# ALERT SER VICE BULLETIN

ENGINE

— DISK ASSEMBL Y , DRUM ROTOR, HIGH PRESSURE COMPRESSOR (HPC)

— EDDY CURRENT AND UL TRASONIC INSPECTION OF THE 10TH ST AGE DISK FOR CRACKS

M O D E L AP P L I CA T I O N PW4164, PW4168, PW4168A, PW4168A-1D, PW4170

B U L L ET I N I S S U E S E Q U E N C E PW4G-100 Series A72-255

A T A N U M B E R 72-35-00

U TC/P&W P RO P R I ET AR Y I N F O RMA 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 Categ o ry 5, 6 P&W D i stri b u ti o n Cod e 2639 August 31/15 

# PW4G-100-A72-255 Page 1 of 15
Published in United States of AmericaS u m m a ry The purpose of this Alert Service Bulletin is to provide instructions to do a repetitive inspection of the 10th stage disk web of the High Pressure Compressor (HPC) front drum rotor disk assembly for cracks. A list of suspect 10th stage disk part numbers is included in Appendix A, T able 1. A Non-Destructive Inspection Procedure (NDIP) for either an Eddy Current Inspection (ECI) (Part A) or Ultrasonic Inspection (UTI) (Part B) must be accomplished at engine disassembly

. P l a n n i n g I nf o rm ati o n Ef fectivity D ata E n g i n e M od e l s Ap p l i ca b l e PW4164, PW4168, PW4168A, PW4168A-1D, PW4170 Engine Serial No.

— All engines with the suspect 10th stage disk serial numbers as specified in Appendix A, T able 1. This Service Bulletin also applies to engines converted to the PW4164-1D, PW4168-1D, PW4168A-1D, PW4170 models by Service Bulletin PW4G-100-72-220. Co n cu rre nt Req u i re m e nts There are no concurrent requirements. Reaso n 1. Problem: During HPC overhaul of a PW4056, a crack measuring approximately 20 inches (508 mm) in length was found in the 10th stage disk web of the front drum rotor disk assembly

. The 10th stage disk crack was due to Low Cycle Fatigue (LCF) that initiated from surface scratches. The same configuration is used in PW4170 engines and the engines that incorporate Reference 5, Service Bulletin No. PW4G-100-72-220. 2. Cause: The root cause of the LCF crack was a manual polishing procedure that was, at one time, performed at the manufacturing stage and caused surface scratches on the part. The suspect population for the PW4000-100 series engine models is as follows: A. All 10th stage disks produced from 1985 through January 1999. B. Disks from January 1999 through 2002 that had manual polish accomplished during manufacture. 3. Solution: Do a repetitive non-destructive inspection of the 10th stage disk for cracks. A. Part A

— ECI as specified in Reference 7, NDIP-1 155 at every HPC overhaul. B. Part B

— UTI as specified in Reference 6, NDIP-1 154 at every High Pressure Turbine (HPT) or Low Pressure Turbine (LPT) removal. (1) Remove any 10th stage disk from service that doesn’t meet the acceptance criteria as specified in the inspection procedures above. D escri pti o n Do an inspection of the suspect 10th stage disk of the HPC front drum rotor disk assembly for cracks. Co m p l i a n ce Part A: August 31/15 

# PW4G-100-A72-255 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).Category 6 Do when the subassembly (e.g. modules, accessories, components, build groups) is disassembled suf ficiently to give access to the changed part and to all changed spare parts. Part B: Category 5 Do when the engine is disassembled suf ficiently to give access to the changed subassembly (i.e., module, accessories, components, build groups) and to all changed spare subassemblies. Ap p rova l D ata The times between inspections specified in Compliance and the inspection procedures specified in the Accomplishment Instructions agree with the applicable Federal A viation Regulations and are F AA-Approved for the engine model(s) given. The aircraft T ype Certificate holder has been informed of this inspection. M a n powe r The estimate of man-hours of labor directly necessary to do the intent of this Service Bulletin are as follows:
1. Necessary to do the ECI (Part A).

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0 2. Necessary to do the UTI (Part B).

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 We i g ht D ata No Change. E l ectri ca l Load D ata Not Applicable. Sof 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, PW4168-1D, 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-100-72-220; Engine

— Conversion Of A PW4164, PW4168, Or PW4168A Engine T o A PW4164-1D, PW4168-1D, PW4168A-1D, Or PW4170 Engine. Issue Sequence 72-220, PW4G-100 Series. 6. NDIP-1 154, PW4000 High Pressure Compressor (HPC) Drum Rotor 10th Stage Disk Web Ultrasonic Inspection (Module/Full HPC Drum Level).

August 31/15 

# PW4G-100-A72-255 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).7. NDIP-1 155, PW4000 High Pressure Turbine FWD Drum, 10th Stage Semi-Automated Eddy Current Inspection (Disassembled Component). N OT E : Reference 5 is shown to help find non-production configurations that may incorporate this bulletin. P u b l i cati o n s C h a n g ed 1. PW4164, PW4168, PW4168A, PW4170 Turbofan Engines, Illustrated Parts Catalog, Part No. 51A343, Chapter/Section 72-35-00. I n te rch a n g ea b i l ity Not Applicable. I nf o rm ati o n i n th e Ap pe n d ix Alternate Accomplishment Instructions (No) Progression Charts (No) Added Data (Y es) Revision to T able of Limits (No) Inspection Procedures (No)

August 31/15 

# PW4G-100-A72-255 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 nf o rm ati o n M ate ri a l

— Cost a n d A va i l a b i l ity 1. There is no kit provided to do this Service Bulletin. 2. Part availability information is provided in material data Instructions

— Disposition. I n d u stry S u p po rt P rog ra m Not Applicable. Th e m ate ri a l d ata th at f o l l ows i s f o r each 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

. CAU 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. Th e m ate ri a l d ata th at f o l l ows i s f o r each e n g i n e

. Fo r PW4 1 64 , PW4 1 6 8 , PW4 1 68A, PW4 1 6 8A

- 1 D , PW4 1 70 E n g i n es : New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions

— Disposition 1 DISK

— ASSY OF, HPC DRUM ROTOR 53H976-01 (72-35-00-1-120) (4)(X)

1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

OR 1 DISK

— ASSY OF, HPC DRUM ROTOR 53H976-101 (72-35-00-1-120AC) (4)(X)

1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

OR 1 DISK

— ASSY OF, HPC DRUM ROTOR 54H816-01 (72-35-00-1-120 A) (4)(X)

August 31/15 

# PW4G-100-A72-255 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 1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

OR 1 DISK

— ASSY OF, HPC DRUM ROTOR 54H816-101 (72-35-00-1-120AB) (4)(X)

1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

OR 1 DISK

— ASSY OF, HPC DRUM ROTOR 55H106-01 (72-35-00-1-120 B) (4)(X)

1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

OR 1 DISK

— ASSY OF, HPC DRUM ROTOR 55H106-101 (72-35-00-1-120AA) (4)(X)

1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

OR 1 DISK

— ASSY OF, HPC DRUM ROTOR 50S106-01 (72-35-00-1-120 C) (4)(X)

1 .DISK

— 10TH ST AGE 53H976-06 (72-35-00-1-126) (4)(X)

M od ifi cati o n a n d S pa res I nf o rm ati 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 (4) Do an inspection as specified in the Accomplishment Instructions. Spare Parts A vailability (X) See Reference 2, Illustrated Parts Catalog for applicable replacement parts. V endor Services or Special Components/Materials Not Applicable.
August 31/15 

# PW4G-100-A72-255 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).M ate ri a l D ata f o r E ach S pa 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 tifi ed Pa rts Not Applicable. N ecessa ry T oo l s There are tool kit numbers PW A 86684 (Ultrasonic) and PW A 86686 (Eddy Current) to do this Alert Service Bulletin. Contact your Pratt & Whitney T ool Support Services sales manager directly or by e-mail to pwtools@pw.utc.com for assistance with new PW A tool kits and calibrations. N ew S u p po rt E q u i p m e nt th at i s n ecessa ry Kit Number Nomenclature Units Per Engine PW A 86684 Ultrasonic Inspection Kit 1 PW A 86686 Eddy Current Inspection Kit 1
N OT E : * Detail tool listing for UTI is found in Reference 6, NDIP1 154.
N OT E : * Detail tool listing for ECI is found in Reference 7, NDIP1 155. N OT E : All queries regarding necessary support equipment and borescope equipment equivalency can be directed to Pratt & Whitney Non Destructive Evaluation (NDE) through the MS Dynamics system or Pratt & Whitney Global Operations Center (24 hour help desk). Oth e r M ate ri a l I nf o rm ati o n D ata Not Applicable.

August 31/15 

# PW4G-100-A72-255 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).Acco m p l i s h m e nt I n stru cti o n s Pa rt A : E D DY C U R R E N T I N S P E CT I O N ( E C I ) 1. Do the ECI procedure as specified in Reference 7, NDIP-1 155 on the suspect 10th Stage Disk, PN 53H976-06 as specified in Appendix A, T able 1 and inspect for cracks. See Figure 1, Sheets 1 and 2. N OT E : T o obtain a copy of the ECI procedure as specified in Reference 7, NDIP-1 155 please contact Pratt & Whitney Non Destructive Evaluation (NDE) through the MS Dynamics system or Pratt & Whitney Global Operations Center (24 hour help desk). 2. Acceptance/Rejection criteria has been provided in the ECI procedure as specified in Reference 7, NDIP-1 155. 3. Rejected 10th Stage Disk, PN 53H976-06 must be removed from service and may be replaced as specified in Reference 4, CIR Manual, Chapter/Section 72-35-07, Repair-04.
Pa rt B : U L T RAS O N I C I N S P E CT I O N ( U T I ) 1. During HPT or LPT removal, do the procedure that follows: A. Remove the LPT as specified in Reference 3, Engine Manual, Chapter/Section 72-00-53, Removal-01. N OT E : UTI can be accomplished with removal of LPT only

. N OT E : HPT nut lock needs to be removed if accomplishing the inspection without HPT removal. B. Remove the HPT as specified in Reference 3, Engine Manual, Chapter/Section 72-00-52, Removal-01. C. Do the UTI procedure as specified in Reference 6, NDIP-1 154 on the suspect 10th Stage Disk, PN 53H976-06 as specified in Appendix A, T able 1 and inspect for cracks. See Figure 1, Sheets 1 and 2. N OT E : T o obtain a copy of the UTI procedure as specified in Reference 6, NDIP-1 154 please contact Pratt & Whitney Non Destructive Evaluation (NDE) through the MS Dynamics system or Pratt & Whitney Global Operations Center (24 hour help desk). D. Acceptance/Rejection criteria has been provided in the UTI procedure as specified in Reference 6, NDIP-1 154. E. Rejected 10th Stage Disk, PN 53H976-06 must be removed from service and may be replaced as specified in Reference 4, CIR Manual, Chapter/Section 72-35-07, Repair-04. N OT E : Operators may choose to inspect the 10th Stage Disk, PN 53H976-06 per ECI procedure as specified in Reference 7, NDIP-1 155 following a part rejection via UTI procedure as specified in Reference 6, NDIP-1 154 to confirm part rejection.

August 31/15 

# PW4G-100-A72-255 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).LOCA TION OF THE DRUM ROTOR DISK ASSEMBL Y 72-35-00 FIGURE 1, SHEET 1

August 31/15 

# PW4G-100-A72-255 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).INSPECTION OF THE 10TH ST AGE DISK FIGURE 1, SHEET 2

August 31/15 

# PW4G-100-A72-255 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).Ap pe n d ix Ad d ed D ata I n te rn a l Refe re n ce I nf o rm ati o n
Revision No. Reference Document Origination Original EA14KC489A KG/IEL Number values shown in parentheses adjacent to U.S. values are International System of units (SI) equivalents. Ap pe n d ix A T a b l e 1

— S e ri a l N u m be rs f o r 1 0th Stag e D i s k, P N 53 H 9 76

-06 CENCBA4504 CENCAH4233 CENCAK9741 CENCAM3124 CENCAM3157 CENCAN9248 CENCBE5829 CENCAH4239 CENCAH4253 CENCAM3126 CENCAM3150 CENCAN9253 CENCA T7228 CENCAH4237 CENCAK9745 CENCAM3123 CENCAM3143 CENCAP3363 C210AA0127 CENCAH4236 CENCAM3109 CENCAM3125 CENCAM3146 CENCAP3364 C210AA0126 CENCAH4229 CENCAH4259 CENCAM3133 CENCAM3169 CENCAN9258 CENCAH4213 CENCAH4240 CENCAK9740 CENCAM3132 CENCAM3158 CENCAP3362 CENCAH4212 CENCAH4235 CENCAK9747 CENCAM3137 CENCAM3166 CENCAN9259 CENCAH421 1 CENCAH4238 CENCAK9748 CENCAM3135 CENCAM3173 CENCAP5120 CENCAH4216 CENCAH4244 CENCAM31 10 CENCAM3139 CENCAN9241 CENCAP5122 CENCAH4214 CENCAH4243 CENCAK9743 CENCAM3131 CENCAM3172 CENCAP5121 CENCAH4219 CENCAH4247 CENCAK9746 CENCAM3136 CENCAM3171 CENCAP5128 CENCAH4218 CENCAH4249 CENCAK9749 CENCAM3141 CENCAM3175 CENCAN9251 CENCAH4215 CENCAH4250 CENCAK9744 CENCAM3144 CENCAM3176 CENCAP5124 CENCAH4217 CENCAH4241 CENCAM31 12 CENCAM3138 CENCAN9242 CENCAN9257 CENCAH4221 CENCAH4245 CENCAM31 14 CENCAM3122 CENCAN9246 CENCAN9256 CENCAH4222 CENCAH4242 CENCAM31 16 CENCAM3142 CENCAM3177 CENCAP3365 CENCAH4220 CENCAH4246 CENCAM31 1 1 CENCAM3145 CENCAN9243 CENCAP5127 CENCAH4227 CENCAH4248 CENCAM31 15 CENCAM3148 CENCAN9245 CENCAP5126 CENCAH4223 CENCAH4252 CENCAM31 13 CENCAM3149 CENCAN9247 CENCAP5123 CENCAH4228 CENCAH4251 CENCAM31 18 CENCAM3134 CENCAM3178 CENCAN9255 CENCAH4226 CENCAH4254 CENCAM3121 CENCAM3140 CENCAN9244 CENCAP5125 CENCAH4225 CENCAH4255 CENCAM31 19 CENCAM3147 CENCAN9252 CENCAP5130 CENCAH4224 CENCAH4257 CENCAM3120 CENCAM3168 CENCAN9249 CENCAP5129

August 31/15 

# PW4G-100-A72-255 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).CENCAH4231 CENCAH4258 CENCAM31 17 CENCAM3170 CENCAN9254 CENCAP5131 CENCAH4234 CENCAH4256 CENCAM3127 CENCAM3167 CENCAM3174 CENCAP5133 CENCAH4232 CENCAH4260 CENCAM3128 CENCAM3165 CENCAN9250 CENCAP5134 CENCAP5136 CENCAR4725 CENCAS3728 CENCA T0464 CENCA T7218 CENCA W0750 CENCAP5137 CENCAR4726 CENCAS3724 CENCA T0460 CENCA T7224 CENCA W0743 CENCAP5135 CENCAR6751 CENCAS3730 CENCA T0465 CENCA T7221 CENCA W0751 CENCAP5139 CENCAR6750 CENCAS3722 CENCA T0467 CENCA T7223 CENCAU5153 CENCAP5138 CENCAR6749 CENCAS3729 CENCAS6884 CENCA T0477 CENCA W0749 CENCAP9807 CENCAR6684 CENCAS3733 CENCA T0468 CENCA T7226 CENCA W0757 CENCAP9805 CENCAR6753 CENCAS3732 CENCAS6886 CENCA T7222 CENCAU5151 CENCAP9806 CENCAR6752 CENCAS3737 CENCA T0469 CENCA T7227 CENCA W0761 CENCAP9808 CENCAR6755 CENCAS3734 CENCA T0472 CENCA T7225 CENCAU5161 CENCAP9812 CENCAR6756 CENCAS3739 CENCA T0474 CENCA T7220 CENCA W0758 CENCAP981 1 CENCAR6754 CENCAS3740 CENCA T0466 CENCAU3760 CENCA W7228 CENCAP9819 CENCAR6758 CENCAS3726 CENCA T0471 CENCAU3761 CENCAU5160 CENCAP9813 CENCAR6761 CENCAS3725 CENCA T0470 CENCA T7229 CENCAU5152 CENCAP9820 CENCAR6759 CENCAS3738 CENCA T0473 CENCAU5158 CENCA W0760 CENCAP9818 CENCAR6763 CENCAS3735 CENCA T5301 CENCAU5149 CENCA W7229 CENCAP9816 CENCAR6760 CENCAS3736 CENCA T5300 CENCAU5150 CENCA W7227 CENCAP9822 CENCAR6762 CENCAS6871 CENCA T0476 CENCAU5148 CENCA W0762 CENCAP9817 CENCAR9933 CENCAS6869 CENCA T7210 CENCAU5157 CENCA W7231 CENCAR471 1 CENCAR9932 CENCAS6872 CENCA T5303 CENCAU5159 CENCA W7230 CENCAR4707 CENCAR6757 CENCAS6875 CENCA T721 1 CENCAU5162 CENCA W7232 CENCAP9824 CENCAR9934 CENCAS6873 CENCA T5306 CENCAU5167 CENCA W7240 CENCAP9821 CENCAR9931 CENCAS6876 CENCA T7212 CENCAU5165 CENCA W7234 CENCAP9823 CENCAR9939 CENCAS6868 CENCA T5305 CENCAU8318 CENCA W7235 CENCAR4712 CENCAR9935 CENCAS6870 CENCA T5309 CENCAU5163 CENCA W7238 CENCAR4708 CENCAR9938 CENCAS6878 CENCA T5308 CENCAU5164 CENCA W7237 CENCAR4710 CENCAR9936 CENCAS3741 CENCA T7213 CENCAU8319 CENCA W7236 CENCAR4713 CENCAS2795 CENCAS6881 CENCA T5307 CENCA W0746 CENCA W7239 CENCAR4715 CENCAS2792 CENCAS6867 CENCA T7215 CENCA W0747 CENCA W7242 CENCAR4714 CENCAR9941 CENCAS6882 CENCA T7217 CENCA W0753 CENCA W7243 CENCAR4716 CENCAR9937 CENCAS6877 CENCA T5304 CENCA W0755 CENCA W7241 CENCAR4717 CENCAR9940 CENCAS6879 CENCA T5302 CENCAU5166 CENCA W7245 August 31/15 

# PW4G-100-A72-255 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).CENCAR4722 CENCAS2793 CENCAS6883 CENCA T0479 CENCA W0744 CENCA W7244 CENCAR4723 CENCAS2791 CENCAS6880 CENCA T0475 CENCA W0745 CENCAX4139 CENCAR4720 CENCAS2794 CENCAS6874 CENCA T7216 CENCA W0748 CENCAX4140 CENCAR4721 CENCAS3727 CENCA T0463 CENCA T7214 CENCA W0756 CENCAX4135 CENCAR4718 CENCAS3723 CENCA T0462 CENCA T7219 CENCA W0754 CENCAX4136 CENCAR6683 CENCAS3731 CENCAS6885 CENCA T0478 CENCA W0752 CENCAX4138 CENCAX4137 CENCAX4179 CENCA Y8152 CENCA14443 CENCA17820 CENCA33657 CENCAX4143 CENCAX4181 CENCA02748 CENCA10564 CENCA17823 CENCA33654 CENCAX4147 CENCAX4182 CENCA Y8158 CENCA10563 CENCA17821 CENCA35132 CENCAX4142 CENCAX4178 CENCA02747 CENCA14441 CENCA17826 CENCA33655 CENCAX4144 CENCAX4185 CENCA02749 CENCA14442 CENCA17827 CENCA33641 CENCAX4145 CENCAX4177 CENCA02745 CENCA14449 CENCA17825 CENCA35129 CENCAX4146 CENCAX4186 CENCA02743 CENCA14451 CENCA17808 CENCA35137 CENCAX4150 CENCAX4187 CENCA02744 CENCA14447 CENCA27578 CENCA35138 CENCAX4152 CENCAX4183 CENCA02746 CENCA14448 CENCA27576 CENCA35136 CENCAX4151 CENCAX4184 CENCA02752 CENCA14450 CENCA27577 CENCA35130 CENCAX4148 CENCAX4190 CENCA02751 CENCA14444 CENCA27579 CENCA35128 CENCAX4154 CENCAX4189 CENCA02750 CENCA14446 CENCA27580 CENCA35126 CENCAX4149 CENCAX4191 CENCA02754 CENCA14454 CENCA27581 CENCA35134 CENCAX4155 CENCAX4192 CENCA02753 CENCA14445 CENCA27588 CENCA35133 CENCAX4158 CENCAX4188 CENCA10547 CENCA14456 CENCA27587 CENCA35131 CENCAX4156 CENCAX4193 CENCA02757 CENCA14459 CENCA27583 CENCA35135 CENCAX4157 CENCA Y8142 CENCA02756 CENCA14457 CENCA27584 CENCA17828 CENCAX4153 CENCA Y8144 CENCA02755 CENCA17809 CENCA27585 CENCA17829 CENCAX4161 CENCA Y8141 CENCA02759 CENCA17806 CENCA27586 CENCA35127 CENCAX4162 CENCAX4194 CENCA10548 CENCA14453 CENCA27582 CENCA35141 CENCAX4159 CENCA Y8143 CENCA10545 CENCA17824 CENCA33638 CENCA35142 CENCAX4166 CENCA Y8140 CENCA02760 CENCA14452 CENCA27590 CENCA35139 CENCAX4160 CENCA Y8149 CENCA10546 CENCA17810 CENCA27592 CENCA35144 CENCAX4167 CENCA Y8146 CENCA10550 CENCA14460 CENCA27594 CENCA35143 CENCAX4170 CENCA Y8145 CENCA10549 CENCA14458 CENCA27593 CENCA43496 CENCAX4172 CENCA Y8150 CENCA10553 CENCA14455 CENCA27595 CENCA35140 CENCAX4169 CENCA Y8147 CENCA10551 CENCA17817 CENCA27589 CENCA43495 CENCAX4176 CENCA Y8148 CENCA10554 CENCA17814 CENCA27591 CENCA43850 August 31/15 

# PW4G-100-A72-255 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).CENCAX4173 CENCA Y8155 CENCA10561 CENCA17807 CENCA33640 CENCA43853 CENCAX4175 CENCA Y8159 CENCA10560 CENCA17813 CENCA33643 CENCA43848 CENCAX4163 CENCA02742 CENCA10555 CENCA17815 CENCA33639 CENCA43855 CENCAX4164 CENCA Y8153 CENCA10562 CENCA17812 CENCA33642 CENCA43851 CENCAX4168 CENCA Y8151 CENCA10552 CENCA1781 1 CENCA35125 CENCA43849 CENCAX4171 CENCA Y8157 CENCA10558 CENCA17819 CENCA33656 CENCA43852 CENCAX4174 CENCA Y8156 CENCA10556 CENCA17816 CENCA33644 CENCA43859 CENCAX4165 CENCA Y8154 CENCA10559 CENCA17818 CENCA33653 CENCA43857 CENCAX4180 CENCA02741 CENCA10557 CENCA17822 CENCA33652 CENCA43862 CENCA43866 CENCA50644 CENCA58356 CENCA60136 CENCA67256 CENCA72713 CENCA43854 CENCA50647 CENCA58612 CENCA63647 CENCA69675 CENCA74565 CENCA43856 CENCA54906 CENCA58360 CENCA63643 CENCA69676 CENCA74566 CENCA43861 CENCA50654 CENCA58605 CENCA63645 CENCA67255 CENCA74562 CENCA43867 CENCA50653 CENCA58606 CENCA63646 CENCA69671 CENCA74561 CENCA43865 CENCA50657 CENCA5861 1 CENCA63640 CENCA69672 CENCA74564 CENCA43858 CENCA54904 CENCA58620 CENCA63641 CENCA69670 CENCA74575 CENCA43860 CENCA50655 CENCA58615 CENCA63644 CENCA69678 CENCA74570 CENCA45576 CENCA50649 CENCA58617 CENCA63642 CENCA69685 CENCA74574 CENCA45577 CENCA50650 CENCA58619 CENCA63638 CENCA69680 CENCA74569 CENCA45578 CENCA50648 CENCA58621 CENCA63639 CENCA69679 CENCA74567 CENCA45579 CENCA54908 CENCA58614 CENCA63648 CENCA69683 CENCA74568 CENCA43864 CENCA50656 CENCA58618 CENCA63650 CENCA69677 CENCA74573 CENCA45580 CENCA50652 CENCA601 19 CENCA63651 CENCA69686 CENCA74572 CENCA43863 CENCA54910 CENCA58616 CENCA63649 CENCA69681 CENCA74571 CENCA48261 CENCA54912 CENCA60120 CENCA63652 CENCA69687 CENCA78364 CENCA48259 CENCA54907 CENCA58623 CENCA63653 CENCA69682 CENCA78362 CENCA48265 CENCA54914 CENCA58624 CENCA67246 CENCA71301 CENCA74576 CENCA48264 CENCA54913 CENCA58622 CENCA67244 CENCA71297 CENCA78365 CENCA48260 CENCA5491 1 CENCA60121 CENCA67248 CENCA71300 CENCA78366 CENCA48263 CENCA54909 CENCA60122 CENCA67245 CENCA69684 CENCA78363 CENCA48262 CENCA54919 CENCA60125 CENCA67243 CENCA71298 CENCA78368 CENCA48269 CENCA54920 CENCA60123 CENCA67240 CENCA71296 CENCA78370 CENCA48267 CENCA54916 CENCA60124 CENCA67242 CENCA71299 CENCA78375 CENCA50639 CENCA54917 CENCA60126 CENCA67241 CENCA72706 CENCA78372 August 31/15 

# PW4G-100-A72-255 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).CENCA48271 CENCA54921 CENCA60128 CENCA67239 CENCA72709 CENCA78371 CENCA50640 CENCA54922 CENCA60130 CENCA67249 CENCA71302 CENCA78369 CENCA48266 CENCA54915 CENCA60127 CENCA67247 CENCA72704 CENCA78374 CENCA48270 CENCA54918 CENCA60129 CENCA67252 CENCA72710 CENCA78376 CENCA50638 CENCA58359 CENCA60132 CENCA67238 CENCA72708 CENCA78373 CENCA48268 CENCA58358 CENCA60133 CENCA67251 CENCA72707 CENCA78367 CENCA50642 CENCA58355 CENCA60135 CENCA67253 CENCA72712 CENCA78379 CENCA50646 CENCA58354 CENCA60134 CENCA67257 CENCA7271 1 CENCA78381 CENCA50645 CENCA58357 CENCA60131 CENCA67250 CENCA74558 CENCA78378 CENCA50641 CENCA58613 CENCA63634 CENCA67254 CENCA74559 CENCA82085 CENCA50643 CENCA58353 CENCA63635 CENCA69674 CENCA74560 CENCA78377 CENCA50651 CENCA58607 CENCA63637 CENCA69673 CENCA74557 CENCA78380 CENCA82088 CENCA82098 CENCA86466 CENCA86468 CENCA86476 CENCA8991 1 CENCA82087 CENCA82095 CENCA82102 CENCA86470 CENCA86477 CENCA89913 CENCA82086 CENCA82096 CENCA74563 CENCA86472 CENCA86480 CENCA89914 CENCA82090 CENCA82094 CENCA82103 CENCA86473 CENCA89909 CENCA89912 CENCA82089 CENCA82097 CENCA86471 CENCA86474 CENCA89908 CENCA89917 CENCA82091 CENCA82099 CENCA86467 CENCA86478 CENCA89910 CENCA82092 CENCA82101 CENCA82104 CENCA86475 CENCA89907 CENCA82093 CENCA82100 CENCA86469 CENCA86479 CENCA89906

August 31/15 

# PW4G-100-A72-255 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).