BULLETIN INDEX LOCATOR

72-51-03

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF

MODEL APPLICATION

PW206B, PW206B2, PW206C, PW207C, PW207D, PW207D1, PW207D2, PW207E, PW207K

Compliance: CATEGORY 3, 4

Summary: Power Turbine (PT) disks made to certain heat codes and installed in a particular

turbomachinery assembly do not meet the maximum recommended service life. The

PT disk service life is reduced when operating in a particular temperature and

speed environment for engines using a specific vane match. Reidentify PT disks with

specific heat code and serial number to a new part number which has a reduced

maximum recommended service life allocated for all turbomachinery assembly

applications.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

Mar 01/2012 PW200-72-A28311

Revision No. 2: Jul 24/2012 Cover Sheet

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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

TURBOSHAFT ENGINE MODEL PW200

SUBJECT: Pratt & Whitney Canada Service Bulletin No. PW200-72-A28311, Rev. No. 2, dated Jul

24/2012 (P&WC S.B. No. A28311R2) PT DISK - INSPECTION/REIDENTIFICATION 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 revision is issued to remove:

v ‘‘Balancing Assembly’’ from title of Service Bulletin to read ‘‘PT Disk -

Inspection/Reidentification of’’, and

v ‘‘balancing assembly’’ from NOTE 2 of the Effectivity in para. 1.A. to read ‘‘....reidentify

PT disk in accordance with....’’.

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: Mar 01/2012

Revision No. 1: Mar 22/2012

Revision No. 2: Jul 24/2012

Pratt & Whitney Canada Corp.

1000, Marie-Victorin

Longueuil, Québec, Canada J4G 1A1

Tél. 450-677-9411

24 July 2012

P&WC S.B. No. A28311R2

1. Planning Information

A. Effectivity

PW206B Engines which are before and include Serial No. PCE-BB0126.

PW206B2 Engines which are before and include Serial No. PCE-BJ1120.

PW206C Engines which are before and include Serial No. PCE-BC0906.

PW207C Engines which are before and include Serial No. PCE-BH0611.

PW207D Engines which are before and include Serial No. PCE-BF0206.

PW207D1 Engines which are before and include Serial No. PCE-BL0203.

PW207D2 Engines which are before and include Serial No. PCE-BN0019.

PW207E Engines which are before and include Serial No. PCE-BG0165.

PW207K Engines which are before and include Serial No. PCE-BK0085.

NOTE: 1. The above effectivity list does not identify engines that have been converted

from one engine model to another via an engine conversion service bulletin.

To clarify the effectivity of converted engines, refer to the original engine

effectivity above. For the parts embodied during the engine conversion,

refer to conversion service bulletin.

NOTE: 2. For spare PT disks P/N 3044188-01 received prior to issue date of this

service bulletin, check spares for PT disk heat code and serial number listed

in Table 1 and reidentify PT disk in accordance with this service bulletin.

B. Concurrent Requirements

None.

C. Reason

(1) Problem

Power Turbine (PT) disks made to certain heat codes and installed in a particular

turbomachinery assembly do not meet the maximum recommended service life.

(2) Cause

Stress analysis showed that the mechanical properties of the PT disks made from

the drop hammer press forging method are not sufficient to meet the maximum

recommended service life when operating in a particular temperature and speed

environment for engines using a specific vane match.

(3) Solution

PT disks with specific heat code and serial number must be reidentified to a new

part number. These disks have a reduced maximum recommended service life

allocated for all turbomachinery assembly applications.

P&WC No. D7169A, D7169C

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 1 of 8 © 2012 Pratt & Whitney Canada Corp.

PRINTED IN CANADA

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF
1. Planning Information (Cont’d)

D. Description

Do a one time inspection of the PT disk for heat code and serial number. Reidentify

affected disks and replace as necessary in accordance with the accomplishment

instructions.

E. Compliance

PART A

CATEGORY 3 - P&WC recommends that all engines be inspected within 6 months for

PT disk P/N 3044188-01 with heat code and serial number listed in

Table 1.

PART B

Turbomachinery Assembly P/N 3058588 (Class 5 CT Vane) and PT disk

P/N 3044188-01 with heat code and serial number listed in Table 1:

CATEGORY 3 - Re-identify PT disk P/N 3044188-01 within 10,000 cycles or replace as

necessary.

NOTE: The part number of the Turbomachinery Assembly can be found at the power

section on the engine data plate.

PART B

Turbomachinery Assembly other than P/N 3058588 (Class 5 CT Vane) and PT disk

P/N 3044188-01 with heat code and serial number listed in Table 1:

CATEGORY 4 - Reidentify the PT disk P/N 3044188-01 the first time the engine or

module is at a maintenance base that can do the procedure,

regardless of the scheduled maintenance action or reason for engine

removal, or replace the disk as necessary.

NOTE: The part number of the Turbomachinery Assembly can be found at the power

section on the engine data plate.

F. Approval

D.O.T./D.A.A. approved.

G. Manpower

Estimate of 4.0 man-hours required to include this service bulletin at heavy maintenance.

No more man-hours are necessary to include this service bulletin at overhaul.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 2 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION 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

Applicable Maintenance Manual

Applicable Overhaul Manual

L. Publications Affected

Applicable Illustrated Parts Catalog

Applicable Maintenance Manual

M. Interchangeability and Intermixability of Parts

Interchangeability - Refer to Para. 2.D.

Intermixability - Not changed.

2. Material Information

A. Industry Support Information

Not applicable.

B. Material - Cost and Availability

Not applicable.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 3 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF
C. Material Necessary for Each Engine

The quantity of materials listed in this section is on a per Engine basis.

New P/N Keyword Old P/N Qty

Est. Unit

List Price

($US,

2012)

Instructions

Disposition

3075057-01 Disk Balancing Assy, Power

Turbine

3044246-01 Ref. NA (A)(B)

3072542-01 Ê Disk, Power Turbine 3044188-01 Rwk NA (A)(C)

(A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02):

The old or the new part can replace the old or the new part.

(B) P/N 3075057-01 is provided for reference only and is not procurable.

(C) See accomplishment instructions.

D. Reidentified Parts

The following list of parts can be reworked:

OLD P/N NEW P/N

P&WC P/N 3044188-01 P&WC P/N 3072542-01

E. Tooling - Price and Availability

Not applicable.

3. Accomplishment Instructions

A. PART A

(1) Inspect the engine logbook and all spares for PT disk P/N 3044188-01 with heat

code and serial number listed in Table 1.

(2) If you have PT disk P/N 3044188-01 with heat code and serial number listed in

Table 1, refer to 1.E (PART B) to determine compliance requirement before

reidentifying or replacing PT disk in accordance with 3.B (PART B).

(3) If you do not have PT disk P/N 3044188-01 with heat code and serial number listed

in Table 1, you have complied with the intent of this service bulletin.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 4 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF
3. Accomplishment Instructions (Cont’d)

B. PART B

(1) For PT disk P/N 3044188-01 with heat code and serial number listed in Table 1, do

as follows:

(a) You can re-identify the PT disk if it has less than 10,000 cycles (Ref. Maintenance

Manual, Airworthiness Limitations) otherwise replace the disk in accordance

with the applicable maintenance or overhaul manual.

NOTE: If re-identifying the disk, do not touch the disk heat code or serial

number. Make sure the old part number on the disk is not legible.

(b) To reidentify PT disk, use one of the methods that follow:

1 DOT Peening.

WARNING: USE EYE PROTECTION WHEN YOU WRITE WITH THE

DOT PEENING PROCEDURE.

a Use DOT peening procedure, 0.003 in. (0.08 mm) deep maximum,

and put lines or ‘‘X’’ characters thru the old part number.

b Use DOT peening procedure, 0.003 in. (0.08 mm) deep maximum,

and write the new part number in the location shown in Figure 1.

2 Electrolytic Etch, Deep

CAUTION: MAKE SURE THAT THE REMAINING ELECTROLYTE (ETCH

SOLUTION) IS FULLY NEUTRAL AFTER YOU WRITE ON THE

PART. ELECTROLYTE CAN CAUSE CORROSION ON THE

PART.

3 Use the electrolyte etch procedure, 0.002 in. (0.05 mm) deep maximum,

and put a line across the old part number.

4 Use the electrolyte etch procedure, 0.002 in. (0.05 mm) deep maximum,

and write the new part number in the location shown in Figure 1.

(c) Complete the record sheet and return to P&WC (Ref. Figure 2).

(d) Amend the LCF component list in the engine log book to reflect the new part

number of the PT disk.

C. Write accomplishment of P&WC S.B. No. 28311 in the applicable engine module log

book.

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 5 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF
RE−IDENTIFY

P/N 3072542−01

0.100 IN. (2.54 mm)

MIN. DISTANCE

BETWEEN MARKING

AND HOLES

PUT LINES OR "X"

CHARACTERS THROUGH

OLD PART NUMBER

PT DISK

C195007

Re-identification of PT Disk

Figure 1

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 6 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF
TO

P&WC CUSTOMER SERVICE

FAX No: 1 (450) 647−2888

Attn: Turboshaft, Customer Engineering

FROM

NAME:

COMPANY:

FAX NO.:

Date of SB Incorporation on Engine: 

A/C Registration: A/C S/N: 

ENGINE INFORMATION

Engine Model: Engine Serial Number: 

Engine Total Time Since New: Flight Hrs

E−MAIL: CFirst@pwc.ca

PT Disk S/N:

REMARKS

RETURN THIS FORM TO P&WC IF YOU HAVE A DISK

LISTED IN TABLE 1 OF THIS SERVICE BULLETIN

NOTE:

C164363

PT Disk - Record Sheet

Figure 2

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 7 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF
4. Appendix

TABLE 1, PT Disk P/N 3044188-01

HEAT CODE SERIAL # SERIAL # SERIAL #

EPAZW 57B859

57B860

57B861

57B862

57B863

57B864

57B865

57B866

57B867

57B868

57B869

57B870

57B871

57B872

EPBAY A00032MR

A00032MT

A00032MW

A00032MX

A00032MY

A00032N0

A00032N1

A00032N2

A00032XE

A00032XF

A00032XH

A00036W1

A00036W2

A00036W4

A0003HNH

A0003HNK

A0003HNM

A0003HNP

A0003HNR

A0003HNT

A0003HNW

A0006DD5

A0006DD6

EPBAZ A00063LL

A00063LN

A00063LR

A00063LT

A00063LW

A00063LX

A0006DD2

A0006DD3

A0006DD4

A0006DDA

A0006DDB

A000941T

A000941W

A000941X

A000941Y

A0009420

A0009421

A0009422

A0009423

A0009424

A0009NHX

A0009NHY

A0009NK0

A0009NK1

A0009NK2

A000AB3Y

EPBLE A000AB3P

A000AB3R

A000AB3T

A000AB3W

A000AB3X

A000AB40

A000AB41

A000AB42

A000AB43

A000AB44

A000B2E8

A000B2E9

A000B2EA

A000B2EB

A000B2EC

A000B2ED

A000B2EE

A000B2EF

A000B2EH

A000B2EK

PRATT & WHITNEY CANADA

ALERT SERVICE BULLETIN

P&WC S.B. No. A28311R2

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

Mar 01/2012 The export control classification with respect to this document is contained on the back of the locator. PW200-72-A28311

Revision No. 2: Jul 24/2012 Page 8 of 8

TURBOSHAFT ENGINE

PT DISK - INSPECTION/REIDENTIFICATION OF