BULLETIN INDEX LOCATOR

72-40-01

TURBOFAN ENGINE

COMBUSTION CHAMBER LINER ASSEMBLY- REPLACEMENT OF

MODEL APPLICATION

PW610F-A

Compliance: CATEGORY 6

Summary: There is a possibility of engine surge at high altitudes also, the manufacturability,

repairability, producibility and durability of the combustion chamber liner assembly can

be improved. This is because: 1) the carbon deposits at high altitudes and high

bleed conditions can dislodge and may block the high pressure turbine vane. 2) the

liner assembly is a one-piece configuration. Replace the combustion chamber liner

assembly with one that has inner and outer liner assemblies that include heat

shields.

PRATT & WHITNEY CANADA

SERVICE BULLETIN

P&WC S.B. No. 60077

Jun 01/2011 PW600-72-60077

Cover Sheet

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This bulletin contains proprietary information of Pratt & Whitney Canada Corp. (′′P&WC′′), which

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providing applicable information regarding the proper use, maintenance, inspection, repair, servicing

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material, process, modification, configuration change or repair, or obtain FAA or other government

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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.
1. Planning Information

A. Effectivity

PW610F-A Engines which are before and include Serial No. PCE-LA0583.

B. Concurrent Requirements

None.

C. Reason

(1) Problem

There is a possibility of engine surge at high altitudes.

The manufacturability, repairability, producibility and durability of the combustion

chamber liner assembly can be improved.

(2) Cause

Carbon deposits at high altitudes and high bleed conditions can dislodge and may

block the high pressure turbine vane.

The liner assembly is a one-piece configuration.

(3) Solution

Replace the combustion chamber liner assembly with one that has inner and outer

liner assemblies which are held by cast heat shields. This requires the

replacement of the floating collars to suit.

D. Description

Replace the combustion chamber liner assembly with a new one.

E. Compliance

CATEGORY 6 - P&WC recommends to do this service bulletin when the subassembly

(i.e. module, accessories, components, or build groups) is disassembled

and access is available to the necessary part. Do all spare

subassemblies.

F. Approval

D.O.T./D.A.A . Approved.

G. Manpower

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

P&WC No. E4947A

PRATT & WHITNEY CANADA

SERVICE BULLETIN

P&WC S.B. No. 60077

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

Jun 01/2011 PW600-72-60077

© 2011 Pratt & Whitney Canada Corp. Page 1 of 4 PRINTED IN CANADA

TURBOFAN ENGINE

COMBUSTION CHAMBER LINER ASSEMBLY- REPLACEMENT OF
1. Planning Information (Cont’d)

H. Weight and Balance

The engine weight will decrease by 0.34 pounds (0.15 kgs).

I. Electrical Load Data

Not applicable.

J. Software Accomplishment Summary

Not applicable.

K. References

PW610-FA Maintenance Manual P/N 3059982

PW610-FA Overhaul Manual P/N 3059983

L. Publications Affected

Applicable PW600 Technical Manuals

M. Interchangeability and Intermixability of Parts

Interchangeability - Refer to Para. 2.C.

Intermixability - Not changed.

2. Material Information

A. Industry Support Information

Not applicable.

B. Material - Price and Availability

You can get the procurable parts listed in Para. 2.C. from any Pratt & Whitney Canada

Parts Distribution Center.

The estimated total cost of new parts needed to replace old parts is TBA (US, 2011).

PRATT & WHITNEY CANADA

SERVICE BULLETIN

P&WC S.B. No. 60077

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

Jun 01/2011 PW600-72-60077

Page 2 of 4

TURBOFAN ENGINE

COMBUSTION CHAMBER LINER ASSEMBLY- REPLACEMENT OF
2. Material Information (Cont’d)

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,

2011)

Instructions

Dispositions

35C5589-01 Liner Assembly, Combustion

Chamber

35C4034-01 1 59154.00 (A)

35C4756-01 .Liner, Combustion

Chamber, Outer, Assy of

1 23373.00 (B)

35C3734-01 .Liner, Combustion

Chamber, Inner, Assy of

1 17530.00 (B)

35C5588-01 .Shield - Heat, Fuel Nozzle

Boss, Assy of

13 1110.00 (B)

35C4633-01 .Collar, Floating, Fuel

Nozzle

13 275.00 (B)

MS9549-09 .Washer - Flat 52 0.46 (B)

ST3030-09 .Nut Option (IC) 52 4.22 (B)

(A) TWO WAY INTERCHANGEABLE (ATA200 Explanation Code 02): The old or the new parts

can replace the old or the new part.

(B) NOT INTERCHANGEABLE - (ATA 200 Explanation Code 03): The old part must replace the

old part; the new part must replace new part.

D. Tooling - Price and Availability

Not applicable.

3. Accomplishment Instructions

A. If the engine is installed on the aircraft, do steps B. and C. before removing parts. If the

engine is at an Overhaul facility, omit steps B. and C. and proceed with step D.

B. Do a borescope inspection to determine the condition of the HP Turbine blades (Ref.

Maintenance Manual, Chapter 72-00-00).

C. Do a power assurance check (Ref. Maintenance Manual, Chapter 71-00-00).

D. Remove the parts listed under old P/N in Para. 2.C., Material Information. Refer to the

instructions in the Maintenance Manual or Overhaul Manual as applicable (Ref. Para

1.K.).

PRATT & WHITNEY CANADA

SERVICE BULLETIN

P&WC S.B. No. 60077

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

Jun 01/2011 PW600-72-60077

Page 3 of 4

TURBOFAN ENGINE

COMBUSTION CHAMBER LINER ASSEMBLY- REPLACEMENT OF
3. Accomplishment Instructions (Cont’d)

E. Install the parts listed under New P/N in Para. 2.C., Material Information. Refer to the

instructions in the Maintenance Manual or Overhaul Manual as applicable (Ref. Para

1.K.).

F. Write accomplishment of P&WC S.B. No. 60077 in the applicable engine log book.

4. Appendix

Not applicable.

PRATT & WHITNEY CANADA

SERVICE BULLETIN

P&WC S.B. No. 60077

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

Jun 01/2011 PW600-72-60077

Page 4 of 4

TURBOFAN ENGINE

COMBUSTION CHAMBER LINER ASSEMBLY- REPLACEMENT OF