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LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D ENGINE - CORE MODULE
ASSEMBL Y (72 - 00 -
02) - REMOV AL OF HPT ST AGE 1 DISKS AND HPC ST AGE 6 - 10 SPOOL FROM SER VICE
SERVICE
BULLETIN T able of contents
1.
REVISION
INFORMA TION .
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3 A.
Revision reason .
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3 B.
Revision history .
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2.
SUMMAR Y .
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3 A.
Reason .
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3.
PLANNING
INFORMA TION .
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3 A.
Applicability .
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3 B.
Concurrent requirements .
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4 C.
Reason .
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4 D.
Description .
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4 E.
Compliance .
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4 F .
Approval .
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7 G.
Manpower .
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7 H.
W eight and balance .
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7 I.
Electrical load data .
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7 J.
Software accomplishment summary .
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7 K.
Referenced documentation .
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7 L.
Documentation af fected .
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7 M.
Industry support information .
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7 N.
Interchangeability .
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4.
MA TERIAL
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5.
ACCOMPLISHMENT
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8 A.Removal of HPT Stage 1 Disk (SIN:
158A0) .
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8 B.Installation of HPT Stage 1 Disk (SIN:
158A0) .
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9 C.Removal of HPC Stage 6 - 10 Spool (SIN:
050A0) .
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9 D.Installation of HPC Stage 6 - 10 Spool (SIN:
050A0) .
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6.
ADDITIONAL
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13 A.
Additional information .
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13 LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 1/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D List of tables T able:
Reasons for update .
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2 T able:
References .
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2 T able 1:
Removal Thresholds of Af fected Population of HPT Stage 1 Disks P/N 2600M21G02 .
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5 T able 2:
Removal Thresholds of Af fected Population of HPT Stage 1 Disks P/N 2600M21G02 .
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5 T able 3:
Removal Thresholds of Af fected Population of HPC Stage 6 - 10 Spool P/N 2552M06G02 .
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7 T able:
Support equipment .
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8 T able:
Spares .
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8 List of figures Figure 1:
HPT Stage 1 Disk Location .
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1 1 Figure 2:
HPC Stage 6 - 10 Spool Location .
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12 CFM
PROPRIET AR Y
INFORMA TION The information contained in this document is CFM proprietary information and is disclosed in confidence.
It is the property of CFM and shall not be used, disclosed to others or reproduced without the express written consent of CFM, including, but without limitation, it is not to be used in the creation, manufacture, development, or derivation of any repairs, modifications, spare parts, design, or configuration changes or to obtain F AA 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.
The information contained in this document may also be controlled by U.S.
export control laws.
Unauthorized export or re - export is prohibited.
Reasons for update T able:
Reasons for update [TECHNICAL] T o update paragraphs
3.,
PLANNING
INFORMA TION and
5.,
ACCOMPLISHMENT INSTRUCTIONS.
References T able:
References T echnical Publication LEAP - 1B - 72 - 00 - 00 - 01A - 530A - C LEAP - 1B - 72 - 00 - 02 - 68A - 52AA - C LEAP - 1B - 72 - 52 - 00 - 01A - 530A - C LEAP - 1B - 72 - 52 - 00 - 09A - 522A - C to be continued ...
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 2/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D T echnical Publication LEAP - 1B - 72 - 52 - 00 - 09A - 722A - C LEAP - 1B - 72 - 52 - 00 - 01A - 710A - C LEAP - 1B - 72 - 00 - 02 - 68A - 72AA - C LEAP - 1B - 72 - 00 - 00 - 01A - 710A - C LEAP - 1B - 72 - 00 - 02 - 01A - 530A - C LEAP - 1B - 72 - 30 - 00 - 01A - 530A - C LEAP - 1B - 72 - 31 - 00 - 01A - 530A - C LEAP - 1B - 72 - 31 - 00 - 01A - 710A - C LEAP - 1B - 72 - 30 - 00 - 01A - 710A - C LEAP - 1B - 72 - 00 - 02 - 01A - 710A - C Management information Manufacturer recommendation:
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Recommended T ask type:
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Modification Original issue date:
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2023 - 03 - 07
1.
REVISION
INFORMA TION A.
Revision reason Issue Number Revision Reason 001 Baseline.
002 T o update paragraphs
3.,
PLANNING
INFORMA TION and
5.,
ACCOMPLISHMENT INSTRUCTIONS.
B.
Revision history Issue Number Issue Date 001 2023 - 03 - 07
2.
SUMMAR Y A.
Reason T o remove parts from service.
3.
PLANNING
INFORMA TION A.
Applicability LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 3/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D This Service Bulletin is applicable to:
• Engine type:
LEAP - 1B
• Engine model(s):
LEAP - 1B21,LEAP - 1B23,LEAP - 1B25,LEAP - 1B27,LEAP - 1B28,LEAP - 1B28B1,LEAP - 1B28B2,LEAP - 1B28B2C,LEAP - 1B28B3,LEAP - 1B28BBJ1,LEAP - 1B28BBJ2 This Service Bulletin is applicable to the LEAP - 1B engines that have installed the stage 1 high pressure turbine (HPT) rotor disks (HPT stage 1 disks) P/N 2600M21G02 and compressor rotor stages 6 - 10 spool [high pressure compressor (HPC) stage 6 - 10 spool] P/N 2552M06G02, with serial numbers listed in T able 1 through T able 3 .
B.
Concurrent requirements None.
C.
Reason
(1) Objective:
T o remove parts from service.
(2) Condition:
The af fected HPT stage 1 disks and HPC stage 6 - 10 spool have been manufactured from material that may have potential reduced material properties due to iron inclusion.
(3) Cause:
The potential reduced material capability may decrease fatigue life of the af fected HPT stage 1 disks and HPC stage 6 - 10 spool.
(4) Improvement:
The af fected HPT stage 1 disks and HPC stage 6 - 10 spool will be removed from service.
(5) Substantiation:
Substantiation is by analysis.
D.
Description This Service Bulletin provides serial numbers of HPT stage 1 disks and HPC stage 6 - 10 spool with potential reduced material capability .
Also, this Service Bulletin recommends the removal of the af fected HPT stage 1 disks and HPC stage 6 - 10 spools.
E.
Compliance Category 2 NOTE:
Some steps in paragraphs
3.E., Compliance and
5.,
ACCOMPLISHMENT
INSTRUCTIONS are identified as Required for Compliance (RC).
If this Service Bulletin is mandated by an Airworthiness Directive (AD), the steps identified as RC must be done to comply with the AD.
Steps not identified with RC are recommended and may be deviated from;
done as a part of other actions;
or done with accepted methods different from those given in this Service Bulletin if the RC steps can be done and the airplane returned to a serviceable condition.
RC - CFM recommends that you do this Service Bulletin as soon as possible without ef fect on revenue service but before cycles since new (CSN) removal thresholds listed in T able 1 through T able 3 below , or at the next piece - part exposure of the af fected part, whichever comes first.
NOTE:
Specification of engine model(s) for applications in T able 1 through T able 3 :
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 4/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D
• Commercial Low Thrust Application - Engine models:
LEAP - 1B21, LEAP - 1B23, LEAP - 1B25, LEAP - 1B27.
• Commercial High Thrust Application - Engine models:
LEAP - 1B28, LEAP - 1B28B1, LEAP - 1B28B2, LEAP - 1B28B2C.
• Commercial Application - Engine model:
LEAP - 1B28B3.
• Business Jet Application - Engine models:
LEAP - 1B28BBJ1, LEAP - 1B28BBJ2.
T able 1:
Removal Thresholds of Af fected Population of HPT Stage 1 Disks P/N 2600M21G02 HPT Stage 1 Disk Serial Number Commercial Low Thrust - CSN Commercial High Thrust - CSN LEAP - 1B28 B3 - CSN Business Jet - CSN GWN13A5K GWN13A T2 GWN13C30 GWN13C5F GWN13C9G GWN13CEJ GWN13CGF GWN13CNK GWN13F40 GWN13FC5 GWN13FHF GWN13FLM GWN13HCP GWN13JGP GWN13LR4 GWN13PW7 GWN13PW9 - - - - - - 3,880 3,710 2,530 2,250 T able 2:
Removal Thresholds of Af fected Population of HPT Stage 1 Disks P/N 2600M21G02 HPT Stage 1 Disk Serial Number Commercial Low Thrust - CSN Commercial High Thrust - CSN LEAP - 1B28 B3 - CSN Business Jet - CSN GWN140K0 GWN1410L GWN1410M GWN1410N GWN1414T GWN1419H GWN141G4 GWN141GF GWN141K7 GWN141K8 GWN141MF GWN141MG GWN141MH GWN1421G GWN14276 GWN142C5 GWN142GM GWN142P0 GWN142P1 GWN14322 GWN1434G GWN14350 GWN1436P GWN143C5 GWN143HC GWN143HT GWN143L9 GWN143LA GWN143W3 GWN14738 GWN1476N GWN147MW GWN148A6 GWN148A8 GWN148A9 GWN148EE GWN148EH GWN148EP GWN148H3 GWN148HA GWN148KH GWN148LL GWN148NN GWN148NP GWN149A W GWN14A4E GWN14C1E GWN14C34 GWN14E4F GWN14FHM GWN14G1J GWN14G2H GWN14G44 GWN14G45 GWN14G50 5,440 5,210 3,530 3,250 to be continued ...
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 5/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D HPT Stage 1 Disk Serial Number Commercial Low Thrust - CSN Commercial High Thrust - CSN LEAP - 1B28 B3 - CSN Business Jet - CSN GWN14G5H GWN14G9L GWN14GF6 GWN14GGA GWN14GGE GWN14GK4 GWN14GK6 GWN14GMG GWN14GMH GWN14GMJ GWN14GPK GWN14GWW GWN14H1K GWN14H1L GWN14H4C GWN14H69 GWN14HC5 GWN14HE9 GWN14J8H GWN14JN3 GWN14JN7 GWN14JW7 GWN14K5A GWN14K90 GWN14KN2 GWN14L0A GWN14L0C GWN14L60 GWN14L61 GWN14L62 GWN14L95 GWN14LRF GWN14M2F GWN14R60 GWN14R6P GWN14WLP GWN155K0 GWN155W1 GWN1573A GWN1573C GWN1573E GWN1573H GWN1577F GWN157EC GWN157K9 GWN157KA GWN157KC GWN157L W GWN157MP GWN157MR GWN157PF GWN157RL GWN1583W GWN1586F GWN1588T GWN158CE GWN158MC GWN158TG GWN159LC GWN159RF GWN159W A GWN159WC GWN15A1R GWN15A1W GWN15A29 GWN15A89 GWN15A8A GWN15A8C GWN15A8E GWN15AC6 GWN15AG9 GWN15AHF GWN15AL1 GWN15AN7 GWN15AP0 GWN15AR7 GWN15A W6 GWN15C3W GWN15CER GWN15CNP GWN15CPL GWN15E33 GWN15EG9 GWN15EH8 TMT1A TE9 TMT1A TED TMT1C4F4 TMT1C9U0 TMT1C9U4 TMT1D01G TMT1D01H TMT1D1JN TMT1D1JP TMT1D1JR TMT1D1K0 TMT1D1K1 TMT1DG6D TMT1DG6G TMT1E2K6 TMT1E3FG TMT1EAN5 TMT1EAN7 TMT1EG1U TMT1EG2C TMT1EG2D TMT1EG2F TMT1HGJA TMT1HGJC TMT1HGJD TMT1HMJ6 TMT1HMJL TMT1JECE TMT1JM1L TMT1K33G TMT1K390 LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 6/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D T able 3:
Removal Thresholds of Af fected Population of HPC Stage 6 - 10 Spool P/N 2552M06G02 HPC Stage 6 - 10 Spool Serial Number Commercial Low Thrust - CSN Commercial High Thrust - CSN LEAP - 1B28 B3 - CSN Business Jet - CSN GWN1 1C6F - - - - - - - - 8,750 8,590 7,080 8,380 Impact A This recommendation is to address a condition that may af fect Flight Safety .
NOTE:
This Service Bulletin can be done in shop.
This Service Bulletin is of fered to improve the reliability or performance of your CFM 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 will be taken into consideration by CFM in evaluating future product performance issues that may arise in the operator ’ s fleet.
F .
Approval The technical content of this Service Bulletin is approved by the F AA and under the Authority of DOA No.
EASA.21J.086.
G.
Manpower After you get access to the HPT rotor , you will need approximately 15 man - hours to remove the HPT stage 1 disk.
After you get access to the HPC rotor , you will need approximately 10 man - hours to remove the HPC stage 6 - 10 spool.
H.
W eight and balance W eight and balance are not changed.
I.
Electrical load data Not Applicable.
J.
Software accomplishment summary Not Applicable.
K.
Referenced documentation CFM LEAP - 1B Engine Illustrated Parts Catalog (EIPC), CFM - TP - 620 EIPC.21 CFM LEAP - 1B Engine Shop Manual (ESM), CFM - TP - 620 SM.21 CFM LEAP Illustrated T ools and Equipment Manual (ITEM), CFM - TP .ITEM.25 L.
Documentation affected None.
M.
Industry support information None.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 7/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D N.
Interchangeability Not Applicable.
4.
MA TERIAL
INFORMA TION List of material sets Not Applicable.
List of support equipment Support equipment Name T ool Number Reference (Qty) MFR Unit $ Price (Pkg Qty) L/T Special T ools HPT Rotor Assembly and Disassembly Fixture 956A3001 LEAP - 00 - SP - 01 - 53 - 00A - 066A - C
(1) - Quote ( -) Quote NOTE:
For purchasing details, contact CFM LEAP tooling licensees:
9M323 - AGSE, F4590 - Dedienne, or 5QE71 - Rhinestahl.
NOTE:
Replenishment Lead T ime (L/T) in days.
NOTE:
Prices are provided for planning purposes and are subject to change.
List of supplies Not Applicable.
List of spares Spares New PN / SIN / MFR (New Qty) Unit $ Price (Pkg Qty) L/T New Part Name (CSN) 2600M21G02 / 158A0 / 07482
(1) 403,800 .00
(1) 60 DISK, ST AGE 1 HPT ROT OR (01 - 250, 72 - 52 -
00) 2552M06G04 / 050A0 / 07482
(1) 433,500 .00
(1) 60 SPOOL, ST AGE 6 - 10 COMP ROT OR (01 - 680 00B, 72 - 31 -
00) NOTE:
Replenishment Lead T ime (L/T) in days.
NOTE:
Prices are provided for planning purposes and are subject to change.
List of removed spares Not Applicable.
5.
ACCOMPLISHMENT
INSTRUCTIONS A.
Removal of HPT Stage 1 Disk (SIN:
158A0) NOTE:
These Accomplishment Instructions refer to methods, techniques, and practices specified in other documents.
When the words "refer to" are used and there are other acceptable methods, techniques, and practices (including tools, equipment, and test equipment) those acceptable methods, techniques, practices (including tools, equipment, and test equipment) may be used to complete the work.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 8/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D
(1) Remove the core module assembly (SIN:
00104) from the engine assembly (SIN:
00100).
Refer to the LEAP - 1B ESM, 72 - 00 - 00,
DISASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 00 - 00 - 01A - 530A - C ).
(2) Remove the HPT rotor assembly (SIN:
15000, Figure 1 ) from the core module assembly (SIN:
00104).
Refer to the LEAP - 1B ESM, 72 - 00 - 02, REMOVE ENGINE
MODULAR
SECTION ( Refer to:
LEAP - 1B - 72 - 00 - 02 - 68A - 52AA - C ).
(3) Disassemble the HPT rotor assembly (SIN:
15000, Figure
1).
Refer to the LEAP - 1B ESM, 72 - 52 - 00, DIS-
ASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 52 - 00 - 01A - 530A - C ).
(4) RC - Remove the af fected HPT stage 1 disk (1, Figure 1 ) (SIN:
158A0) from the HPT rotor fixture.
Refer to the LEAP - 1B ESM, 72 - 52 - 00, REMOVE SUPPOR T
EQUIPMENT/REMOVE FROM SUPPOR T EQUIP- MENT ( Refer to:
LEAP - 1B - 72 - 52 - 00 - 09A - 522A - C ).
B.
Installation of HPT Stage 1 Disk (SIN:
158A0)
(1) RC - Install a new or serviceable HPT stage 1 disk (1, Figure 1 ) (SIN:
158A0), forward end down, into the HPT rotor fixture.
Refer to the LEAP - 1B ESM, 72 - 52 - 00, INST ALL SUPPOR T
EQUIPMENT/INST ALL ON SUPPOR T
EQUIPMENT ( Refer to:
LEAP - 1B - 72 - 52 - 00 - 09A - 722A - C ).
(2) Assemble the HPT rotor assembly (SIN:
15000, Figure 1 ).
Refer to the LEAP - 1B ESM, 72 - 52 - 00, ASSEM- BLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 52 - 00 - 01A - 710A - C ).
(3) Install the HPT rotor assembly (SIN:
15000, Figure 1 ) onto the core module assembly (SIN:
00104).
Refer to the LEAP - 1B ESM, 72 - 00 - 02, INST ALL ENGINE
MODULAR
SECTION ( Refer to:
LEAP - 1B - 72 - 00 - 02 - 68A - 72AA - C ).
(4) Install the core module assembly (SIN:
00104) on the engine assembly (SIN:
00100).
Refer to LEAP - 1B ESM, 72 - 00 - 00,
ASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 00 - 00 - 01A - 710A - C ).
C.
Removal of HPC Stage 6 - 10 Spool (SIN:
050A0)
(1) Remove the core module assembly (SIN:
00104) from the engine assembly (SIN:
00100).
Refer to the LEAP - 1B ESM, 72 - 00 - 00,
DISASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 00 - 00 - 01A - 530A - C ).
(2) Disassemble the core module assembly (SIN:
00104).
Refer to the LEAP - 1B ESM, 72 - 00 - 02,
DISASSEM- BLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 00 - 02 - 01A - 530A - C ).
(3) Disassemble the HPC assembly (SIN:
08000).
Refer to the LEAP - 1B ESM, 72 - 30 - 00,
DISASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 30 - 00 - 01A - 530A - C ).
(4) Disassemble the HPC rotor assembly (SIN:
05000, Figure 2 ).
Refer to the LEAP - 1B ESM, 72 - 31 - 00,
DISASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 31 - 00 - 01A - 530A - C ).
(5) RC - Remove the af fected HPC stage 6 - 10 spool (1, Figure 2 ) (SIN:
050A0).
D.
Installation of HPC Stage 6 - 10 Spool (SIN:
050A0)
(1) RC - Assemble the HPC rotor assembly (SIN:
05000, Figure 2 ) with a new or serviceable HPC stage 6 - 10 spool
(1) (SIN:
050A0).
Refer to the LEAP - 1B ESM, 72 - 31 - 00,
ASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 31 - 00 - 01A - 710A - C ).
(2) Assemble the HPC assembly (SIN:
08000).
Refer to the LEAP - 1B ESM, 72 - 30 - 00,
ASSEMBLE PROCE- DURE ( Refer to:
LEAP - 1B - 72 - 30 - 00 - 01A - 710A - C ).
(3) Assemble the core module assembly (SIN:
00104).
Refer to the LEAP - 1B ESM, 72 - 00 - 02,
ASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 00 - 02 - 01A - 710A - C ).
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 9/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D
(4) Install the core module assembly (SIN:
00104) on the engine assembly (SIN:
00100).
Refer to LEAP - 1B ESM, 72 - 00 - 00,
ASSEMBLE
PROCEDURE ( Refer to:
LEAP - 1B - 72 - 00 - 00 - 01A - 710A - C ).
LEAP - 1B - 72 - 00 - 0392 - 01A - 930A - D Page 10/ 13 Issue 002 - 00 - 2023 - 09 - 05 © CFM
PROPRIET AR Y
INFORMA TION:
Subject to the restrictions on the media.
cfm The Power of Flight LEAP-1B-72-00-0392-01A-930A-D
HPT ROTOR
ASSEMBLY (SIN: 15000) LEGEND:
1. HPT STAGE 1 DISK (SIN 158A0) ICN-LEAP-1B-72000392-B-07482-00001-A-001-01 HPT Stage 1 Disk Location Figure 1 LEAP-1B-72-00-0392-01A-930A-D Page 11/13 Issue 002-00 - 2023-09-05 © CFM PROPRIETARY INFORMATION: Subject to the restrictions on the media
cim The Power of Flight LEAP-1B-72-00-0392-01A-930A-D АРС ROTOR
ASSEMBLY (SIN: 05000) VIEW A (OVOSO NIS ICN-LEAP-1B-72000392-B-07482-00002-A-001-01 HPC Stage 6-10 Spool Location Figure 2 LEAP-1B-72-00-0392-01A-930A-D Page 12/13 Issue 002-00 - 2023-09-05 © CFM PROPRIETARY INFORMATION: Subject to the restrictions on the media.