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. A21802R4

1. 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

May 10/2011 The export control classification with respect to this document is contained on the back of the locator. 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 OF
1. 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

May 10/2011 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21802

Revision No. 4: Mar 16/2012 Page 2 of 5

TURBOPROP ENGINE

PROPELLER SHAFT - REPLACEMENT OF
1. 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

May 10/2011 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21802

Revision No. 4: Mar 16/2012 Page 3 of 5

TURBOPROP ENGINE

PROPELLER SHAFT - REPLACEMENT OF
4. 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 3111119-02 120256

1T814* 3111119-02 121026

1T841 3111119-02 120584

1X127 3111625-02 124480

24A021 3123342-01 AR0009

25A830 3123342-01 123018

25A926 3123342-01 AR0021

26A057 3123342-02 AG0055

2N241 3111119-02 121082

2P801* 3111119-02 121245

2T122 3111119-02 120321

2X496* 3111625-02 124615

3L960 3038805 120217

3M657 3111119-02 120719

3R451 3111119-02 121085

3R727 3111119-02 123093

4X673 3115424-01 127031

5X698 3111119-02 121319

6W376 3111119-02 121060

6Y104* 3111119-02 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

May 10/2011 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21802

Revision No. 4: Mar 16/2012 Page 4 of 5

TURBOPROP ENGINE

PROPELLER SHAFT - REPLACEMENT OF
4. 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* 3111119-02 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

May 10/2011 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21802

Revision No. 4: Mar 16/2012 Page 5 of 5

TURBOPROP ENGINE

PROPELLER SHAFT - REPLACEMENT OF