BULLETIN INDEX LOCATOR

72-10-00

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION 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

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 plating repair

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 provides instructions to identify the location of repaired propeller shafts where

compliance to the nickel plating repair process cannot be ascertained and to

inspect these propeller shafts.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

Mar 08/2012 PW100-72-A21813

Revision No. 3: Mar 21/2012 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-A21813, Rev. No. 3, dated Mar

21/2012 (P&WC S.B. No. A21813R3) PROPELLER SHAFT - INSPECTION 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 Revise S/N 9M765 to read 9M755 in table 1.

v Revise S/N 7T434 to read 7T343 in table 2.

v Criteria for the repeat inspection modified.

EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT:

Operators that complied with prior revisions must perform repititive inspections within the

intervals as specified in Para. 3 C.

NOTE: A black bar in the left margin indicates a change in that line of text or figure.

REVISION HISTORY:

Original Issue: Mar 08/2012

Revision No. 1: Mar 13/2012

Revision No. 2: Mar 20/2012

Revision No. 3: Mar 21/2012

Pratt & Whitney Canada Corp.

1000, Marie-Victorin

Longueuil, Québec, Canada J4G 1A1

Tél. 450-677-9411

21 March 2012

P&WC S.B. No. A21813R3

1. Planning Information

A. Effectivity

PW118 Engines

PW118A Engines

PW118B Engines

PW119B Engines

PW119C Engines

PW120 Engines

PW120A Engines

PW121 Engines

PW121A Engines

PW123 Engines

PW123AF Engines

PW123B Engines

PW123C Engines

PW123D Engines

PW123E Engines

PW124B Engines

PW125B Engines

PW126 Engines

PW126A Engines

PW127 Engines

PW127B Engines

PW127E Engines

PW127F Engines

PW127G Engines

PW127H Engines

PW127J Engines

PW127M Engines

NOTE: 1. The applicable propeller shaft serial numbers are listed in Tables 1 and 2.

NOTE: 2. Refer to SB 21798 for incorporation requirements.

B. Concurrent Requirements

P&WC SB 21802 must be done in conjunction with this SB.

C. Reason

(1) Problem

There were two events where the propeller shaft was found with a circumferential

crack at the No. 19 bearing area. This condition was discovered while troubleshooting

an oil leak at the propeller shaft seal area.

P&WC No. DCR18033

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 1 of 15 © 2012 Pratt & Whitney Canada Corp.

PRINTED IN CANADA

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
1. Planning Information (Cont’d)

(2) Cause

The investigation has determined that the crack initiation resulted from a repair

process not consistent with the published P&WC Cleaning, Inspection and Repair

(CIR) Manual.

(3) Solution

Visually inspect the propeller shaft to confirm serial number and inspect the inner

bore for crack.

D. Description

This service bulletin provides instructions to identify the location of repaired propeller

shafts for which compliance to the nickel plating repair process cannot be ascertained and

to inspect for crack the inner bore of the propeller shafts identified in Tables 1 and 2

per the specified limits and repeat intervals.

E. Compliance

CATEGORY 3 - P&WC recommends to do this service bulletin within 150 flight hours

(EFH) or no later than April 30th, 2012.

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)

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 2 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
1. Planning Information (Cont’d)

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. 21802

P&WC S.B. No. 21798

Special Instruction No. 22-2012

Special Instruction No. 38-2011

Service Information Letter No. PW100-141

L. Publications Affected

None.

M. Interchangeability and Intermixability of Parts

Not applicable.

2. Material Information

A. Industry Support Information

Not applicable.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 3 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
2. Material Information (Cont’d)

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: Refer to the latest revision of SIL PW100-141 for additional background information

on this propeller shaft replacement.

A. Review engine records for RGB in your fleet to determine if a shaft S/N listed in Tables

1 and 2 is installed.

NOTE: 1. You may determine the propeller shafts S/N by verifying the RGB maintenance

record or by reading the serial number directly from the outside diameter of

the propeller shaft flange (Ref. Fig. 1) or by contacting the repair facility that

performed the last RGB shop visit.

NOTE: 2. If you cannot determine with certainty the S/N of the shaft, installed in any

one RGB, by reviewing the records, you must visually verify the propeller

shaft S/N on the outside diameter of the propeller shaft flange (Ref. Fig. 1).

B. If a propeller shaft, listed in Tables 1 or 2, is in your fleet, complete the record sheet

attached (Ref. Fig. 2) for each RGB where these shafts are located and send to the

following dedicated e-mail address: gp.pwc.regional.turboprop@pwc.ca.

C. If the propeller shaft is listed in table 1 or table 2, inspect the inner bore area b (Ref

figure 1) for crack within 50 flight hours (EFH) by visual inspection or by an ultrasonic

inspection.

NOTE: Inspection intervals depends on the method used. You may elect to change

from one to the other provided that the repeat intervals are met.

(1) For visual inspection, remove the propeller or remove the propeller pitch change

actuator per the AMM to access the inside diameter of the propeller shaft and

visually inspect area b (Ref. Figure 1) for visible crack and/or obvious damage.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 4 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
3. Accomplishment Instructions (Cont’d)

(a) Perform a repeat visual inspection within 50 EFH and repeat within every 10

EFH intervals thereafter until the propeller shaft is replaced per SB 21798.

(b) Report findings to P&WC (Ref. Fig. 2)

(2) For ultrasonic inspection, remove the propeller and inspect the propeller shaft for

crack in accordance with SI 22-2012.

NOTE: 1. Ultrasonic inspection per SI 22-2012 can be accomplished only by

personnel certified to a Level II for ultrasonic inspection in accordance

with NAS 410 or an equivalent internationally recognized certification;

provided that they have successfully completed specific training from

a trainer approved by P&WC.

NOTE: 2. Contact your local Field service Representative (FSR) to coordinate the

logistic to proceed with the ultrasonic inspection. You may also contact

P&WC at e-mail: regional.turboprop@pwc.ca for assistance.

(a) Repeat the ultrasonic inspection at interval not to exceed 1000 EFH until the

propeller shaft is replaced per SB 21798.

D. If a crack is found, replace the propeller shaft prior to next flight.

E. Write accomplishment of P&WC SB No. 21813.

4. Appendix

A. Refer to Tables 1 and 2 for Propeller Shaft S/N.

NOTE: 1. The propeller shaft part numbers in Tables 1 and 2 are provided for reference

only since the part number may be different due to subsequent modifications.

It is the S/N that requires verification as it remains unchanged.

NOTE: 2. P&WC does not have a complete record of the current RGB serial numbers in

which propeller shafts, listed in Tables 1 and 2, may be installed.

TABLE 1, Propeller Shaft Replacement (listed by Shaft S/N)

Shaft S/N Shaft P/N

12A686 3115424-01

12A689* 3115424-01

14A317 3115424-01

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 5 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 1, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

14A318 3115424-01

14A319 3115424-01

14A768* 3111625-01

15A999* 3115424-01

1N602* 3111625-01

1X340 3115424-01

1X342* 3115424-01

1X343 3115424-01

1X347 3115424-01

23A807 3111625-01

25A597 3115424-01

4T382 3111625-01

4X663 3115424-01

4X665 3115424-01

4X667 3115424-01

4X674 3115424-01

5N251* 3111625-01

6W387 3111625-01

6W668 3111625-01

6X229 3115424-01

6X240* 3115424-01

6X245* 3115424-01

6X248 3115424-01

6Y192 3115424-01

6Y198 3115424-01

6Y209 3115424-01

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 6 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 1, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

6Y228* 3115424-01

7T116* 3111625-01

7W762 3115424-01

7W935* 01R3045522-01

7W938 3111625-01

7Y416 3115424-01

7Y420 3115424-01

7Y422* 3115424-01

9M755 3045522-01

9Y857 3115424-01

A0000278 3115424-02

A00003AT 3115424-02

A0009PKC 3045522-01

A0015HH9* 3045522-01

EAAA000E990 3045522-01

Note 1 : * Propeller shaft already removed from service.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 7 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 2, Propeller Shaft Replacement (listed by Shaft S/N)

Shaft S/N Shaft P/N

0000D80 3123342-01

000BAK7 01R3123342-01

10A284 3111627-01

10A349 3111119-02

13A023 3111625-02

13A071 01R3045521-01

13A075 01R3123342-01

14A753* 3119949-02

14A754* 3119949-02

15A811 3113660-01

18A131 3111627-01

1K018* 3038805

1N100 3111625-02

1N586 3111119-02

1T825* 3111119-02

1W758 3111625-02

1X016* 3111119-02

1X101 3111627-01

22A224* 3111119-02

23A642 3111627-01

25A650 3123342-01

25A669* 3123342-01

25A681 3123342-01

25A732 3123342-01

25A924 3123342-01

25A925 3123342-01

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 8 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 2, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

25A991 3123342-01

26A119 01R3123342-01

26A386 3123342-01

2N202 3111627-01

2N215 3111119-02

2N240* 3111119-02

2P161 3111119-02

2P805* 3111119-02

2P819 3111119-02

2T125 3111119-02

2T133 3111119-02

2T150 01R3123342-01

2T188 3111625-02

2T818 3111119-02

2T834 3111119-02

2T974 3111119-01

2X264 3111119-02

2X326 3111119-02

2X354 3111119-02

2X357 3111119-02

3L509* 3038805

3L957 3038805

3M656 3111119-01

3M773 3111119-02

3R728 3111119-02

3R738 3111119-02

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 9 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 2, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

3R746 3111119-02

3R832* 3111119-01

3R834 3111119-01

3R853 3111119-03

4T525 3111119-02

4T538 3111119-01

4T641 3111627-01

4T709* 3111119-02

4T764 3111627-01

4X411 3111119-02

4X413* 3111119-02

4X416 3111119-02

4X499 3111119-02

55A420 3123342-01

5L684 3107036-02

5L693 3107036-02

5L694 3038805

5L754 3038805

5L876 3107036-02

5N755 3111119-02

5N787 3111119-02

5N809 3111119-01

5X683 3111119-02

5X699 3111119-02

69A819 3123342-01

6L444* 3111119-02

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 10 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 2, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

6L451 3111119-02

6T750 3111119-02

6T969 3111119-02

6T970 3111119-02

6T973* 3111119-02

6T977 3111119-02

6T984 3111119-02

6W520 3113660-01

6W688 3111625-02

6X616 3111119-02

6X618 3111119-02

6X631 3111625-02

6Y628 3111627-01

7A173 3123342-01

7T425 3111119-02

7T343 3111119-02

7W396 3111119-02

7W497 3111119-01

7W500 3111119-02

8K307* 3107036-02

8K505 3038805

8M810 3111119-01

8M817* 01R3123342-01

8M818 3111119-03

8W093 3111119-01

8W191* 3111119-02

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 11 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 2, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

8W201 3111625-02

8W646 3111119-02

8W647 3111119-02

8X100 3111119-03

8Y281 3111119-02

8Y671 3113660-01

9K436 3107036-02

9K947* 3107036-02

9L555 3111119-02

9P949* 3111119-02

9P957 3111119-02

9W711 3111627-01

9W738* 3111119-02

A00000DM 3123342-01

A00000DR* 3123342-01

A00000LC 3123342-01

A0000166 3123342-01

A0000168 01R3123342-01

A0000K57 3045522-02

A0001X11 3119949-02

A0002LK8 3119949-02

A0003RYA 3045519-01

A00058AX 01R3123342-01

A0005P57 3123342-01

A0005P5E 3123342-02

A0006RCB 3123342-01

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 12 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
4. Appendix (Cont’d)

TABLE 2, Propeller Shaft Replacement (listed by Shaft S/N) (Cont’d)

Shaft S/N Shaft P/N

A001081K* 01R3123342-01

A001277P 3123342-01

A0012CK4 3123342-01

A0014B54 01R3123342-01

EAAA000M662 3045522-02

Note 1 : * Propeller shaft already removed from service.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 13 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
S/N MARKING

LOCATION

B

TYPICAL

C195776

Propeller Shaft S/N - Marking Location

Figure 1

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 14 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF
OPERATOR / COMPANY NAME:

PHYSICAL ADDRESS:

CITY:

ZIP CODE:

COUNTRY:

CONTACT PERSON FULL NAME:

TITLE:

PHONE NUMBER:

RESULT OF PROP SHAFT

BORE INSPECTION:

RGB S/N PROP SHAFT

P/N

PROP SHAFT

S/N

RGB TSO or

SINCE LAST REPAIR

NAME OF SHOP THAT

PERFORMED LAST

RGB SHOP VISIT

EXPECTED DATE OF

NEXT SHOP VISIT

Send the completed form to the following e−mail address: regional.turboprop@pwc.ca

E−MAIL ADDRESS:

C196386

Record Sheet

Figure 2

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A21813R3

P&WC Proprietary Information. Subject to the restrictions on the back of the locator

Mar 08/2012 The export control classification with respect to this document is contained on the back of the locator. PW100-72-A21813

Revision No. 3: Mar 21/2012 Page 15 of 15

TURBOPROP ENGINE

PROPELLER SHAFT - INSPECTION OF