# General Electric Service Bulletin GE90-100: No revision named

- Rights: © General Electric Company. Filed by the FAA in regulations.gov docket FAA-2013-0879, the docket of AD 2013-24-17, 2017-07-04. 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: U.S. DOT/FAA - GE90-100 SB 72-0499-R00
- Pages: 14
- PDF: https://openairdocs.org/files/sha256/5a/46/5a467660669cae50766b7e94f3821bdde27e1301d9c882f9f4dc18aa1b5f4cca
- Page: https://openairdocs.org/service-documents/ge/ge90-100/file/5a467660669c

## 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.
Copyright (2013) General Electric Company, U.S.A.
August 14, 2013 GE90-100 S/B 72-0499
PAGE 1 of 14

### 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
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
351-103-106-0, P/N 351-103-107-0, P/N 351-103-141-0, P/N 351-103-142-0, P/N
351-103-144-0, P/N 351-103-145-0, P/N 351-103-148-0, P/N 351-103-149-0, and
P/N 351-103-151-0 are affected by this Service Bulletin.
NOTE: The HPC stage 2-5 spools with serial numbers listed in paragraph 4.,
APPENDIX - A are affected by this Service Bulletin.
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 you do this Service Bulletin as follows:
. If the HPC stage 2-5 spool has greater than 5,800 cycles since new (CSN),
remove within 3 months from the issue date of this Service Bulletin, but before
6,000 CSN.
. If the HPC stage 2-5 spool has greater than 5,500 CSN and less than 5,800
CSN, remove within 6 months from the issue date of this Service Bulletin, but
before 6,000 CSN.
. If the HPC stage 2-5 spool has less than 5,500 CSN, remove before reaching
5,800 CSN.
NOTE 1: This Service Bulletin is not intended to extend the life limit of any HPC stage
2-5 spools. If the published life limit for a part in the GE90-100 Engine
Manual (EM) Chapter 05 is lower than the removal thresholds in paragraph
1.C., Compliance, the Chapter 05 life limit supersedes recommendations in
this Service Bulletin.
NOTE 2: This Service Bulletin can be accomplished in shop.
This Service Bulletin is offered to improve the reliability or performance of your GE
product, or to help prevent the occurrence of the event or condition described in this
Service Bulletin. If the operator elects not to participate in the bulletin, that decision
August 14, 2013 GE90-100 S/B 72-0499
PAGE 2
GE PROPR IETARY 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
will be taken into consideration by GE in evaluating future product performance
issues that may arise in the operator’s fleet.
D. Concurrent Requirements
None.
E. Reason
(1) Objective:
T o improve reliability and remove parts from service.
(2) Condition:
HPC stage 2-5 spools in service have e xperienced micro-cracks in the HPC
stage 5-6 seal teeth spacer arm.
(3) Cause:
Elevated stresses due to coating application process and elevated
temperatures.
(4) Improvement:
The affected HPC stage 2-5 spools will be removed from service and replaced.
(5) Substantiation:
Substantiation is by analysis and comparative analysis.
F. Approval
This Service Bulletin contains no modi fication information that revises the approved
configuration and therefore does not require FAA approval.
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)
GEK 110005, GE90-100 Illustrated Parts Catalog (IPC)
August 14, 2013 GE90-100 S/B 72-0499
PAGE 3
GE PROPR IETARY 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
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:
Part Number
Qty/
Eng Part Name
Unit ($)
Price
Pkg
Qty
Lead
Time
Days
351-103-110-0 (1) Spool Stage 2-5 446,500.00 (1) 30
OR
351-103-108-0* (1) Spool Stage 2-5 NP (-) --
OR
351-103-109-0* (1) Spool Stage 2-5 NP (-) --
OR
351-103-143-0* (1) Spool Stage 2-5 NP (-) --
OR
351-103-146-0* (1) Spool Stage 2-5 NP (-) --
OR
351-103-147-0* (1) Spool Stage 2-5 NP (-) --
OR
351-103-150-0* (1) Spool Stage 2-5 NP (-) --
OR
351-103-152-0* (1) Spool Stage 2-5 NP (-) --
*Part not supplied by GE Engine Services Distribution L.L.C.
NP = Not Provisioned
NOTE: Prices are provided for planning purposes and are subject to change.
August 14, 2013 GE90-100 S/B 72-0499
PAGE 4
GE PROPR IETARY 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
(2) Other Spare Parts:
None.
(3) Consumables:
Code Number Description
C05-003 Marking Pen
B. Industry Support Information
Contact your Customer Support Manager (CSM).
C. Configuration Chart
Not applicable.
D. Parts Disposition
Scrap the removed HPC stage 2-5 spool.
E. Tooling - Price and Availability
None.
3. ACCOMPLISHMENT INSTRUCTIONS
A. General
(1) Make sure if the HPC stage 2-5 spool (1, Figure 1) serial number is listed in
paragraph 4., A PPENDIX - A and then do as follows:
(a) If the HPC stage 2-5 spool (1) serial number is not listed, no more
action is necessary.
(b) If the HPC stage 2-5 spool (1) serial number is listed in paragraph 4.,
APPENDIX - A, continue with step 3.A.(2).
(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 stage 2 dovetail
slot No. 1. Refer to the GE90-100 EM, 72-31-00, DISASSEMBLY 001 or
DISASSEMBLY 002, and Figure 2.
(3) When you can see the serial number on the outer surface of the stage 2
dovetail slot No. 1, physically do a check of the serial number engraved in the
marking area of the suspect 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.
August 14, 2013 GE90-100 S/B 72-0499
PAGE 5
GE PROPR IETARY 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
(4) When you 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:
CAUTION: THE AFFECTED HPC STAGE 2-5 SPOOL IS NOT SERVICEABLE
AND NOT REPAIRABLE DESPITE THE VISUAL CONDITIONS.
(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) Mark "NON SERVICEABLE" 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.
(5) Make sure that the "NON SERVICEABLE" mark can be read and the label is
attached tightly to prevent the HPC stage 2-5 spool (1, Figure 1) from being
reinstalled after removal.
(6) Remove the affected HPC stage 2-5 spool (1). Refer to the GE90-100 EM,
72-31-00, DISASSEMBLY 001 or DISASSEMBLY 002.
(7) Install a replacement HPC stage 2-5 spool (1, Figure 1). Refer to the
GE90-100 EM, 72-31-00, ASSEMBLY 001 or ASSEMBLY 002.
(8) Assemble the HPC rotor assembly. Refer to the GE90-100 EM, 72-31-00,
ASSEMBLY 001 or ASSEMBLY 002.
August 14, 2013 GE90-100 S/B 72-0499
PAGE 6
GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 7 (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
FWD
5004320-00
HPC Rotor Assembly
Figure 1, ( Sheet 1 of 2)
August 14, 2013  GE90-100 S/B 72-0499
PAGE 7
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 8 (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
INTERSTAGE 5-6
SEAL TEETH
HPC STAGE 5-6 SEAL
TEETH SPACER ARM
LEGEND:
1. HPC STAGE 2-5 SPOOL  5004321-00
HPC Rotor Assembly
Figure 1, ( Sheet 2)
August 14, 2013  GE90-100 S/B 72-0499
PAGE 8
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 9 (OCR)

GE 00 - 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
5004322-00
Marking Location of the HPC Stage 2-5 Spool
Figure 2
August 14, 2013  GE90-100 S/B 72-0499
PAGE 9
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 10

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 parts
have been re-marked 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)
351-103-106-0 LA095096 WM034003 906-103
351-103-106-0 LA098356 WM034002 906-102
351-103-106-0 LA099259 WM034004 906-104
351-103-106-0 LA100659 WM034005 906-105
351-103-106-0 LA108679 WM034007 906-107
351-103-106-0 LA109780 WM034008 906-108
351-103-106-0 LA109792 WM034010 906-110
351-103-106-0 LA110557 WM034009 906-109
351-103-106-0 LA110884 WM034013 906-113
351-103-106-0 LA115491 WM034012 906-112
351-103-106-0 LA115492 WM034011 906-111
351-103-106-0 LA115833 WM034014 906-116
351-103-106-0 LA116325 WM034016 906-115
351-103-106-0 LA116394 WM034017 906-117
351-103-106-0 LA116395 WM034015 906-114
351-103-106-0 LA117628 WM034019 906-119
351-103-106-0 LA117629 WM034018 906-118
351-103-106-0 LA118983 WM034021 906-121
351-103-106-0 LA118984 WM034020 906-120
351-103-106-0 LA119419 WM034023 906-123
351-103-107-0 LA118883 WM034022 906-122
351-103-107-0 LA119791 WM034024 906-124
351-103-107-0 LA120914 WM034026 906-126
August 14, 2013 GE90-100 S/B 72-0499
PAGE 10
GE PROPR IETARY 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
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)
351-103-107-0 LA120998 WM034025 906-125
351-103-107-0 LA121711 WM034028 906-128
351-103-107-0 LA121714 WM034032 906-132
351-103-107-0 LA122047 WM034029 906-129
351-103-107-0 LA122049 WM034089 906-189
351-103-107-0 LA122381 WM034031 906-131
351-103-107-0 LA122382 WM034030 906-130
351-103-107-0 LA122383 WM034033 906-133
351-103-107-0 LA122385 WM034034 906-135
351-103-107-0 LA123449 WM034036 906-136
351-103-107-0 LA123450 WM034035 906-134
351-103-107-0 LA124238 WM034039 906-139
351-103-107-0 LA124239 WM034046 906-147
351-103-107-0 LA124298 WM034040 906-140
351-103-107-0 LA124300 WM034037 906-137
351-103-107-0 LA124307 WM034038 906-138
351-103-107-0 LA124501 WM034041 906-141
351-103-107-0 LA124502 WM034043 906-143
351-103-107-0 LA124503 WM034042 906-142
351-103-107-0 LA124505 WM034047 906-146
351-103-107-0 LA125188 WM034044 906-144
351-103-107-0 LA125189 WM034045 906-145
351-103-107-0 LA125757 WM034048 906-148
351-103-107-0 LA125758 WM034049 906-149
351-103-107-0 LA125759 WM034054 906-154
351-103-107-0 LA125897 WM034071 906-171
351-103-107-0 LA125898 WM034065 906-164
351-103-107-0 LA125975 WM034056 906-156
351-103-107-0 LA125976 WM034053 906-153
351-103-107-0 LA126335 WM034055 906-155
August 14, 2013 GE90-100 S/B 72-0499
PAGE 11
GE PROPR IETARY 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)
351-103-107-0 LA126734 WM034051 906-151
351-103-107-0 LA126735 WM034052 Unknown
351-103-107-0 LA126736 WM034092 906-192
351-103-107-0 LA126737 WM034050 906-150
351-103-107-0 LA127450 WM034082 906-182
351-103-107-0 LA127451 WM034080 906-180
351-103-107-0 LA127452 WM034057 906-157
351-103-107-0 LA127453 WM034063 906-162
351-103-107-0 LA127454 WM034067 906-166
351-103-107-0 LA128316 WM034058 906-158
351-103-107-0 LA128317 WM034059 906-159
351-103-107-0 LA128318 WM034064 906-163
351-103-107-0 LA128319 WM034060 906-160
351-103-107-0 LA128320 WM034069 906-168
351-103-107-0 LA128321 WM034061 906-161
351-103-107-0 LA128322 WM034062 906-169
351-103-107-0 LA128500 WM034068 906-167
351-103-107-0 LA129364 WM034077 906-177
351-103-107-0 LA129365 WM034091 906-191
351-103-107-0 LA129366 WM034072 906-172
351-103-107-0 LA129367 WM034074 906-193
351-103-107-0 LA129368 WM034076 906-176
351-103-107-0 LA129369 WM034066 906-165
351-103-107-0 LA130802 WM034090 906-190
351-103-107-0 LA130803 WM034073 906-175
351-103-107-0 LA132095 WM034079 906-179
351-103-107-0 LA132096 WM034075 906-174
351-103-107-0 LA132097 WM034070 906-170
351-103-107-0 LA132116 WM034083 906-183
351-103-107-0 LA132720 WM034088 906-188
August 14, 2013 GE90-100 S/B 72-0499
PAGE 12
GE PROPR IETARY 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)
351-103-107-0 LA132721 WM034078 906-178
351-103-107-0 LA133345 WM034085 906-186
351-103-107-0 LA133346 WM034087 906-187
351-103-107-0 LA133347 WM034086 906-185
351-103-107-0 LA133348 WM034084 906-184
351-103-107-0 LA133349 WM034081 906-181
351-103-107-0 LA134478 WM034104 906-204
351-103-107-0 LA134479 WM034094 906-194
351-103-107-0 LA134480 WM034096 906-196
351-103-107-0 LA135372 WM034093 906-173
351-103-107-0 LA135373 WM034098 906-202
351-103-107-0 LA135620 WM034099 906-198
351-103-107-0 LA135621 WM034103 906-203
351-103-107-0 LA135622 WM034095 906-195
351-103-107-0 LA136026 WM034100 906-199
351-103-107-0 LA136028 WM034102 906-201
351-103-107-0 LA136029 WM034105 906-218
351-103-107-0 LA136030 WM034101 906-200
351-103-107-0 LA136035 WM034097 906-197
351-103-107-0 LA136430 WM034110 906-209
351-103-107-0 LA136431 WM034112 906-211
351-103-107-0 LA136432 WM034111 906-210
351-103-107-0 LA136433 WM034109 906-205
351-103-107-0 LA136434 WM034119 906-217
351-103-107-0 LA138184 WM034108 906-208
351-103-107-0 LA138723 WM034116 906-214
351-103-107-0 LA138724 WM034114 906-212
351-103-107-0 LA138725 WM034117 906-215
351-103-107-0 LA139701 WM034113 906-216
351-103-107-0 LA139702 WM034115 906-225
August 14, 2013 GE90-100 S/B 72-0499
PAGE 13
GE PROPR IETARY 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)
351-103-107-0 LA140791 WM034125 906-223
351-103-107-0 LA140792 WM034123 906-222
351-103-141-0 LA119416 WM034027 906-127
August 14, 2013 GE90-100 S/B 72-0499
PAGE 14
GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or first page.

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