# 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
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 1A1.1. 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** Page 1 of 4 © 2011 Pratt & Whitney Canada Corp. PRINTED IN CANADA TURBOFAN ENGINE COMBUSTION CHAMBER LINER ASSEMBLY- REPLACEMENT OF1. 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 OF2. 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 OF3. 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