# General Electric Service Bulletin GE90-100: No revision named - Rights: © General Electric Company. Filed by the FAA in regulations.gov docket FAA-2018-0406, the docket of AD 2018-20-23. Not covered by OpenAirDocs’ CC0 dedication. - Document: [General Electric Service Bulletin GE90-100](https://openairdocs.org/service-documents/ge/ge90-100.md) - Title as filed: GE90-100 SB 72-0714 R01 - Pages: 18 - PDF: https://openairdocs.org/files/sha256/3d/c4/3dc4d44f80f789086b00be1790406b703ed6b5727e3389f9ae5911fc67314d16 - Page: https://openairdocs.org/service-documents/ge/ge90-100/file/3dc4d44f80f7 ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement GE PROPRIETARY INFORMATION The information contained in this document is GE proprietary information and is disclosed in con- fidence. It is the property of GE and shall not be used, disclosed to others or reproduced without the express written consent of GE, including, but without limitation, it is not to be used in the cre- ation, manufacture, development, or derivation of any repairs, modi fications, spare parts, designs, or configuration changes or to obtain FAA or any other government or regulatory approval to do so. If consent is given for reproduction in whole or in part, this notice and the notice set forth on each page of this document shall appear in any such reproduction in whole or in part. This technical data is considered EAR controlled pursuant to 15 CFR Parts 730-774 respectively. Transfer of this data by any means to a Non-US Person, whether in the United States or abroad, without the proper U.S. Government authorization (e.g., License, exemption, NLR, etc.), is strictly prohibited. GE Aviation authorizes the Federal Aviation Administration to incorporate this document by reference in an Airworthiness Directive. Copyright (2018) General Electric Company, U.S.A. July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 1 of 18 ### Page 2 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement TRANSMITTAL INFORMATION REVISION 1 TO SERVICE BULLETIN 72-0714 Revision 1 is issued to update paragraphs 1.A., E ffectivity and 4., A PPENDIX - A. The original was issued July 27, 2017. Revision bars in the left margin identify changes. 1. PLANNING INFORMATION A. Effectivity GE90-110B1 and -115B This Service Bulletin is applicable to all GE90-100 engines. The spool stages 2-5 [high pressure compressor (HPC) stage 2-5 spools] P/N 351-103-108-0, P/N 351-103-109-0, P/N 351-103-110-0, P/N 351-103-143-0, P/N 351-103-146-0, P/N 351-103-147-0, P/N 351-103-150-0, and P/N 351-103-152-0 are affected by this Service Bulletin. NOTE 1: The HPC stage 2-5 spool P/N 351-103-108-0 (or the reidenti fied HPC stage 2-5 spool P/N 351-103-143-0, P/N 351-103-146-0, or P/N 351-103-150-0) with serial numbers listed in paragraph 4., A PPENDIX - A is affected by this Service Bulletin. NOTE 2: The affected part numbers and the table given in paragraph 4., A PPENDIX - A show original HPC stage 2-5 spool part numbers from as-delivered parts. If the parts have been remarked to new part numbers as speci fied by other Service Bulletins but the spool serial numbers are still shown in this table, they are still applicable to the recom mendations of this Service Bulletin. NOTE 3: All the HPC stage 2-5 spools P/N 351-103-109-0, P/N 351-103-110-0, P/N 351-103-147-0, and P/N 351-103-152-0 are affected by this Service Bulletin with no restriction on the serial numbers. B. Description This Service Bulletin provides instructions to replace the affected HPC stage 2-5 spools with a replacement HPC stage 2-5 spool. This Service Bulletin also gives instructions to label, or mark and scrap the removed HPC stage 2-5 spool. C. Compliance Category 2 GE recommends that the affected HPC stage 2-5 spools be removed from service before they exceed 8,200 cycles since new (CSN). Impact A July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 2 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 3 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement This recommendation is to address a condition that may affect Flight Safety. NOTE: This Service Bulletin can be accomplished in shop. D. Concurrent Requirements None. E. Reason (1) Objective: T o improve reliability and remove affected parts from service. (2) Condition: The HPC stage 2-5 spools in service may experience crack initiation in the HPC stage 5-6 seal teeth spacer arm based on engineering analysis. (3) Cause: The thermomechanical model led to con firm elevated stresses and temperatures higher than the initially predicted, based on previous experience. (4) Improvement: The affected HPC stage 2-5 spools will be removed from service and replaced. (5) Substantiation: Substantiation is by analysis. F. Approval The data contained in this Service Bulletin has been reviewed by the FAA or authorized entity representing the FAA and the repair(s) and modi fication(s) herein comply with the applicable Aviation Regulations and are APPROVED for installation in the model(s) listed in this Service Bulletin. G. Manpower No additional man-hours are required to comply with this Service Bulletin. H. Weight and Balance Weight and balance are not changed. I. References (Use the latest version of these documents) GEK 9250, Commercial Engine Standard Practices Manual (SPM) GEK 109993, GE90-100 Engine Manual (EM) July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 3 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 4 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement GEK 110005, GE90-100 Illustrated Parts Catalog (IPC) GE90-100 S/B 72-0666, ENGINE - Compressor Module Assembly (72-30-00) - Limited Workscope for Removal and Installation of HPC Rotor Stage 2-5 Spool J. Publications Affected None. K. Interchangeability Not applicable. L. Software Accomplishment Summary Not applicable. 2. MATERIAL INFORMATION A. Material - Price and Availability (1) Parts necessary to do this Service Bulletin: None. (2) Other Spare Parts: Part Number Qty/ Eng Part Name Unit ($) Price Pkg Qty Lead Time Days 351-103-106-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-107-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-108-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-109-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-110-0* (1) Spool Stages 2-5 NP (-) -- OR July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 4 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 5 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Part Number Qty/ Eng Part Name Unit ($) Price Pkg Qty Lead Time Days 351-103-112-0 (1) Spool Stages 2-5 563,700.00 (1) 5 OR 351-103-141-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-142-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-143-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-144-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-145-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-146-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-147-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-148-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-149-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-150-0* (1) Spool Stages 2-5 NP (-) -- OR July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 5 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 6 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Part Number Qty/ Eng Part Name Unit ($) Price Pkg Qty Lead Time Days 351-103-151-0* (1) Spool Stages 2-5 NP (-) -- OR 351-103-152-0 (1) Spool Stages 2-5 572,700.00 (1) Quote *Part is a non-provisioned field rework part number. NP = Not Provisioned NOTE: Prices are provided for planning purposes and are subject to change. (3) Consumables: Code Number Description C05-003 Marking Pen B. Industry Support Information None. C. Configuration Chart Not applicable. D. Parts Disposition Remove the affected HPC stage 2-5 spools from service. E. Tooling - Price and Availability None. 3. ACCOMPLISHMENT INSTRUCTIONS A. General (1) Make sure that the HPC stage 2-5 spool (1, Figure 1) part number is listed in paragraph 1.A., E ffectivity and/or the serial number is listed in paragraph 4., APPENDIX - A, and then do as follows: (a) If the HPC stage 2-5 spool (1) is not affected, no more action is necessary. (b) If the HPC stage 2-5 spool (1) is affected, continue with step 3.A.(2). July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 6 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 7 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement (2) Disassemble the HPC rotor assembly until you can see the HPC stage 2-5 spool (1) serial number located on the outer surface of the HPC stage 2 dovetail slot No. 1. Refer to the GE90-100 EM, 72-31-00, DISASSEMBLY 001 or DISASSEMBLY 002, or GE90-100 S/B 72-0666, and Figure 2. (3) Once you find the part number on the outer surface of the HPC stage 2 No. 1 dovetail slot, do a physical check of the part number that is engraved in the identification area of the suspected HPC stage 2-5 spool (1, Figure 1). Make sure that the engraved part number (Figure 2) is affected by this Service Bulletin. (4) If the part number of the HPC stage 2-5 spool is P/N 351-103-108-0, P/N 351-103-143-0, P/N 351-103-146-0, or P/N 351-103-150-0, once you can see the serial number on the outer surface of the HPC stage 2 No. 1 dovetail slot, do a physical check of the serial number that is engraved in the identi fication area of the suspected HPC stage 2-5 spool (1, Figure 1). Make sure that the engraved serial number (Figure 2) is the same serial number as the one shown in paragraph 4., A PPENDIX - A. (5) Get access to the affected HPC stage 2-5 spool (1, Figure 1) and before the disassembly of the HPC stage 2-5 spool (1), do as follows: (a) Attach a cardboard or metal label (tag) with NON SERVICEABLE marked on it to the affected HPC stage 2-5 spool (1). Refer to the SPM, 70-16-02, TEMPORARY MARKING. OR (b) Put a NON SERVICEABLE mark on the affected HPC stage 2-5 spool (1, Figure 1). Use a marking pen (C05-003) or equivalent. Refer to the SPM, 70-16-02, TEMPORARY MARKING. (6) Make sure that the NON SERVICEABLE mark can be read and that the label is attached tightly to prevent the HPC stage 2-5 spool (1, Figure 1) from reinstallation after removal. (7) Remove the affected HPC stage 2-5 spool (1). Refer to the GE90-100 EM, 72-31-00, DISASSEMBLY 001 or DI SASSEMBLY 002, or GE90-100 S/B 72-0666. (8) Install a replacement HPC stage 2-5 spool (1, Figure 1). Refer to the GE90-100 EM, 72-31-00, ASSEMB LY 001 or ASSEMBLY 002, or GE90-100 S/B 72-0666. (9) Assemble the HPC rotor assembly. Refer to the GE90-100 EM, 72-31-00, ASSEMBLY 001 or ASSEMBLY 002, or GE90-100 S/B 72-0666. July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 7 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 8 (OCR) GEN • -100 SERIES GE Aircraft Engines SERVICE BULLETIN ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identification and Removal of HPC Stage 2-5 Spools from Service for Replacement FWD 5039037-00 HPC Rotor Assembly Figure 1, ( Sheet 1 of 2) July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 8 GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 9 (OCR) GEO • -100 SERIES GE Aircraft Engines SERVICE BULLETIN ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identification and Removal of HPC Stage 2-5 Spools from Service for Replacement INTERSTAGE 5-6 SEAL TEETH HPC STAGE 5-6 SEAL TEETH SPACER ARM LEGEND: 1. HPC STAGE 2-5 SPOOL 5039038-00 HPC Rotor Assembly Figure 1, ( Sheet 2) July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 9 GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 10 (OCR) GE O • - 100 SERIES GE Aircraft Engines SERVICE BULLETIN ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identification and Removal of HPC Stage 2-5 Spools from Service for Replacement HPC STAGE 2-5 SPOOL STAGE 2 DISK SLOT NUMBER 1- HPC STAGE 2-5 SPOOL SERIAL NUMBER BLADE NUMBER ONE LOCATION IS IDENTIFIED BY TWO NUMBER " 1" ON THE FORWARD FACE OF THE HPC STAGE 2-5 SPOOL STAGE 2 DISK STAGE 2 DISK SLOT NUMBER 2 NOTE: SOME HPC STAGE 2-5 SPOOLS COULD HAVE BEEN REMARKED MULTIPLE TIMES. THUS, THE MARKING AREA CAN BE DIFFERENT FROM THE ONE DESCRIBED ABOVE (THE MARKING MUST BE IN A DIFFERENT DOVETAIL LOCATION). 5039039-00 HPC Rotor Assembly Figure 2 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 10 GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 11 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement 4. APPENDIX - A The HPC stage 2-5 spool serial numbers listed below are affected by this Service Bulletin: NOTE 1: The table below shows original spool part numbers from as-delivered parts. If the parts have been remarked to new part numbers as speci fied by other Service Bulletins but the spool serial numbers are still shown in this table, they are still applicable to the recommendations in this Service Bulletin. NOTE 2: The information in the table below is the best available data. Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA139924 Unknown 906108 351-103-108-0 PA259984 Unknown 906109 351-103-108-0 PA113828 WM034385 906111 351-103-108-0 LA147390 Unknown 906115 351-103-108-0 PA131454 Unknown 906117 351-103-108-0 PA047921 WM034315 906125 351-103-108-0 PA010161 WM034318 906143 351-103-108-0 PA121299 WM034373 906165 351-103-108-0 PA235376 WM034470 906169 351-103-108-0 PA235374 WM034480 906200 351-103-108-0 PA177444 WM034425 906212 351-103-108-0 PA158707 WM034392 906223 351-103-108-0 LA152444 Unknown 906242 351-103-108-0 PA010162 WM034280 906252 351-103-108-0 LA147233 WM034168 906266 351-103-108-0 LA147394 WM034170 906267 351-103-108-0 PA135690 WM034391 906269 351-103-108-0 LA148247 WM034173 906272 351-103-108-0 LA148821 WM034178 906287 351-103-108-0 PA206086 WM034446 906295 351-103-108-0 PA206084 WM034451 906307 351-103-108-0 PA111099 WM034353 906318 351-103-108-0 PA235373 WM034482 906322 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 11 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 12 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA102565 WM034343 906329 351-103-108-0 LA156529 WM034240 906340 351-103-108-0 PA012802 WM034287 906357 351-103-108-0 PA012800 WM034271 906370 351-103-108-0 PA012639 WM034270 906371 351-103-108-0 LA157981 WM034272 906372 351-103-108-0 LA158255 WM034274 906373 351-103-108-0 LA158257 WM034275 906374 351-103-108-0 LA158253 WM034277 906376 351-103-108-0 LA158256 WM034279 906377 351-103-108-0 PA012635 WM034278 906378 351-103-108-0 PA106357 WM034354 906380 351-103-108-0 PA012797 WM034281 906381 351-103-108-0 PA043717 WM034310 906383 351-103-108-0 PA030097 WM034285 906384 351-103-108-0 PA019904 WM034284 906385 351-103-108-0 PA012803 WM034283 906387 351-103-108-0 PA030101 WM034289 906388 351-103-108-0 PA012801 WM034288 906389 351-103-108-0 PA025611 WM034286 906390 351-103-108-0 PA033713 WM034294 906391 351-103-108-0 PA072694 WM034320 906393 351-103-108-0 PA030100 WM034298 906394 351-103-108-0 PA030098 WM034299 906395 351-103-108-0 PA046890 WM034300 906397 351-103-108-0 PA046887 WM034302 906398 351-103-108-0 PA025613 WM034290 906399 351-103-108-0 PA047920 WM034306 906403 351-103-108-0 PA019903 WM034301 906404 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 12 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 13 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA030102 WM034311 906405 351-103-108-0 PA046889 WM034305 906406 351-103-108-0 PA044514 WM034307 906407 351-103-108-0 PA046891 WM034309 906408 351-103-108-0 PA044512 WM034312 906409 351-103-108-0 PA056388 WM034314 906410 351-103-108-0 PA056390 WM034308 906411 351-103-108-0 PA047917 WM034316 906412 351-103-108-0 PA056389 WM034317 906413 351-103-108-0 PA062796 WM034313 906416 351-103-108-0 PA065594 WM034319 906417 351-103-108-0 PA065592 WM034322 906419 351-103-108-0 PA030099 WM034297 906420 351-103-108-0 PA065591 WM034325 906422 351-103-108-0 PA065593 WM034324 906423 351-103-108-0 PA062797 WM034327 906424 351-103-108-0 PA044515 WM034328 906425 351-103-108-0 PA056392 WM034330 906426 351-103-108-0 PA098171 WM034323 906427 351-103-108-0 PA065596 WM034329 906428 351-103-108-0 PA091222 WM034333 906429 351-103-108-0 PA056391 WM034326 906430 351-103-108-0 PA095673 WM034337 906432 351-103-108-0 PA081323 WM034331 906433 351-103-108-0 PA091224 WM034339 906435 351-103-108-0 PA095670 WM034340 906436 351-103-108-0 PA086450 WM034332 906437 351-103-108-0 PA102562 WM034356 906438 351-103-108-0 PA046888 WM034342 906439 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 13 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 14 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA091223 WM034334 906441 351-103-108-0 PA102564 WM034346 906442 351-103-108-0 PA098170 WM034347 906443 351-103-108-0 PA086448 WM034349 906444 351-103-108-0 PA095671 WM034341 906445 351-103-108-0 PA095672 WM034338 906446 351-103-108-0 PA111100 WM034351 906447 351-103-108-0 PA091221 WM034345 906448 351-103-108-0 PA091225 WM034352 906449 351-103-108-0 PA102563 WM034348 906450 351-103-108-0 PA086451 WM034350 906451 351-103-108-0 PA113825 WM034355 906454 351-103-108-0 PA111098 WM034357 906455 351-103-108-0 PA047919 WM034304 906456 351-103-108-0 PA098169 WM034358 906457 351-103-108-0 PA106358 WM034360 906458 351-103-108-0 PA098172 WM034359 906459 351-103-108-0 PA081321 WM034361 906460 351-103-108-0 PA072693 WM034362 906461 351-103-108-0 PA106356 WM034365 906462 351-103-108-0 PA128190 WM034364 906463 351-103-108-0 PA111101 WM034363 906464 351-103-108-0 PA113826 WM034367 906465 351-103-108-0 PA062798 WM034366 906466 351-103-108-0 PA081322 WM034368 906467 351-103-108-0 PA081309 WM034370 906468 351-103-108-0 PA072696 WM034369 906469 351-103-108-0 PA113827 WM034371 906470 351-103-108-0 PA086449 WM034374 906471 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 14 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 15 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA072695 WM034375 906473 351-103-108-0 PA128189 WM034376 906474 351-103-108-0 PA121302 WM034378 906475 351-103-108-0 PA044513 WM034321 906476 351-103-108-0 PA131455 WM034377 906477 351-103-108-0 PA131452 WM034379 906478 351-103-108-0 PA121301 WM034380 906479 351-103-108-0 PA128187 WM034381 906480 351-103-108-0 PA128186 WM034383 906481 351-103-108-0 PA131453 WM034382 906482 351-103-108-0 PA149801 WM034386 906484 351-103-108-0 PA121300 WM034384 906485 351-103-108-0 PA128188 WM034387 906486 351-103-108-0 PA149802 WM034388 906487 351-103-108-0 PA139925 WM034390 906488 351-103-108-0 PA135691 WM034389 906489 351-103-108-0 PA135692 WM034393 906491 351-103-108-0 PA151699 WM034395 906493 351-103-108-0 PA163659 WM034397 906494 351-103-108-0 PA151698 WM034394 906495 351-103-108-0 PA158709 WM034396 906496 351-103-108-0 PA163661 WM034400 906498 351-103-108-0 PA163657 WM034401 906499 351-103-108-0 PA163662 WM034398 906500 351-103-108-0 PA158708 WM034402 906501 351-103-108-0 PA163663 WM034403 906502 351-103-108-0 PA163658 WM034404 906503 351-103-108-0 PA169144 WM034405 906504 351-103-108-0 PA169143 WM034407 906506 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 15 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 16 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA151700 WM034409 906507 351-103-108-0 PA173285 WM034410 906509 351-103-108-0 PA149800 WM034412 906510 351-103-108-0 PA169145 WM034413 906511 351-103-108-0 PA169146 WM034408 906512 351-103-108-0 PA183012 WM034418 906513 351-103-108-0 PA177446 WM034417 906514 351-103-108-0 PA135693 WM034414 906515 351-103-108-0 PA191786 WM034419 906516 351-103-108-0 PA173284 WM034415 906517 351-103-108-0 PA139926 WM034416 906518 351-103-108-0 PA177447 WM034420 906519 351-103-108-0 PA151701 WM034422 906520 351-103-108-0 PA173282 WM034424 906521 351-103-108-0 PA177448 WM034423 906522 351-103-108-0 PA177445 WM034421 906523 351-103-108-0 PA025612 WM034295 906524 351-103-108-0 PA183013 WM034426 906525 351-103-108-0 PA188735 WM034427 906526 351-103-108-0 PA188736 WM034430 906527 351-103-108-0 PA195700 WM034429 906528 351-103-108-0 PA195701 WM034434 906531 351-103-108-0 PA188737 WM034432 906532 351-103-108-0 PA191784 WM034435 906533 351-103-108-0 PA201272 WM034433 906534 351-103-108-0 PA201276 WM034436 906535 351-103-108-0 PA195695 WM034437 906536 351-103-108-0 PA201274 WM034438 906537 351-103-108-0 PA206082 WM034439 906538 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 16 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 17 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA206085 WM034440 906539 351-103-108-0 PA201273 WM034441 906540 351-103-108-0 PA201275 WM034442 906541 351-103-108-0 PA206081 WM034443 906542 351-103-108-0 PA201271 WM034444 906543 351-103-108-0 PA210354 WM034445 906544 351-103-108-0 PA183011 WM034447 906546 351-103-108-0 PA206083 WM034448 906547 351-103-108-0 PA210355 WM034449 906548 351-103-108-0 PA212836 WM034450 906549 351-103-108-0 PA210353 WM034453 906552 351-103-108-0 PA212838 WM034454 906553 351-103-108-0 PA173283 WM034455 906554 351-103-108-0 PA219688 WM034456 906555 351-103-108-0 PA217327 WM034458 906556 351-103-108-0 PA225837 WM034477 906557 351-103-108-0 PA217323 WM034459 906558 351-103-108-0 LA158254 WM034460 906559 351-103-108-0 PA230994 WM034461 906560 351-103-108-0 PA217325 WM034462 906561 351-103-108-0 PA225835 WM034463 906562 351-103-108-0 PA219690 WM034464 906563 351-103-108-0 PA225834 WM034465 906564 351-103-108-0 PA230993 WM034466 906565 351-103-108-0 PA212839 WM034467 906566 351-103-108-0 PA212960 WM034469 906567 351-103-108-0 PA238451 WM034468 906568 351-103-108-0 PA149798 Unknown 906569 351-103-108-0 PA217324 WM034471 906570 July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 17 GE PROP RIETARY INFORMATION - Subject to the restrictions on the cover or first page. ### Page 18 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Identi fication and Removal of HPC Stage 2-5 Spools from Service for Replacement Original HPC Stage 2-5 Spool Part Number HPC Stage 2-5 Spool Serial Number Original HPC Rotor Assembly Serial Number (at New Engine Build) Engine Serial Number (at New Engine Build) 351-103-108-0 PA239403 WM034473 906571 351-103-108-0 PA239404 WM034474 906572 351-103-108-0 PA239405 WM034475 906573 351-103-108-0 PA219689 WM034476 906574 351-103-108-0 PA249252 WM034481 906575 351-103-108-0 PA249253 WM034478 906576 351-103-108-0 PA249213 WM034479 906577 351-103-108-0 PA246554 WM034483 906580 351-103-108-0 PA246556 WM034484 906581 351-103-108-0 PA235375 WM034485 906582 351-103-108-0 PA230995 WM034486 906583 351-103-108-0 PA225863 WM034487 906584 351-103-108-0 PA217326 WM034488 906585 351-103-108-0 PA249214 WM034489 906586 351-103-108-0 PA249211 WM034490 906587 351-103-108-0 PA246555 WM034491 906588 351-103-108-0 PA254470 WM034492 906589 351-103-108-0 PA249251 WM034493 906590 351-103-108-0 PA219687 WM034494 906591 351-103-108-0 PA252228 WM034495 906592 351-103-108-0 PA219691 WM034496 906593 351-103-108-0 PA252226 WM034497 906594 351-103-108-0 PA225864 WM034498 906595 351-103-108-0 PA225836 WM034457 906596 351-103-108-0 PA259986 WM034499 906597 351-103-108-0 PA158706 WM034399 906612 351-103-108-0 PA149799 WM034411 Unknown 351-103-108-0 PA239402 WM034472 Unknown 351-103-108-0 PA252227 WM034500 Unknown 351-103-108-0 PA254468 Unknown Unknown July 27, 2017 GE90-100 S/B 72-0714 Revision 01, February 16, 2018 PAGE 18 GE PROP RIETARY INFORMATION - 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