# SER VICE BULLETIN

ENGINE
— DISK ASSEMBL Y , DRUM ROTOR, HIGH PRESSURE COMPRESSOR (HPC) AND BLADE LOCKS, 14TH, AND 15TH ST AGE
— INTRODUCTION OF, TO IMPROVE DURABILITY M O D E L A P P L I CA T I O N PW4164, PW4168, PW4168A B U L L E T I N I S S U E S E Q U E N C E PW4G-100 Series 72-241 A T A N U M B E R 72-35-00

U TC/ P &W P RO P R I E T A R Y I N F O R M A T I O N This document is the property of United T echnologies Corporation
— Pratt & Whitney (UTC/P&W). Y ou may not possess, use, copy or disclose this document or any information in it, for any purpose, including without limitation to design, manufacture, or repair parts, or obtain F AA or other government approval to do so, without UTC/P&W’ s express written permission. Neither receipt nor possession of this document alone, from any source, constitutes such permission. Possession, use, copying or disclosure by anyone without UTC/P&W’ s express written permission is not authorized and may result in criminal and/or civil liability
. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3). Co m p l i a n ce C ateg o ry 8 P &W D i stri b u ti o n Cod e 2639 November 15/1 1 

# PW4G-100-72-241 Page 1 of 19 Published in United States of AmericaS u m m a ry The purpose of this Service Bulletin is to introduce the Advantage70TM High Pressure Compressor (HPC) rear drum rotor assembly into the PW4164, PW4168, and PW4168A engine models. Some HPC rear drum rotor assemblies developed cracks in the blade loading and locking slots. The root cause of these cracks is Thermal Mechanical Fatigue (TMF). The Advantage70TM drum rotor assembly design is more durable and is less susceptible to TMF
. P l a n n i n g I n f o rm ati o n Ef fe cti v i ty D ata E n g i n e M od e l s Ap p l i ca b l e PW4164, PW4168, PW4168A Engine Serial Nos. P733301 thru P733692*
* This estimate of engine serial numbers will be revised, if necessary, when parts are installed in engines at Pratt & Whitney
. N OT E : The engine serial number ef fectivity data and its related engine model identification contained in this Service Bulletin are taken from the records of part(s) incorporation during initial manufacture. After initial engine manufacture, but before final delivery, P&W may change part(s) in the engine or change the model identification of the engine. Such action is recorded on F AA337 forms. T o find Service Bulletin PW4G-100-72-241 models that are applicable, the owner/operator of the engine must compare the Service Bulletin List supplied with the engine as sent from P&W and the List of Changes incorporated at the Airframer from F AA337 forms to the Service Bulletin PW4G-100-241 Ef fectivity section. Co n cu rre n t Re q u i re m e n ts This Service Bulletin must be done at the same time or after Reference 1 1, Service Bulletin No. PW4G-100-72-240. Re a so n 1. Problem: Some HPC rear drum rotor assemblies developed cracks in the blade loading and locking slots. 2. Cause: The root cause is determined to be TMF
. The TMF cracks are the result of thermal gradients and related high stresses in the rear of the HPC section. The high stresses are attributed to both the part geometry and shot peening. The loading and locking slot part geometry has structural features that when subjected to high thermal gradients, high stress zones are created. Shot peening adds a residual compressive stress which protects against low cycle fatigue conditions, however, shot peening can be a detriment and initiate TMF
. 3. Solution: Introduce the Advantage70TM HPC rear drum rotor assembly that is less susceptible to TMF into the PW4164, PW4168, and PW4168A engine models. The Advantage70TM rear drum rotor assembly has a dif ferent loading and locking slot geometry that is more durable and also incorporates a new shot peen specification. New blade locks are necessary to fit the dif ferent loading and locking slot design. Also, concurrent requirement Reference 1 1, Service Bulletin No. PW4G-100-72-240, November 15/1 1 

# PW4G-100-72-241 Page 2 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).which introduced the new 13th, 14th and 15th stage seals, reduces gas leakage and the associated thermal gradients which contributes to TMF
. D es c ri pt i o n Replace the HPC rear drum rotor assembly and the 14th and 15th stage blade locks. Co m p l i a n ce Category 8 Do when the operator thinks that the change is necessary because of experience with the parts being replaced. Ap p rova l D ata The part number changes and/or part changes specified in the Material Information section and Accomplishment Instructions of this Service Bulletin agree with the applicable Federal A viation Regulations and are F AA-Approved for the engine model(s) given. M a n p owe r No more man-hours are necessary when done at complete disassembly/assembly
. We i g h t D ata No Change. E l e ctri ca l Lo a d D ata Not Applicable. S of twa re Acco m p l i s h m e n t S u m m a ry Not Applicable. Refe re n ces 1. Turbojet Engine Standard Practices Manual, Part No. 585005. 2. PW4164, PW4168, PW4168A, PW4170 Turbofan Engines, Illustrated Parts Catalog, Part No. 51A343. 3. PW4164, PW4164-1D, PW4164C, PW4164C-1D, PW4164C/B, PW4164C/B-1D, PW4168, PW4168A, PW4168A-1D, PW4170 Turbofan Engines, Engine Manual, Part No. 51A342. 4. PW4000 Series Turbofan Engines, Engine Cleaning, Inspection And Repair (CIR) Manual, Part No. 51A357. 5. Service Bulletin No. PW4G-100-72-8; Engine
— Blades, 14th And 15th Stage High Pressure Compressor (HPC)
— Modification T o Provide Improved Platform Clearance And Blade Locking. Issue Sequence 72-8, PW4G-100 Series. 6. Service Bulletin No. PW4G-100-72-17; Engine
— Rotor And Stator Module, High Pressure Compressor (HPC)
— Replacement With Asymmetric V ane Pattern. Issue Sequence 72-17, PW4G-100 Series. 7. Service Bulletin No. PW4G-100-72-1 18; Engine
— Blades And Stators, 6th, 7th, 8th And 9th Stage HPC
— Modification Or Replacement Blades T o Zirconium Oxide Coated Tips And Shrouds With PW A 284-2 Rubstrips. Issue Sequence 72-1 18, PW4G-100 Series. 8. Service Bulletin No. PW4G-100-72-126; Engine
— Lock And Setscrew, HPC Blade 9th Thru 15th Stages
— Replacement Of For Ease Of Removal At Overhaul. Issue Sequence 72-126, PW4G-100 Series. November 15/1 1 

# PW4G-100-72-241 Page 3 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).9. Service Bulletin No. PW4G-100-72-188; Engine
— Disk, High Pressure Compressor (HPC) Drum Rotor Disk Assembly
— Replacement Of With A More Durable Rear Hub Scalloped Balance Flange Design. Issue Sequence 72-188, PW4G-100 Series. 10. Service Bulletin No. PW4G-100-72-219; Engine
— Modification Of, T o Incorporate The Advantage70TM Performance And Durability Upgrade Kit T o Improve Engine Reliability And Reduce Thrust Specific Fuel Consumption. Issue Sequence 72-219, PW4G-100 Series. 1 1. Service Bulletin No. PW4G-100-72-240; Engine
— Seal, 13Th, 14Th, And 15Th Stage, High Pressure Compressor (HPC)
— Replacement Of, And Introduction Of A New Shot Peen Specification, T o Improve Rear Drum Rotor Durability
. Issue Sequence 72-240, PW4G-100 Series. N OT E : References 5 thru 10 are shown to help find configurations in relation to this bulletin. P u b l i cat i o n s C h a n g e d PW4164, PW4168, PW4168A Turbofan Engines, Illustrated Parts Catalog, Part No. 51A343. 72-35-00, Figures 1, 8, and 9 PW4164, PW4168, PW4168A Turbofan Engines, Engine Manual, Part No. 51A342. 05-10-00 72-35-01 PW4000 Series Turbofan Engines, Engine Cleaning, Inspection And Repair (CIR) Manual, Part No. 51A357. 72-35-00 72-35-10 I n te rc h a n g e a b i l i ty Old and new parts are interchangeable only in full sets. I n f o rm at i o n i n t h e Ap p e n d i x Alternate Accomplishment Instructions (No) Progression Charts (Y es) Added Data (Y es) Revision to T able of Limits (Y es) Inspection Procedures (No)

November 15/1 1 

# PW4G-100-72-241 Page 4 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).M ate ri a l I n f o rm at i o n M ate ri a l
— Cost a n d A va i l a b i l i ty 1. Part prices were not available at the time of Service Bulletin publication. Contact Pratt & Whitney Spares Management & Logistics for firm quotations. 2. There is no kit provided to do this Service Bulletin. 3. Part availability information is provided in material data Instructions
— Disposition. I n d u stry S u p p o rt P rog ra m Not Applicable. T h e m ate ri a l d ata th at f o l l ows i s f o r e a c h e n g i n e . N OT E : It is possible to use the Chapter/Section and Figure/Item reference number shown below the old part number to find the part in the Illustrated Parts Catalog. Because there are many dif ferent configurations used, it is frequently necessary to show more than one group of parts. When this occurs, parts that are interchangeable are shown line-by-line only, unless this is shown dif ferently
. CA U T I O N : THE FOLLOWING MA TERIAL DA T A T ABLE(S) ARE ORGANIZED BY ILLUSTRA TED P ARTS CA T ALOG. ALL P ARTS IN THE T ABLE(S) MA Y OR MA Y NOT BE APPLICABLE TO ALL THE ENGINE MODELS SHOWN IN THE T ABLE HEADING. YOU MUST REFER TO THE APPROPRIA TE ILLUSTRA TED P ARTS CA T ALOG FOR ENGINE MODEL APPLICABILITY USING THE OLD P ART NUMBER (PN) AND CA T ALOG SEQUENCE NUMBER. F AILURE TO INST ALL THE P ART(S) IN THE CORRECT ENGINE MODEL MA Y RESUL T IN A CONFIGURA TION THA T IS NOT F AA APPROVED. T h e m ate ri a l d ata th at f o l l ows i s f o r e a c h e n g i n e . F o r PW4 1 64 , PW4 1 6 8 , PW4 1 6 8A E n g i n es : New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions
— Disposition For Engines That Do Not Incorporate Reference 10, Service Bulletin No. PW4G-100-72-219 Configuration 1: Drum Rotor Replacement In Axial Compressor Rotor Assembly, PN 58H678 58H678-002 1 COMPRESSOR ROTOR ASSY

— AXIAL 58H678 (72-35-00-1-90 A) (1)(NP)
50S813-01 1 * .DISK
— ASSY OF, HPC DRUM ROTOR 58H236-01 (72-35-00-1-190 B) (2)(A)(N)
50S154 8 * .LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * .LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR November 15/1 1 

# PW4G-100-72-241 Page 5 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions
— Disposition 50S813-01 1 * .DISK
— ASSY OF, HPC DRUM ROTOR 54H803-002 (72-35-00-1-190AB) (2)(A)(N)
50S154 8 * .LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * .LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * .DISK
— ASSY OF, HPC DRUM ROTOR 56H013-001 (72-35-00-1-190 A) (2)(A)(N)
50S154 8 * .LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * .LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) Configuration 2: Drum Rotor Replacement In Axial Compressor Rotor Assembly, PN 59H078 50S192 1 COMPRESSOR ROTOR ASSY

— AXIAL 59H078 (72-35-00-1-90 B) (1)(NP)
50S813-01 1 * .DISK
— ASSY OF, HPC DRUM ROTOR 58H236-01 (72-35-00-1-190 B) (2)(A)(N)
50S154 8 * .LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * .LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * .DISK
— ASSY OF, HPC DRUM ROTOR 54H803-002 (72-35-00-1-190AB) (2)(A)(N)
50S154 8 * .LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * .LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * .DISK
— ASSY OF, HPC DRUM ROTOR 56H013-001 (72-35-00-1-190 A) (2)(A)(N)

November 15/1 1 

# PW4G-100-72-241 Page 6 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions
— Disposition 50S154 8 * .LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * .LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) For Engines That Incorporate Reference 10, Service Bulletin No. PW4G-100-72-219 Configuration 3: Drum Rotor Replacement In Axial Compressor Rotor Assembly, PN 58H678-001 50S057 1 ROTOR AND ST A TOR ASSY
— HPC MODULE 57H077-001 (1)(NP)

52A520 1 .COMPRESSOR ROTOR ASSY

— AXIAL 58H678-001 (1)(NP)
50S813-01 1 * ..DISK
— ASSY OF, HPC DRUM ROTOR 58H236-01 (72-35-00-1-190 B) (2)(A)(N)
50S154 8 * ..LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * ..LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * ..DISK
— ASSY OF, HPC DRUM ROTOR 54H803-002 (72-35-00-1-190AB) (2)(A)(N)
50S154 8 * ..LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * ..LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * ..DISK
— ASSY OF, HPC DRUM ROTOR 56H013-001 (72-35-00-1-190 A) (2)(A)(N)
50S154 8 * ..LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * ..LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) Configuration 4: Drum Rotor Replacement In Axial Compressor Rotor Assembly, PN 59H078-001

November 15/1 1 

# PW4G-100-72-241 Page 7 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions
— Disposition 50S057 1 ROTOR AND ST A TOR ASSY
— HPC MODULE 57H077-001 (1)(NP)

52A520 1 .COMPRESSOR ROTOR ASSY

— AXIAL 59H078-001 (1)(NP)
50S813-01 1 * ..DISK
— ASSY OF, HPC DRUM ROTOR 58H236-01 (72-35-00-1-190 B) (2)(A)(N)
50S154 8 * ..LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * ..LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * ..DISK
— ASSY OF, HPC DRUM ROTOR 54H803-002 (72-35-00-1-190AB) (2)(A)(N)
50S154 8 * ..LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * ..LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) OR 50S813-01 1 * ..DISK
— ASSY OF, HPC DRUM ROTOR 56H013-001 (72-35-00-1-190 A) (2)(A)(N)
50S154 8 * ..LOCK ASSY
— HPC, 14STG 56H319 (72-35-00-8-40 B) (2)(A)(C) 50S153 8 * ..LOCK ASSY
— HPC, 15STG 56H324 (72-35-00-9-50 B) (2)(A)(C) M od i fi cat i o n a n d S p a res I n f o rm at i o n Estimated part prices are provided when they are available at time of publication. The Estimate of Unit Price is only for planning purposes and does not constitute a firm quotation. An asterisk (*) is shown where part pricing information was unavailable. In either case, contact Pratt & Whitney Spares Management & Logistics for firm quotations. Parts Modification Conditions (1) The new part can be obtained by modification of the old part as specified in the Accomplishment Instructions.
November 15/1 1 

# PW4G-100-72-241 Page 8 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).(2) The new part is a replacement part only, and cannot be obtained by modification of the old part. Spare Parts A vailability (A) The new part is available. (C) The old part will continue to be supplied. (N) The old part is not available. (NP) The part is an item that is usually not procured as a spare item. V endor Services or Special Components/Materials Not Applicable. M ate ri a l D ata f o r E a c h S p a re E n g i n e The material for each spare engine is as stated in the preceding material information section. Re i d e n ti fi e d P a rts Re i d e n t i fi e d P a rts D ata New PN Keyword Old PN 50S057 ROTOR AND ST A TOR ASSY
— HPC MODULE 57H077-001
58H678-002 COMPRESSOR ROTOR ASSY
— AXIAL 58H678
50S192 COMPRESSOR ROTOR ASSY
— AXIAL 59H078
52A520 COMPRESSOR ROTOR ASSY
— AXIAL 58H678-001
52A520 COMPRESSOR ROTOR ASSY
— AXIAL 59H078-001
N e cess a ry T oo l s No more Support Equipment is necessary. Ot h e r M ate ri a l I n f o rm at i o n D ata Not Applicable.

November 15/1 1 

# PW4G-100-72-241 Page 9 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).Acco m p l i s h m e n t I n stru ct i o n s F o r E n g i n es T h at D o N ot I n co rpo rate Refe re n ce 1 0 , S e r v i ce B u l l et i n N o . PW4 G - 1 0 0 - 7 2 -2 1 9 1. Replace the Drum Rotor Assembly, PN 58H236-01, PN 54H803-002 or PN 56H013-001 with PN 50S813-01. See Figure 1. 2. Replace the locks and setscrew assemblies as follows. See Figures 2 and 3. A. Replace eight 14th Stage Lock And Setscrew Assemblies, PN 56H319 with PN 50S154. B. Replace eight 15th Stage Lock And Setscrew Assemblies, PN 56H324 with PN 50S153. N OT E : When you do this Service Bulletin, you must do Reference 1 1, Service Bulletin No. PW4G-100-72-240 (seal replacement). 3. Reidentify the modified Compressor Rotor Assembly as specified in T able 1. Mark the new part number as specified in Reference 1, Standard Practices Manual, Chapter/Section 70-1 1-00, Class 44. See Figure 4. T a b l e 1 New PN Old PN 58H678-002 58H678 50S192 59H078 F o r E n g i n es T h at I n co rpo rate Refe re n ce 1 0 , S e r v i ce B u l l et i n N o . PW4 G - 1 0 0 - 7 2 -2 1 9 1. Replace the Drum Rotor Assembly, PN 54H803-002, PN 58H236-01 or PN 56H013-001 with PN 50S813-01. See Figure 1. 2. Replace the locks and setscrew assemblies as follows. See Figures 2 and 3. A. Replace eight 14th Stage Lock And Setscrew Assemblies, PN 56H319 with PN 50S154. B. Replace eight 15th Stage Lock And Setscrew Assemblies, PN 56H324 with PN 50S153. N OT E : When you do this Service Bulletin, you must do Reference 1 1, Service Bulletin No. PW4G-100-72-240 (seal replacement). 3. Reidentify the modified Compressor Rotor Assembly as specified in T able 2. Mark the new part number as specified in Reference 1, Standard Practices Manual, Chapter/Section 70-1 1-00, Class 44. See Figure 4. T a b l e 2 New PN Old PN 52A520 58H678-001 52A520 59H078-001

November 15/1 1 

# PW4G-100-72-241 Page 10 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).4. Reidentify the modified Rotor And Stator Assembly as specified in T able 3. Mark the new part number as specified in Reference 1, Standard Practices Manual, Chapter/Section 70-1 1-00, Class 39. See Figure 5. T a b l e 3 New PN Old PN 50S057 57H077-001

November 15/1 1 

# PW4G-100-72-241 Page 1 1 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).LOCA TION OF THE HPC REAR DRUM ROTOR ASSEMBL Y 72-35-00 FIGURE 1 November 15/1 1 

# PW4G-100-72-241 Page 12 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).LOCA TION OF THE 14TH ST AGE LOCK AND SETSCREW ASSEMBL Y 72-35-00 FIGURE 2 November 15/1 1 

# PW4G-100-72-241 Page 13 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).LOCA TION OF THE 15TH ST AGE LOCK AND SETSCREW ASSEMBL Y 72-35-00 FIGURE 3 November 15/1 1 

# PW4G-100-72-241 Page 14 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).MARKING LOCA TION OF THE COMPRESSOR ROTOR ASSEMBL Y FIGURE 4
November 15/1 1 

# PW4G-100-72-241 Page 15 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).MARKING LOCA TION OF THE ROTOR AND ST A TOR ASSEMBL Y FIGURE 5
November 15/1 1 

# PW4G-100-72-241 Page 16 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Ap p e n d i x P a rts P rog ress i o n T o S h ow t h e C h a n g e d P a rt i n Re l at i o n to Ot h e r P a rts

ROTOR AND ST A TOR ASSEMBL Y CHART A

COMPRESSOR ROTOR ASSEMBL Y CHART B

November 15/1 1 

# PW4G-100-72-241 Page 17 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).DRUM ROTOR DISK ASSEMBL Y CHART C

14TH AND 15TH ST AGE LOCK AND SETSCREW ASSEMBL Y CHART D Ad d e d D ata I n te rn a l Refe re n ce I n f o rm at i o n Revision No. Reference Document Origination Original EC09KA021 EC09KA021G EC09KA021X EC09KA021Y EC10KK044T KVG/MJS
Number values shown in parentheses adjacent to U.S. values are International System of units (SI) equivalents.

November 15/1 1 

# PW4G-100-72-241 Page 18 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not Subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).T o calculate part life, include the hours and/or cycles since the part was made. Use the total hours or cycles to calculate life limits that are the result of part modification, a part used in an engine with dif ferent thrust, or for some other reason. Rev i s i o n to T a b l e of L i m i ts Engine Manual(s), Chapter/Section 05-10-00, Revision 69, dated May 15, 2012 is scheduled to incorporate the Part Service Life Limits related to this Service Bulletin and will take precedence over the Service Bulletin. Rev i s i o n to T a b l e of L i m i ts l i fe cycl es i s a s f o l l ows : Model Part Number Part Name Life Limit (cycles) PW4164, PW4168, PW4168A 50S813-01 DISK
— ASSY OF, HPC DRUM ROTOR 14,900

November 15/1 1 

# PW4G-100-72-241 Page 19 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R Chapter 1, Part 734.3(b)(3).