SERVICE BULLETIN No. A298 72 0837
GULFSTREAM G200 · Service Bulletins
Overview
This Service Bulletin (SB) No. A298 72 0837 provides mandatory instructions for operators of the Gulfstream G200 regarding the correction of cycle counts for life-limited parts in engine modules M02 and M03. It outlines the necessary actions to ensure compliance with updated cycle counting methods to maintain flight safety.
- Mandatory SB for MAKILA 1 engine variants.
- Correct cycle counts for life-limited parts in modules M02 and M03.
- Action required within 30 days or 10 flight hours.
- New cycle values must be recorded on log cards.
- Modules exceeding life limits must be sent to approved repair centers.
- Document approved under EASA Airworthiness Directive.
- Updates include corrections to serial numbers of turbine discs.
- No engine removal required for compliance.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Reference only, not for flight. Use the current approved manual for your aircraft. See terms, section 5.
Document
Source
Copy found at regulations.gov. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 2023
- File size ·
- 385 KB
- Copy found at ·
- regulations.gov
- Language ·
- en
What is the SERVICE BULLETIN No. A298 72 0837?
The SERVICE BULLETIN No. A298 72 0837 is a service bulletins for the GULFSTREAM G200, dated 2023.
What year was the SERVICE BULLETIN No. A298 72 0837 published?
The SERVICE BULLETIN No. A298 72 0837 — the GULFSTREAM G200 service bulletins on file — is dated 2023.
Common. More common than 88% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the GULFSTREAM G200.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
GULFSTREAM G200 for sale now
Free — save the Galaxy to your watchlist and track it in one place.
More GULFSTREAM G200manuals & documents
Related documents
- EMERGENCY ALERT SERVICE BULLETINAirbus Helicopters EC130 T2 · Service Bulletins
- FALCON SERVICE BULLETINDASSAULT FALCON 8X · Service Bulletins
- Bollettino Tecnico N° 139-269AGUSTA AW139 · Service Bulletins
- SERVICE BULLETIN - FUSELAGE - FORWARD FUEL TANK PROBE CLEARANCE VERIFICATIONGULFSTREAM G280 · Service Bulletins
- MD HELICOPTERS 600N Service BulletinsMD HELICOPTERS 600N · Service Bulletins
If you fly the GULFSTREAM G200, you may also be researching these.
In this document
General
This section provides background on the necessity of the SB, detailing the deviation found in cycle counting methods and the need for corrections to life-limited parts.
Procedure Done at the Operator’s Site or Maintenance Center
Instructions for correcting cycle counts and recalculating remaining cycles for life-limited parts, including steps for documentation.
Procedure Done at a Maintenance Center Approved for Level 3
Similar to the previous section but tailored for maintenance centers with Level 3 approval.
Procedure Done at a Repair Center Approved for Level 4
Outlines procedures for updating cyclic consumption values at approved repair centers.
Approval
Details the approval status of the document and its compliance with EASA regulations.
Summary of Updates
Lists the updates made to the document, including the primary cause for the latest revision.
Safety notes
- Modules exceeding life limits must be returned to an approved repair center.
- If remaining cycles are lower than 200, modules can operate for a maximum of 400 additional cycles.
- If the authorized life limit is exceeded by 400 cycles or more, the module must be removed within 10 flight hours.
Full document text
For the definition of the fields in this Service Bulletin, refer to General Service Letter No. 3041 APPLICABLE ENGINE / VARIANT( S) EFFECTIVITY CODE M AINTENANCE L EVEL CONDITION OF APPLICATION EFFECT ON OPERATION MAKILA 1 A, A1, A2, K2 1-A 1, 2, 3 Within 30 days or 10 flight hours following this Mandatory SB publication (first limit reached): Check the presence of the life-limited parts given in the Appendix 1 in modules M02 and M03 of your fleet and calculate the new cyclic availability of the applicable modules. 4 Application prior to delivery Application of this Mandatory SB is the result of a technical requirement that can have an effect on flight safety for engines in service. The application of this SB is specified by the effectivity code given above. Subject: Module M02 and module M03 - Correction of the cycle count on some life-limited parts. Applicable from: “As soon as this Mandatory SB is issued” Version: B Date: 19 December 2023 Reason for update: Update of the Appendix 1 for correction of some S/Ns of 1st and 2nd stage HP turbine discs. Modification Periodical action One-off action x SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY SB VERSION B §1 - 1/1 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 1. GENERAL 1.1. Background 1.1.1. Context A MAKILA 1 A1 operator found a deviation between his implemented cycle counting method for gas generator and the procedure referenced in the MAKILA 1 A1 Maintenance Manual, task 05-10-02-200-801. 1.1.2. Analysis The method implemented by this operator results in undercounted gas generator cycles. Therefore, it is necessary to make a correction for Life-Limited Parts (LLP) used by this operator. Those LLP could have been installed on modules and engines of other fleets (through standard exchanges). 1.1.3. Solution The LLP which were subject to cycles undercounting, are listed in the Appendix 1 of this Mandatory SB. For each applicable parts, the number of consumed gas generator cycles to be added is also given herein. The new value of consumed gas generator cycles must be recorded on the log card of the module that includes the LLP. The remaining cycles of each of the parts must be re-evaluated based on the new value of consumed gas generator cycles and of the Authorized in-Service Life Limit (ASLL) declared in the Maintenance Manual of the applicable variant, task 05-10-01-200-801. These new remaining cycles values must be recorded on the log card of the module that includes the LLP. For the cases where the LLP life limit is exceeded, the modules will have to be returned to a Safran Helicopter Engines approved repair center, in accordance with the instructions described in paragraphs 2.5 and 2.6. 1.2. Approval - MAKILA 1 A - A1 - A2 variants: The technical content of this document is approved under the authority of the DOA (Design Organisation Approval) ref. EASA.21J.070. This Mandatory SB is subject to an EASA Airworthiness Directive. To be noted that a DGA Airworthiness Directive has been issued for the MAKILA 1 A1 modules listed in Appendix 2. - MAKILA 1 K2 variant: The technical information given in this document is approved by Safran Helicopter Engines. 1.3. Summary of updates Version Date Primary cause for update A 15-NOV-2023 First issue End of Section §1 “General” Signet1 SB VERSION B §2 - 1/5 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 2. PROCEDURE DONE AT THE OPERATOR’S SITE OR AT A MAINTENANCE CENTER APPROVED FOR LEVEL 1, 2 2.1. Manpower Not applicable. 2.2. Tools / Parts Mechanic's standard tools. 2.3. Parts information 2.3.1. Basic information Not applicable. 2.3.2. List of parts Not applicable. 2.3.3. Supply conditions Not applicable. 2.4. Procedures For each of the applicable life-limited parts, refer to paragraphs 2.5 and 2.6: - Correct the number of consumed gas generator cycles. - Correct the associated remaining cycle’s value given in the engine book. Signet1 SB VERSION B §2 - 2/5 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 2.5. Block diagram for this SB ASLL: Authorized in-Service Life Limit declared in the Maintenance Manual of the applicable variant, task 05-10-01-200-801. Note: This operating instruction is not applicable for the modules listed in the Appendix 2 which only concern the operator subject to the application of the DGA Airworthiness Directive ATvCN No. 2144- 23/DT/ASA/PRA. Signet1 Is one of the parts in the Appendix 1 installed on a module of your fleet? YES For each module M02 and M03 - Add the supplementary cycle value, given in the Appendix 1, to the cycles already performed by the applicable life-limited part(s). - Recalculate the remaining cycles of the part(s). - Recalculate the remaining cycles of the module. YES NO Is the ASLL exceeded? Send back the module in a Repair Center approved by Safran Helicopter Engines within 10 flight hours. Is the remaining cycles of the module lower than 200 cycles? NO The module can be operated until it reaches the ASLL + 400 cycles. The module can be operated until it reaches the ASLL. Record the application of this Mandatory SB, refer to paragraph 2.6.4. YES NO Is the ASLL exceeded by more than 400 cycles? The module can continue to be operated for additional 400 cycles maximum. YES Record the application of this Mandatory SB, refer to paragraph 2.6.4. NO SB VERSION B §2 - 3/5 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 2.6. Instructions on how to do the procedure 2.6.1. Implementation This Mandatory SB does not necessitate removal of the engine. 2.6.2. Operating instructions
Show full textShow less
2.6.2.1. On each module M02 and M03, make sure that one or several parts listed in the table in the Appendix 1 are installed. 2.6.2.2. If one or several parts are installed in the module, add the number of supplementary cycles, stated in the table in the Appendix 1, to the number of cycles already performed by the part(s), given in the log card of the applicable module. Corrected cycles = Performed cycles + Supplementary cycles 2.6.2.3. Then recalculate the remaining cycles of the part by deducting the new total number of performed cycles from its authorized in-service life limit declared in the Maintenance Manual of the applicable variant, task 05-10-01-200-801. Part remaining cycles = Authorized in-service life limit - Corrected cycles 2.6.2.4. Find the remaining cycles of the module by taking the minimum value of the remaining cycles of the module parts. Module remaining cycles = minimum (Remaining cycles for LLP 1, Remaining cycles for LLP 2…) Signet1 Identification of the life-limited parts of the module SB VERSION B §2 - 4/5 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 2.6.2.5. If the authorized in-service life limit is exceeded by less than 400 cycles, the engine can be kept in service until it reaches the authorized in-service life limit +400 cycles. If after calculation, the remaining cycles do not allow to continue to operate the engine for at least 10 flight hours, the module can be treated in accordance with paragraph 2.6.2.6. 2.6.2.6. If the authorized in-service life limit is exceeded by 400 cycles or more, the module must be removed within 10 flight hours and sent back to a Repair Center approved by Safran Helicopter Engines. 2.6.2.7. If the new remaining cycles are lower than 200 cycles, the module can continue to operate for a maximum of 400 cycles, before being sent back to a Repair Center approved by Safran Helicopter Engines. 2.6.2.8. If the new remaining cycles are higher than 200 cycles, the module can be kept in service until it reaches the authorized in-service life limit. Note: This operating instruction is not applicable for the modules listed in the Appendix 2 which only concern the operator subject to the application of the DGA Airworthiness Directive ATvCN No. 2144- 23/DT/ASA/PRA. 2.6.3. Reconditioning and checks Not applicable. 2.6.4. Identification Refer to the Guides U441 and U015 for instructions on how to record the engine log book and the log cards. 2.6.4.1. Record the application of this Mandatory SB: - On the log cards of the modules M02 and M03 in the table below. - In sections A and E of the engine log book, if the module is installed. Reminder: This Mandatory Service Bulletin must be reported even if no module part is mentioned in the Appendix 1. Signet1 SB VERSION B §2 - 5/5 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 2.6.4.2. Update the remaining status. - In sections A and E of the engine log book, if the module is installed. - On the log cards of the modules M02 and M03 in the table below. Note: Do not correct the number of gas generator cycles done by the module or the engine. 2.6.4.3. Send back the fully-completed compliance certificate, links to the digital document EngineLife Customer Portal: Certificate_5.1_SB_A298_72_0837_EN_B or 2.7. Weight and balance Not applicable. End of Section §2 “Procedure done at the operator’s site or at a Maintenance Center approved for Level 1, 2” ENTRETIEN / MAINTENANCE TRAVAUX EFFECTUES WORKS CARRIED OUT EFFECTUES CARRIED OUT OPERATEUR OPERATOR Date Signature - Tampon / Stamp HEURES HOURS CYCLES GEN GG TL FT Application of MSB A298 72 0837 Correction of CSN1 for Gas Generator LLP (M02 and M03) / Signet1 1 st stage Axial Wheel Injection Wheel Centrifugal Impeller 1 st stage HP disk 2 nd stage HP disk 2 nd stage Axial Wheel 3 rd stage Axial Wheel new remaining xx/xx/2023 new total OU / OR 1st stage Axial Wheel Injection Wheel Centrifugal Impeller 1st stage HP turbine disk 2nd stage HP turbine disk 2nd stage Axial Wheel 3rd stage Axial Wheel new remaining xx/xx/2023 new total OU / OR SB VERSION B §3 - 1/1 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 3. PROCEDURE DONE AT A MAINTENANCE CENTER APPROVED FOR LEVEL 3 OR AT THE OPERATOR’S SITE BY A MAINTENANCE CENTER APPROVED FOR LEVEL 3 Refer to the paragraphs of section §2 related to the Maintenance Centers approved for Level 1, 2. End of section §3 “Procedure done AT a maintenance center approved for level 3 OR AT THE OPERATOR’S SITE BY a Maintenance Center approved for Level 3” Signet1 SB VERSION B §4 - 1/3 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 4. PROCEDURE DONE AT A REPAIR CENTER APPROVED FOR LEVEL 4 4.1. Manpower • Personnel of approved Repair Center. • Time calculated by the Repair Center for this level of intervention. 4.2. Tools / Parts Refer to the MAKILA 1 Overhaul Manual. 4.3. Parts information 4.3.1. Basic information Not applicable. 4.3.2. List of parts Not applicable. 4.3.3. Supply conditions Not applicable. 4.4. Procedures Update the cyclic consumption values, refer to paragraph 4.6. Signet1 SB VERSION B §4 - 2/3 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 4.5. Block diagram for this SB ASLL.: Authorized in-Service Life Limit declared in the Maintenance Manual of the applicable variant, task 05-10-01-200-801. Is the part listed in the Appendix 1? YES For each life-limited part of MAKILA 1 modules M02 and M03 in stock or WIP (stand-alone parts or installed on module) - Add the supplementary cycle value, given in the Appendix 1, to the cycles already performed by the part - Recalculate the related remaining cycles. YES NO Contact Safran Helicopter Engines. Is the part installed on a module listed in the Appendix 2? Is the application of the ATvCN 2144- 23/DT/ASA/PRA given on the module log card? No further action is required. YES NO NO - Record the application of this Mandatory SB, refer to paragraph 4.6.4. - Follow the overhaul manual instructions related to LLP. SB VERSION B §4 - 3/3 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 4.6. Instructions on how to do the procedure 4.6.1. Implementation Not applicable. 4.6.2. Operating instructions For each life limited part of MAKILA 1 module M02 and M03 in stock or WIP: 4.6.2.1. Check if the part is listed in the Appendix 1 of this Mandatory Service Bulletin. 4.6.2.1.1. If the part is listed in Appendix 1, add the number of cycles given in the Appendix 1 to the cycles already performed. Record the new cycle value of the part and follow the instructions of the Engine Overhaul Manual regarding the LLP. 4.6.2.1.2. If the part is not listed in Appendix 1, check if the part is installed on a module listed in Appendix 2. 4.6.2.2. For the parts listed on modules in the Appendix 2. Check the application of the ATvCN 2144-23/DT/ASA/PRA in the log card: - If the ATvCN is applied, record the application of this Mandatory Service Bulletin, refer to paragraph 4.6.4. - If the ATvCN is not applied, contact your Safran Helicopter Engines representative. 4.6.2.3. For the part and module not listed in either Appendix 1 or Appendix 2, no additional action is necessary. 4.6.3. Reconditioning and checks Not applicable. 4.6.4. Identification Refer to the Guides U441 and U015 for instructions on how to record the engine log book and the log cards. 4.6.4.1. For modules M02 and M03, record the application of this Mandatory Service Bulletin on the log cards. 4.6.4.2. For isolated parts, record the application of this Mandatory Service Bulletin and the new values of cumulated cycles and remaining cycles in your appropriate systems or documents. 4.6.4.3. Send back the fully-completed compliance certificate, links to the digital document EngineLife Customer Portal: Certificate_5.1_SB_A298_72_0837_EN_B or 4.7. Weight and balance Not applicable. End of Section §4 “Procedure done at a Repair Center approved for Level 4” SB VERSION B §5 - 1/6 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY §1.GENERAL §2.LEVEL 1, 2 §3.LEVEL 3 §4.LEVEL 4 §5.CERTIFICATES 5.1- Compliance certificate of Mandatory SB No. A298 72 0837 - LEVEL 1, 2, 3, 4 Important: Fill in the compliance certificate after application of the instructions given in this SB. Mail or email it to: SAFRAN HELICOPTER ENGINES Equipe Administration Base installée / Fleet Data Administrator Team, BP 25 40220 TARNOS - France Email: data-fleet.fr.she@safrangroup.com Equipment information Customer Aircraft S/N S/N P/N TSN* CSN HP* CSN PT* Engine Checked module M02 Axial wheel, 1st stage Axial wheel, 2nd stage Axial wheel, 3rd stage Checked module M03 Centrifugal impeller Injection wheel HP turbine disk, 1st stage HP turbine disk, 2nd stage * TSN = Time Since New CSN = Cycles Since New - After correction for LLPs whose life limit was corrected I certify that the above-mentioned modules have been checked according to this Mandatory SB. Date [DD/MMMM (letter)/YYYY] Comments Signet1 SB VERSION B §5 - 2/6 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY APPENDIX 1 MODULE M02 AXIAL WHEEL 1 AXIAL WHEEL 2 LLP S/N Additional cycles LLP S/N Additional cycles 55FRF 125.82 808FT Contact SHE* 83FRF Contact SHE* 1031FB 2357.64 153FRF 407.7 1036FB 1994.22 162FRF 2697.84 1110FB 476.82 191FRF 1204.74 1121FB 1393.2 203FRF 676.62 1166FB 589.14 226OTT 1230.66 1169FB 1612.44 229FRF 42.12 1269FB 1023.84 234FRF 1115.64 1453FB 886.68 235FRF 562.14 1464FB 1185.84 346FB 411.48 1793FB 1834.38 360FRF 101.52 1943FB 1749.06 371FB 1763.64 1958FB 729 395FRF 34.02 2055FB 743.04 401OTT 135 2087FB 922.941 437OTT 236.52 2376FB 1691.28 445OTT 172.26 2558FB 578.88 456OTT 68.58 473OTT 80.46 482FB 718.74 484FB 288.36 501FB 1175.04 514FB 2636.28 524FB 70.2 548FB 1413.18 555FB 1481.22 596FB 622.08 605FB 256.5 643FB 1299.78 645FB 846.72 803FT 1942.38 LLP S/N Additional cycles LLP S/N Additional cycles 178OTT Contact SHE* 2027FB 297.54 227FB Contact SHE* 2090FB 80.46 256OTT 1486.62 2092FB 578.88 263FB 2732.94 2117FB 49.68 310FB 1711.8 2154FB 562.14 326FB 1831.14 2156FB 221.4 417FB 1130.22 2160FB 160.92 487FB 1108.62 2176FB 219.78 493FB 1595.16 515FB 1506.6 528FB 1703.7 547FT 1559.52 579FT 1750.14 599FT 1360.26 604FT 1321.38 612FB 1301.94 622FB 1923.48 632FT 2636.28 682FB 1810.62 810FT 589.14 911FB 989.28 1027FT 1839.78 1077FT 1270.08 1091FT 239.76 1228FB 412.56 1540FB 239.76 1561FB 743.04 1565FB 1380.24 1759FB 286.74 1775FB 799.2 1874FB 552.42 1924FB 254.34 1974FB 79.92 *For the parts with no “additional cycle” information, please contact your Safran Helicopter Engines representative to get the cycle information to take into account. SB VERSION B §5 - 3/6 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY APPENDIX 1 MODULE M02 AXIAL WHEEL 3 LLP S/N Additional cycles LLP S/N Additional cycles 150OTT 434.7 962FT 1522.26 154FT 3669.84 1339FB 2139.48 158OTT 286.74 1399FB 412.56 159OTT 798.12 1518FB 1536.3 170OTT 756.54 1590FB 2189.16 196OTT 135 1671FB 913.14 233FT 1596.78 1686FB 767.88 262FT 3302.64 1815FB 1203.66 375OTT 989.28 1897FB 820.26 428OTT 250.56 1912FB 680.94 435OTT 219.78 2142FB 91.8 452FB 2636.28 2191FB 320.22 496FB 1457.46 2261FB 79.92 521FB 1504.44 2303FB 578.88 525FB 1346.76 2304FB 80.46 534FB 1703.7 2335FB 221.4 535FB 1413.18 2342FB 172.26 556FT 1810.62 2441FB 49.68 568FT 1700.46 2452FB 160.92 581FB 1711.8 2460FB 562.14 582FB 1003.86 583FT 1515.78 597FB 1507.68 612FT 1360.26 628FT 1595.16 629FT 1712.88 648FB 976.86 659FT 1831.14 679FT 1591.92 791FT 1792.8 907FB 4159.62 936FB 589.14 939FT 1515.78 SER959FT 1202.04 SB VERSION B §5 - 4/6 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY APPENDIX 1 MODULE M03 HP TURBINE DISK 1 HP TURBINE DISK 2 LLP S/N Additional cycles ADA8682YC 2534.22 ADA8809AD 3198.42 ADA9756YC 1992.06 ADA9858YC 1942.38 ADA9867YC 2977.02 ADB1712AD 1887.84 ADB1732AD 2123.82 ADB3016YC 1624.86 ADB3020YC 1806.84 ADB3727YC 1520.64 ADB4764AD 1831.14 ADB5379AD 2029.86 ADB5875YC 2817.936 ADB5877YC 2544.561 ADB5878YC 1954.8 ADB5994YC 2291.76 ADB6114AD 1802.52 ADB6239YC 1711.8 ADB6248YC 999.54 ADB6647YC 1525.23 ADC1694YC 2636.82 ADC9306YC 1392.66 ADC9468YC 875.88 ADC9471YC 834.3 ADC9479YC 710.64 ADD3176YC 1185.84 ADD413AD 817.02 ADE2474YC 1391.04 ADE2484YC 2687.04 ADE2800YC 1422.36 ADE3284YC 476.82 ADH7969AD 1328.94 ADH9180AD 1043.82 ADHA269AD 1197.18 ADHB335AD 37.26 ADHE709AD 945 LLP S/N Additional cycles 250MW 433.08 ADA7008YC 3198.42 ADA8889AD 3288.06 ADA9784YC 2534.22 ADB0616YC 1831.14 ADB0931YC 1887.84 ADB0933YC 2104.38 ADB1333YC 2123.82 ADB1384AD 2977.02 ADB2286AD 1992.06 ADB2290AD 1697.76 ADB4863AD 2137.86 ADB4865AD 1624.86 ADB4867AD 2029.86 ADB5796YC 2291.76 ADB5819YC 2817.936 ADB6009YC 2544.561 ADB6012YC 1703.7 ADB6473AD 999.54 ADB6499YC 1711.8 ADB6796YC 1525.23 ADB7066YC 2636.82 ADD0741YC 834.3 ADD0757AD 1392.66 ADE0444YC 1185.84 ADE1584YC 2687.04 ADE4291YC 1328.94 ADE4612YC 1043.82 ADH4428AD 1391.04 ADH5122AD 476.82 ADHA422AD 1197.18 ADHC267AD 37.26 F341AD 945 H041AD 244.08 In version A of this Service Bulletin, one character of some disc S/Ns was missing. The corrected S/Ns are underlined and the added character is written in bold and in red. SB VERSION B §5 - 5/6 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY APPENDIX 1 MODULE M03 INJECTION WHEEL CENTRIFUGAL IMPELLER LLP S/N Additional cycles LLP S/N Additional cycles 12GXG 1525.5 733AD 1595.16 16XG 1831.14 828AD 1887.84 76FRF 945 839AD 1697.76 107XG 2029.86 841AD 1559.52 113FRF 244.08 907AD 1756.62 122XG 1624.86 985AD 1618.92 R0198CTF 104.49 1124AD 1362.42 211XG 1711.8 1135AD 1392.66 215XG 1347.3 1153AD 875.88 230XG 999.54 1206AD 710.64 231XG 1394.82 1326AD 2042.28 S0246CTF 578.88 1658AD 2149.2 250FRF 203.04 2126AD 1197.18 252XG 1810.62 2356 AD 1328.94 261AD 2104.38 2928AD 286.74 263XG 1923.48 3209AD 434.16 273XG 1301.94 3478AD 433.08 293XG 2075.76 R4744CTF 562.14 627XG 834.3 720AD 1515.78 LLP S/N Additional cycles LLP S/N Additionnal cycles 45XG 1392.66 408XG 1197.18 50XG 834.3 436FT 637.74 95FB 148.5 486XG 37.26 114UP 2271.24 557XG 369.9 153FRF 244.62 562XG 203.04 175FT 5375.16 582FT 1340.82 176FB 104.49 694FT 999.54 184UP 2636.82 733FT 344.52 256FB 562.14 749FT 1711.8 323FRF 83.16 822FT 1430.46 326XG 94.5 1270FT 476.82 376FT 2977.02 1328FT 1797.66 SB VERSION B §5 - 6/6 19 December 2023 SERVICE BULLETIN No. A298 72 0837 ALERT MANDATORY APPENDIX 2 The modules listed in this appendix 2 concern only the operator subject to the application of the DGA Airworthiness Instruction ATvCN no. 2144-23/DT/ASA/PRA. MAKILA 1 A1 MODULES M02 S/N MODULES M03 S/N 5 824 969 55 840 1093 221 841 1099 244 844 1112 264 844 1140 269 847 1147 278 849 1224 281 850 1225 287 855 1226 302 865 1233 339 869 1234 352 873 1235 390 875 1246 399 878 1259 668 881 1283 669 882 1397 701 883 1432 702 890 1448 727 892 1494 728 916 1564 749 917 1754 759 922 1789 760 925 1792 768 927 1832 770 934 1889 777 938 2010 785 947 3031 788 956 242 813 959 369 814 960 221 2321 2551 302 2324 2556 1072 2331 2560 1112 2338 2565 1200 2343 2568 1250 2345 2578 2002 2346 2581 2141 2348 2602 2158 2351 2617 2162 2354 2619 2170 2355 2693 2175 2356 2694 2176 2360 2695 2201 2363 2699 2202 2365 2700 2223 2375 2701 2231 2391 2703 2233 2399 2706 2242 2400 2757 2244 2402 2781 2251 2412 2830 2252 2413 2930 2262 2414 2997 2271 2419 3012 2289 2421 3013 2290 2431 3027 2300 2433 3058 2302 2441 3069 2312 2443 3145 2318 2459 2070 Since version A of this Service Bulletin: modification to this list as follows: removal of a module S/N that was given two times, removal of two specified modules not related to the ATvCN No. 2144-23/DT/ASA/PRA and addition of two other module S/Ns. For these modules, the operator must record the application of this Service Bulletin in the engine log book after application of the ATvCN No. 2144-23/DT/ASA/PRA.