMENT OF