# Boeing Special Attention Service Bulletin 747-35-2134: No revision named - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2018-0362; AD 2018-09-12 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Special Attention Service Bulletin 747-35-2134](https://openairdocs.org/service-documents/boeing/sb-747-35-2134.md) - Title as filed: SB-747-35-2134-00-- - Pages: 90 - PDF: https://openairdocs.org/files/sha256/be/c0/bec0b4eb279a558e2dc23683aa77e8e53529bacdd79b7c40bc3342b7e45a9307 - Page: https://openairdocs.org/service-documents/boeing/sb-747-35-2134/file/bec0b4eb279a ## 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 Commercial Airplanes 747 Service Bulletin SPECIAL ATTENTION Number: 747-35-2134 Original Issue: November 22, 2017 ATA System: 3521 SUBJECT: OXYGEN - Passenger Oxygen System - Low Pressure Oxygen System Hose Assembly Replacement and Hose Assembly Inspection Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws. 9E991ECCN: Copyright © 2017 Boeing. Unpublished Work. All Rights Reserved. Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company. Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing. Original Issue: November 22, 2017 747-35-2134 1 of 90 4.0 ### Page 2 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 2 of 90 BOEING SERVICE BULLETIN 747-35-2134 BLANK PAGE ### Page 3 Table of Contents Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2. Data Supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 20 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 M. Software Accomplishment Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 C. Parts Necessary for Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1. Kits/Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2. Parts and Materials Supplied by the Operator . . . . . . . . . . . . . . . . . . . . . . . . 27 3. Parts Modified and Reidentified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4. Parts Removed and Not Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 27 3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 FIGURE 1: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 1] . . . . . . . . . . 36 FIGURE 2: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 2] . . . . . . . . . . 39 FIGURE 3: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 3] . . . . . . . . . . 42 FIGURE 4: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 4] . . . . . . . . . . 45 FIGURE 5: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 5] . . . . . . . . . . 48 FIGURE 6: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 6] . . . . . . . . . . 51 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 3 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 4 FIGURE 7: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 7] . . . . . . . . . . 55 FIGURE 8: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 8] . . . . . . . . . . 59 FIGURE 9: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 9] . . . . . . . . . . 62 FIGURE 10: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 10] . . . . . . . . . 65 FIGURE 11: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 11] . . . . . . . . . 69 FIGURE 12: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 12] . . . . . . . . . 73 FIGURE 13: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 13] . . . . . . . . . 77 FIGURE 14: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT [Group 15] . . . . . . . . . 81 FIGURE 15: UPPER DECK AND MAIN DECK PASSENGER COMPARTMENTS, ABOVE CEILING - LOW PRESSURE OXYGEN HOSE ASSEMBLY - GENERAL VISUAL INSPECTION . . . . . . 84 APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 1: LOW PRESSURE OXYGEN SYSTEM INSPECTION AND FLEXIBLE HOSE ASSEMBLIES REPLACEMENT [Group 1-13, 15] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 APPENDIX B: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 2: LOW PRESSURE OXYGEN HOSE ASSEMBLY INSPECTION [Group 14] . . . . . . . . . . . . . . . . . . . 86 APPENDIX C: LOW PRESSURE OXYGEN HOSE ASSEMBLY CLEARANCES . . . . . . . . . . . . . . 87 APPENDIX D: PART DEMAND INTENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 4 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 5 Commercial Airplanes 747 Service Bulletin SPECIAL ATTENTION SummaryNumber: 747-35-2134Original Issue: November 22, 2017 ATA System: 3521 SUBJECT: OXYGEN - Passenger Oxygen System - Low Pressure Oxygen System Hose Assembly Replacement and Hose Assembly Inspection BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS DOCUMENT IMMEDIATELY. CONCURRENT REQUIREMENTS None. BACKGROUND Accomplishment of this service bulletin will remove the possibility that the low pressure oxygen system is electrically conductive. Oxygen hose assemblies that have the possibility of being electrically conductive supply a path to ground when minimum clearances are not kept during the occurrence of an electrical fault. If this service bulletin is not done the low-pressure oxygen flex hoses can potentially be conductive, become heated from electrical faults and cause or contribute to an oxygen-fed fire event in the passenger cabin. As a result of a fire in the flight deck of a 777 airplane which was suspected to be caused by the crew oxygen system, the crew and gaseous passenger oxygen systems on the 777 airplane were updated to remove any flexible hose assemblies that were not explicitly non-conductive. While no fire caused by a gaseous oxygen system has been reported on a 747 airplane, as an extra precaution flexible conductive hose assemblies in select locations are being replaced with non-conductive hose assemblies to make sure that in the event of an electrical fault, such as an unintended short circuit, it will not be possible for oxygen system to give a path to ground. The service bulletin provides instructions to replace specified flexible hose assemblies with non-conductive flexible hose assemblies at multiple locations to make sure that if there is an electrical fault there will not be a direct path to ground through the passenger oxygen system. This service bulletin also gives instructions to make sure that the oxygen system low pressure hose assemblies have minimum clearance from adjacent structure and systems. Boeing Service Related Problem (SRP) 747-SRP-35-0063 is related to this service bulletin. Boeing Fleet Team Digest (FTD) 747 FTD 35-14003 is related to this service bulletin. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information. ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedNoSpares Affected Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 5 of 90 ### Page 6 ReferenceAffectedPlanning Data Paragraph 1.E., ComplianceYesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Air- plane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator NoOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION (PRR 85901-147RS) Group 1-13, 15: Get access to the low pressure oxygen system above the ceiling of the main deck and upper deck passenger compartments. Replace specified conductive hose assemblies with non-conductive ones. Do a general visual inspection of low pressure oxygen system to make sure that the oxygen system low pressure hose assemblies have minimum clearance from adjacent structure and systems. Test the low pressure oxygen system. Group 14: Get access to the low pressure oxygen system above the ceiling of the main deck and upper deck passenger compartments. Do a general visual inspection of low pressure oxygen system to make sure that the oxygen system low pressure hose assemblies have minimum clearance from adjacent structure and systems. If equipment was disconnected, test the low pressure oxygen system. EFFECTIVITY 747-200B/300/400 Airplane(s) with a therapeutic oxygen option installed. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s). COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory. Refer to Paragraph 1.E., Compliance. INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes and inspection procedures given in this service bulletin. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 6 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 7 (OCR) BOEING SERVICE BULLETIN 747-35-2134 MANPOWER Refer to Paragraph 1.G., Manpower. MATERIAL INFORMATION Boeing Supplied Kits/Parts. Refer to Paragraph 2.A., Material - Price and Availability. Operators are encouraged to complete the survey provided in APPENDIX D of this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts. GROUP 1 THRU 13: REPLACE SPECIFIED CONDUCTIVE HOSE ASSEMBLIES WITH NON-CONDUCTIVE HOSE ASSEMBLIES GROUP 15 REPLACE SPECIFIED CONDUCTIVE HOSE ASSEMBLIES WITH NON-CONDUCTIVE HOSE ASSEMBLIES DO A GENERAL VISUAL INSPECTION OF THE LOW PRESSURE OXYGEN SYSTEM EQUIPMENT TO MAKE SURE HOSE ASSEMBLIES HAVE THE MINIMUM CLEARANCE FROM ADJACENT STRUCTURE AND SYSTEM. 2574542 Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 7 of 90 ### Page 8 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 8 of 90 BOEING SERVICE BULLETIN 747-35-2134 BLANK PAGE ### Page 9 Commercial Airplanes 747 Service Bulletin SPECIAL ATTENTION Number: 747-35-2134 Original Issue: November 22, 2017 ATA System: 3521 SUBJECT: OXYGEN - Passenger Oxygen System - Low Pressure Oxygen System Hose Assembly Replacement and Hose Assembly Inspection BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS DOCUMENT IMMEDIATELY. 1. PLANNING INFORMATION A. Effectivity 1. Airplanes Refer to Service Bulletin Index D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is applicable to 747-200B/300/400 Airplanes with a therapeutic oxygen option installed, line numbers 292-1331, in 15 Groups. The Variable Numbers and Group Information for the applicable airplanes is given below. Refer to PRR 85901-147RS for data about this change. DESCRIPTIONCONFIGURATIONGROUP 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -1 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -2 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -3 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -4 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -5 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -6 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 9 of 90 ### Page 10 DESCRIPTIONCONFIGURATIONGROUP 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -7 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -8 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -9 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -10 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -11 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -12 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -13 747-400 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -14 747-200B/300 Airplanes delivered with a unique configuration of flexible oxygen hoses for the low pressure oxygen system. -15 Airplane Models: 747-200B, 747-300, 747-400 GroupVariable Number 15RD131 - RD132 15RD143 14RF001 - RF006 5RM010 10RM036 10RM038 - RM040 2RM096 - RM097 2RM136 - RM145 8RM158 2RM261 - RM264 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 10 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 11 GroupVariable Number 9RM331 - RM333 4RM351 - RM355 10RM366 - RM367 3RM426 15RS316 - RS320 1RT102 7RT151 2RT471 2RT474 - RT475 2RT477 - RT479 2RT481 2RT483 - RT487 2RT489 - RT490 2RT494 2RT496 - RT499 11RT552 - RT554 12RT555 - RT556 13RT561 - RT564 13RT566 - RT567 10RT744 10RT748 - RT749 10RU016 - RU017 6RU061 - RU062 2RU121 - RU132 2. Spares Affected None. B. Concurrent Requirements None. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 11 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 12 C. Reason Accomplishment of this service bulletin will remove the possibility that the low pressure oxygen system is electrically conductive. Oxygen hose assemblies that have the possibility of being electrically conductive supply a path to ground when minimum clearances are not kept during the occurrence of an electrical fault. If this service bulletin is not done the low-pressure oxygen flex hoses can potentially be conductive, become heated from electrical faults and cause or contribute to an oxygen-fed fire event in the passenger cabin. As a result of a fire in the flight deck of a 777 airplane which was suspected to be caused by the crew oxygen system, the crew and gaseous passenger oxygen systems on the 777 airplane were updated to remove any flexible hose assemblies that were not explicitly non-conductive. While no fire caused by a gaseous oxygen system has been reported on a 747 airplane, as an extra precaution flexible conductive hose assemblies in select locations are being replaced with non-conductive hose assemblies to make sure that in the unusual occurrence of an electrical fault, such as an unintended short circuit, it will not be possible for oxygen system to give a path to ground. The service bulletin provides instructions to replace specified flexible hose assemblies with non-conductive flexible hose assemblies at multiple locations to make sure that if there is an electrical fault there will not be a direct path to ground through the passenger oxygen system. This service bulletin also gives instructions to make sure that the oxygen system low pressure hose assemblies have minimum clearance from adjacent structure and systems. Boeing Service Related Problem (SRP) 747-SRP-35-0063 is related to this service bulletin. Boeing Fleet Team Digest (FTD) 747 FTD 35-14003 is related to this service bulletin. D. Description Group 1-13, 15: Get access to the low pressure oxygen system above the ceiling of the main deck and upper deck passenger compartments. Replace specified conductive hose assemblies with non-conductive ones. Do a general visual inspection of low pressure oxygen system to make sure that the oxygen system low pressure hose assemblies have minimum clearance from adjacent structure and systems. Test the low pressure oxygen system. Group 14: Get access to the low pressure oxygen system above the ceiling of the main deck and upper deck passenger compartments. Do a general visual inspection of low pressure oxygen system to make sure that the oxygen system low pressure hose assemblies have minimum clearance from adjacent structure and systems. If equipment was disconnected, test the low pressure oxygen system. The work in this service bulletin is done in the maintenance zone(s) given below. Group 1-14: Affected Maintenance Zones ZoneModel 211, 212, 223, 224, 225, 226, 231, 232, 243, 244, 253, 254, 263, 264, 273, 274 747-400 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 12 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 13 Group 15: Affected Maintenance Zones ZoneModel 211, 212, 223, 224, 225, 226, 231, 232, 233, 234, 243, 244, 253, 254, 263, 264, 273, 274 747-200B, 747-300 E. Compliance The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory. Group 1-13, 15: Accomplish the required actions, based on the applicable conditions in Table 1, in accordance with Paragraph 3. Accomplishment Instructions. Group 14: Accomplish the required actions, based on the applicable conditions in Table 2, in accordance with Paragraph 3. Accomplishment Instructions. Group 1-13, 15: A logic diagram showing compliance tasks and compliance times is included as an aid in APPENDIX A. Group 14: A logic diagram showing compliance tasks and compliance times is included as an aid in APPENDIX B. Group 1-13, 15: Table 1: LOW PRESSURE OXYGEN SYSTEM INSPECTION AND FLEXIBLE HOSE ASSEMBLIES REPLACEMENT Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Within 72 months after the Original Issue date of this service bulletin. Do PART 1: LOW PRES- SURE OXYGEN HOSE - REPLACEMENT (a) All Airplanes. Do PART 2: LOW PRES- SURE OXYGEN SYS- TEM HOSE ASSEMBLY - GENERAL VISUAL IN- SPECTION --No further action re- quired. CONDITION 1: ALL HOSE ASSEMBLIES HAVE MORE THAN OR EQUAL TO THE MINIMUM CLEARANCE Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 13 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 14 Group 1-13, 15: Table 1: LOW PRESSURE OXYGEN SYSTEM INSPECTION AND FLEXIBLE HOSE ASSEMBLIES REPLACEMENT Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Before further flight. Adjust to make the mini- mum clearances agree with the dimension(s) specified in APPENDIX C. (a) CONDITION 2: ONE OR MORE HOSE ASSEM- BLIES HAVE LESS THAN THE MINIMUM CLEAR- ANCE (a) Refer to Table 3 for Oxygen System Low Pressure Test. Group 14: Table 2: LOW PRESSURE OXYGEN SYSTEM INSPECTION Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Within 72 months after the Original Issue date of this service bulletin. Do PART 2: LOW PRES- SURE OXYGEN SYS- TEM HOSE ASSEMBLY - GENERAL VISUAL IN- SPECTION All Airplanes. --No further action re- quired. CONDITION 1: ALL HOSE ASSEMBLIES HAVE MORE THAN OR EQUAL TO THE MINIMUM CLEARANCE -Before further flight. Adjust to make the mini- mum clearances agree with the dimension(s) specified in APPENDIX C. (a) CONDITION 2: ONE OR MORE HOSE ASSEM- BLIES HAVE LESS THAN THE MINIMUM CLEAR- ANCE (a) Refer to Table 3 for Oxygen System Low Pressure Test. Table 3: OXYGEN SYSTEM LOW PRESSURE LEAK TEST Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Before further flight. Do an Oxygen System Low Pressure Leak Test and applicable corrective actions. All Airplanes Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 14 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 15 F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. G. Manpower The table below shows an estimate of the task hours necessary to do this service bulletin for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator task hour data if necessary. The estimate does not include lost time. These are some examples of lost time: • Time to adjust to the workplace • Time to schedule the work • Time to inspect the work • Time to cure the materials • Time to make the parts • Time to find the tools Group 1: Elapsed HoursTask HoursNumber of PersonsTask 4.008.002Open Access 2.004.002FIGURE 1 0.501.002FIGURE 15 0.250.502Leak Detection Test 4.008.002Close Access 10.7521.50TOTAL FOR EACH AIRPLANE Group 2: Elapsed HoursTask HoursNumber of PersonsTask 4.008.002Open Access 2.004.002FIGURE 2 0.501.002FIGURE 15 0.250.502Leak Detection Test 4.008.002Close Access Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 15 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 16 Group 2: Elapsed HoursTask HoursNumber of PersonsTask 10.7521.50TOTAL FOR EACH AIRPLANE Group 3: Elapsed HoursTask HoursNumber of PersonsTask 4.008.002Open Access 2.004.002FIGURE 3 0.501.002FIGURE 15 0.250.502Leak Detection Test 4.008.002Close Access 10.7521.50TOTAL FOR EACH AIRPLANE Group 4: Elapsed HoursTask HoursNumber of PersonsTask 4.008.002Open Access 2.004.002FIGURE 4 0.501.002FIGURE 15 0.250.502Leak Detection Test 4.008.002Close Access 10.7521.50TOTAL FOR EACH AIRPLANE Group 5: Elapsed HoursTask HoursNumber of PersonsTask 2.004.002Open Access 1.503.002FIGURE 5 0.501.002FIGURE 15 0.250.502Leak Detection Test 2.004.002Close Access 6.2512.50TOTAL FOR EACH AIRPLANE Group 6: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 16 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 17 Group 6: Elapsed HoursTask HoursNumber of PersonsTask 2.254.502FIGURE 6 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 9.0018.00TOTAL FOR EACH AIRPLANE Group 7: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 2.004.002FIGURE 7 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 8.7517.50TOTAL FOR EACH AIRPLANE Group 8: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 2.004.002FIGURE 8 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 8.7517.50TOTAL FOR EACH AIRPLANE Group 9: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 1.753.502FIGURE 9 0.501.002FIGURE 15 .250.502Leak Detection Test 3.006.002Close Access 8.5017.00TOTAL FOR EACH AIRPLANE Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 17 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 18 Group 10: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 1.753.502FIGURE 10 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 8.5017.00TOTAL FOR EACH AIRPLANE Group 11: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 2.004.002FIGURE 11 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 8.7517.50TOTAL FOR EACH AIRPLANE Group 12: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 2.254.502FIGURE 12 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 9.0018.00TOTAL FOR EACH AIRPLANE Group 13: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 2.254.502FIGURE 13 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 18 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 19 Group 13: Elapsed HoursTask HoursNumber of PersonsTask 9.0018.00TOTAL FOR EACH AIRPLANE Group 14: Elapsed HoursTask HoursNumber of PersonsTask 1.002.002Open Access 0.501.002FIGURE 15 0.250.502Leak Detection Test(a) 1.002.002Close Access 2.505.00TOTAL FOR EACH AIRPLANE (a) This is only necessary if a hose had to be disconnected as a result of the in- spection. Group 15: Elapsed HoursTask HoursNumber of PersonsTask 3.006.002Open Access 1.753.502FIGURE 14 0.501.002FIGURE 15 0.250.502Leak Detection Test 3.006.002Close Access 8.5017.00TOTAL FOR EACH AIRPLANE H. Weight and Balance Changes None. I. Electrical Load Data Not changed. J. References 1. Existing Data: a. Engineering Change Memo PRR 85901-147RS b. Boeing Service Related Problem (SRP) 747-SRP-35-0063 c. Service Bulletin Index D6-30300 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 19 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 20 d. Standard Overhaul Practices Manual (SOPM) 20-50-01 e. 747 Fleet Team Digest (FTD) 35-14003 f. 747-100/200/300 Aircraft Maintenance Manual (AMM) 20-51-01, 25-22-01, 25-22-03, 25-22-04, 25-23-01, 25-23-04, 25-28-01, 35-00-00, 35-21-00 g. 747-400 Aircraft Maintenance Manual (AMM) 20-51-01, 25-22-01, 25-22-04, 25-23-01, 25-23-04, 25-28-01, 25-28-02, 25-28-23, 35-00-00, 35-21-00 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin: TitleDrawing Number OXYGEN TUBING & SPRT INSTL- MAIN DISTRIBUTION LOOP417U4371 OXY SYS & CONNECTION INSTL417U4403 OXYGEN SYSTEM CONNECTION INSTALLATION - MAIN DECK417U4405 OXYGEN SYSTEM CONNECTION INSTALLATION - MAIN DECK417U4428 OXYGEN TUBING INSTLS - PASSENGER OXY SYS65B68276 The table above lists applicable drawings used to prepare this service bulletin. The drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. The drawings may not be applicable to all airplane configurations or operators. K. Publications Affected 1. Publications: Chapter-SectionPublication 35-21747-100/200/300 Illustrated Parts Catalog 35-21747-400 Illustrated Parts Catalog 2. Damage Tolerance Based Structural Inspections: Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary. L. Interchangeability and Intermixability of Parts Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability information. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 20 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 21 M. Software Accomplishment Summary Not affected. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 21 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 22 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 22 of 90 BOEING SERVICE BULLETIN 747-35-2134 BLANK PAGE ### Page 23 2. MATERIAL INFORMATION A. Material - Price and Availability Boeing can supply the parts shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The parts are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States Dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or The Boeing PART Page 2. Fax to (206) 662-7145 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 23 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 24 Group 1-13, 15: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Original Issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the Original Issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNamePart Number $179.00(a)1October 23, 2017 HOSE ASSY38001-657 $143.001HOSE ASSY38001-658 $121.001HOSE ASSY38001-659 $114.001October 16, 2017 HOSE ASSY38001-660 $104.002HOSE ASSY38001-666 $229.001HOSE ASSY38001-667 $270.002HOSE ASSY38001-668 $86.001HOSE ASSY57034-16N120090 $92.002HOSE ASSY57034-16N120188 $219.001October 19, 2017 HOSE ASSY57034-16N120350 $310.001October 16, 2017 HOSE ASSY57034-24N120195 $467.001October 19, 2017 HOSE ASSY57034-24N120410 $159.001October 23, 2017 HOSE ASSY57034N13240 $115.002October 19, 2017 HOSE ASSY57034N25107 $139.001HOSE ASSY57034N25200 $149.002HOSE ASSY57034N25240 $157.002HOSE ASSY57034N35280 $85.001HOSE ASSY57034N53120 $83.002HOSE ASSY57034N55159 $115.001October 23, 2017 HOSE ASSY57034N65147 $229.001HOSE ASSY57034N73200 (a) Contact Boeing Spares. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 24 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 25 Group 1-13: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Original Issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the Original Issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNamePart Number (a)(a)(b)O-RING417U4205-1 (b)O-RING417U4205-2 (a) Contact Boeing Spares. (b) Readily available from Boeing Spares. Operators are encouraged to complete the survey provided in APPENDIX D of this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts. B. Industry Support Information Boeing warranty remedies are not available for the configuration changes and inspection procedures given in this service bulletin. C. Parts Necessary for Each Airplane 1. Kits/Parts To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability. NOTE: Parts and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by the Operator, are necessary for each airplane. Group 1-13, 15: NotesExisting Boeing Part Number (Supplier Part Number) NameQTYPart Number (a)(b)(c)60B50059-58 (38001-58)HOSE ASSY-38001-659 (a)(b)(c)60B50059-61 (38001-61)HOSE ASSY-38001-660 (a)(b)(c)60B50059-65 (38001-65)HOSE ASSY-38001-666 (a)(b)(c)60B50059-98 (38001-98)HOSE ASSY-38001-657 (a)(b)(c)60B50059-103 (38001-103)HOSE ASSY-38001-667 (a)(b)(c)60B50059-104 (38001-104)HOSE ASSY-38001-668 (a)(b)(c)60B50059-115 (38001-115)HOSE ASSY-57034-16N120090 (a)(b)(c)60B50059-116 (38001-116)HOSE ASSY-57034-24N120195 (a)(b)(c)60B50059-118 (38001-118)HOSE ASSY-57034-16N120188 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 25 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 26 Group 1-13, 15: NotesExisting Boeing Part Number (Supplier Part Number) NameQTYPart Number (a)(b)(c)60B50059-119 (38001-119)HOSE ASSY-38001-658 (a)(b)(c)60B50059-126 (38001-126)HOSE ASSY-57034-24N120410 (a)(b)(c)60B50059-127 (38001-127)HOSE ASSY-57034-16N120350 (a)(b)(c)S417U406-13240 (57034- 13240) HOSE ASSY-57034N13240 (a)(b)(c)S417U406-25107 (57034- 25107) HOSE ASSY-57034N25107 (a)(c)(c)S417U406-25200 (57034- 25200) HOSE ASSY-57034N25200 (a)(b)(c)S417U406-25240 (57034- 25240) HOSE ASSY-57034N25240 (a)(b)(c)S417U406-35280 (57034- 35280) HOSE ASSY-57034N35280 (a)(b)(c)S417U406-53120 (57034- 53120) HOSE ASSY-57034N53120 (a)(b)(c)S417U406-55159 (57034- 55159) HOSE ASSY-57034N55159 (a)(b)(c)S417U406-65147 (57034- 65147) HOSE ASSY-57034N65147 (a)(b)(c)S417U406-73200 (57034- 73200) HOSE ASSY-57034N73200 (a) Discard the existing part. (b) You cannot use the existing part to replace the new or changed part. (c) Refer to FIGURE 1 thru FIGURE 14, as applicable, for quantities. Group 1-13: NotesExisting Boeing Part Number NameQTYBoeing Part Num- ber (a)(b)(c)417U4205-1O-RING-417U4205-1 (a)(b)(c)417U4205-2O-RING-417U4205-2 (a) Discard the existing part. (b) You cannot use the existing part to replace the new or changed part. (c) Refer to FIGURE 1 thru FIGURE 13, as applicable, for quantities. A maximum of two O-rings are nec- essary for each applicable hose assembly. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 26 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 27 2. Parts and Materials Supplied by the Operator None. 3. Parts Modified and Reidentified None. 4. Parts Removed and Not Replaced None. D. Parts Necessary to Change Spares None. E. Special Tooling - Price and Availability None. F. Special Tooling Necessary to do this Service Bulletin No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine operator tool supply to make sure all necessary tools are available. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 27 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 28 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 28 of 90 BOEING SERVICE BULLETIN 747-35-2134 BLANK PAGE ### Page 29 3. ACCOMPLISHMENT INSTRUCTIONS A. GENERAL INFORMATION OPEN EXPOSURE OF THE OXYGEN SYSTEM MUST BE KEPT TO A MINIMUM TO PROTECT THE INTEGRITY OF THE OXYGEN SYSTEM. OPEN EXPOSURE TIME IS NOT TO BE MORE THAN 5 MINUTES. COVER AND SEAL OPEN LINES WITH A SUFFICIENT PLASTIC BAG, CAP OR PLUG TO PREVENT CONTAMINATION. CONTAMINATION CAN CAUSE A FIRE OR EXPLOSION IN AN OXYGEN SYSTEM WHICH MAY CAUSE INJURIES TO PERSONNEL AND DAMAGE EQUIPMENT. RETURN ANY CONTAMINATED EQUIPMENT TO VENDOR WARNING USE ONLY OXYGEN-CLEAN COMPONENTS IN THE OXYGEN SYSTEM. IF YOU DO NOT USE OXYGEN-CLEAN COMPONENTS, A FIRE OR AN EXPLOSION CAN OCCUR. THIS CAN CAUSE DAMAGE TO EQUIPMENT OR INJURIES TO PERSONS. WARNING MAKE SURE THAT THE OXYGEN SYSTEM IS DEACTIVATED AND ALL OXYGEN CYLINDERS ARE FULLY CLOSED. IF THE OXYGEN SYSTEM IS NOT DEACTIVATED AND ALL THE OXYGEN CYLINDERS ARE NOT FULLY CLOSED, THE OXYGEN SYSTEM COULD BE PRESSURIZED. IF WORK IS DONE ON A PRESSURIZED OXYGEN SYSTEM, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR. WARNING LOOSEN THE OXYGEN CONNECTIONS CAREFULLY. THE REMAINING OXYGEN CAN RELEASE WITH A LARGE FORCE AND CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE AIRPLANE AND EQUIPMENT. WARNING OXYGEN SYSTEM COMPONENTS REQUIRE SPECIAL CARE AND HANDLING PROCEDURES. BEFORE WORK IS DONE ON THE OXYGEN SYSTEM, REVIEW THE SAFETY AND MAINTENANCE PROCEDURES GIVEN IN 747-100/200/300 AMM 35-00-00 OR 747-400 AMM 35-00-00 PRIOR TO MODIFYING THE OXYGEN SYSTEM. CAUTION KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL, METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR OTHER ELECTRICAL DAMAGE. CAUTION FAILURE TO OBSERVE THESE SAFETY PRECAUTIONS AND MAINTENANCE INSTRUCTIONS COULD RESULT IN A FIRE OR EXPLOSION WHICH CAN CAUSE SERIOUS INJURY TO PERSONNEL AND SEVERE DAMAGE TO THE AIRPLANE AND EQUIPMENT. CAUTION NOTE: 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for definition of the acronyms. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 29 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 30 2. Obey all of the warnings and cautions given in the specified manual sections. 3. Unless shown differently, these dimensions and tolerances are used: – Linear dimensions are in inches – Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03 inch – Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch – Angular tolerance is plus or minus 2 degrees – Hole dimensions for standard solid rivets and fasteners are in Structural Repair Manual (SRM) Chapter 51 – Torque Values: — Values for airframe maintenance tasks are included in Chapter 20 of 747 Aircraft Maintenance Manual (AMM). — Non-standard torque values for maintenance tasks are included in the applicable installation step. 4. Use the approved fastener, process and material substitutions in accordance with SRM Chapter 51. 5. If the length of any fastener specified in this service bulletin does not meet installation standards given in SRM Chapter 51, then a fastener of the same specification, or an approved substitute, with a length which meets the installation standards given in SRM Chapter 51 may be used. In addition, washers may be installed for fastener grip length in accordance with SRM Chapter 51. Refer to SOPM 20-50-01 for alternate full threaded fasteners (screws) needed for installation in this service bulletin. 6. A General Visual Inspection is defined as: A visual examination of an interior or exterior area, installation or assembly to detect obvious damage, failure or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight or drop-light and may require removal or opening of access panels or doors. Stands, ladders or platforms may be required to gain proximity to the area being checked. 7. These work instructions refer to procedures included in other Boeing documents. When the words "refer to" are used and the operator has an accepted alternative procedure, the accepted alternative procedure can be used. When the words "in accordance with" are included in the instruction, the procedure in the Boeing document must be used. 8. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed. 9. Where the work instructions include installation of a kept part, a new or serviceable part with the same part number can be installed as an alternative to the kept part. 10. Use of colors in Figures is based on guidance from the ATA e-Business Program (ATA) iSpec 2200. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 30 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 31 11. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS are in Paragraph 1.E., Compliance. 12. Some steps in the Work Instructions are labeled as Required for Compliance (RC). If this service bulletin is mandated by an Airworthiness Directive (AD), then the steps labeled as RC, including sub-steps under an RC step and any figures identified in an RC step, must be done to comply with the AD. If a step or sub-step is labeled "RC Exempt," then the RC requirement is removed from that step or sub-step. An Alternative Method of Compliance (AMOC) is required for any deviations to RC steps, including sub-steps and identified figures. Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC. This is provided that the RC steps, including sub-steps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. B. WORK INSTRUCTIONS DO NOT TIGHTEN THE SHUTOFF VALVE ON EACH OXYGEN CYLINDER MORE THAN 25 IN-LB. TOO MUCH TORQUE CAN CAUSE DAMAGE TO THE SHUTOFF VALVE. CAUTION 1. Prepare the passenger gaseous oxygen system to do maintenance. Refer to 747-100/200/300 AMM 35-00-00 or 747-400 AMM 35-00-00, 'Safety Precautions', as an accepted procedure. 2. Remove and keep the main deck passenger compartment ceiling panels. Refer to 747-100/200/300 AMM 25-22-01 or 747-400 AMM 25-22-01 as an accepted procedure. 3. Remove and keep the upper deck passenger compartment ceiling panels. Refer to 747-100/200/300 AMM 25-22-03 or 747-400 AMM 25-22-03 as an accepted procedure. 4. Remove and keep the lowered ceiling panels main deck passenger compartment. Refer to 747-100/200/300 AMM 25-22-04 or 747-400 AMM 25-22-04 as an accepted procedure. 5. Group 15: Remove and keep the overhead stowage bins in the main deck and upper deck passenger compartments. Refer to 747-100/200/300 AMM 25-28-01 as an accepted procedure. 6. Group 1-14: Remove and keep the outboard and center overhead stowage bins in the main deck passenger compartment. Refer to 747-400 AMM 25-28-01 and 747-400 AMM 25-28-02 as accepted procedures. 7. Group 1-14: Remove and keep the outboard overhead stowage bins in the upper deck passenger compartment. Refer to 747-400 AMM 25-28-23 as an accepted procedure. 8. Open or remove and keep the main deck Passenger Service Units (PSU) and Attendant's Service Units (ASU) or overdoor service panels, to get access to the low pressure oxygen hose assemblies. Refer to 747-100/200/300 AMM 25-23-01 and 747-100/200/300 AMM 25-23-04, or 747-400 AMM 25-23-01 and 747-400 AMM 25-23-04, as accepted procedures. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 31 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 32 MAKE SURE THAT THE AREA IN AND AROUND THE OXYGEN SYSTEM ARE CLEAN. CAUTION 9. Group 1-13, 15: RC - Do PART 1: LOW PRESSURE OXYGEN HOSE ASSEMBLY - REPLACEMENT 10. RC - Do PART 2: LOW PRESSURE OXYGEN SYSTEM HOSE ASSEMBLY - GENERAL VISUAL INSPECTION. a. CONDITION 1: ALL HOSES HAVE MORE THAN OR EQUAL TO THE MINIMUM CLEARANCE (1) No further action required b. CONDITION 2: ONE OR MORE HOSE ASSEMBLIES HAVE LESS THAN THE MINIMUM CLEARANCE (1) Adjust to make the minimum clearance agree with the dimension(s) specified in APPENDIX C. Refer to 747-100/200/300 AMM 35-00-00 or 747-400 AMM 35-00-00 as an accepted procedure. 11. Open oxygen system shutoff valve. Refer to 747-100/200/300 AMM 35-00-00 or 747-400 AMM 35-00-00, 'Safety Precautions', as an accepted procedure. 12. RC - If one or more hose assemblies were replaced or disconnected, do an Oxygen System Low Pressure Leak Test of the passenger oxygen system. If the oxygen system fails the test, do corrective actions, repeat the test, and do applicable corrective actions until the test is passed. Refer to 747-100/200/300 AMM 35-21-00 or 747-400 AMM 35-21-00 as an accepted procedure. 13. Close or install the main deck Passenger Service Units (PSU) and Attendant's Service Units (ASU) or overdoor service panels, to close access to the low pressure oxygen hose assemblies. Refer to 747-100/200/300 AMM 25-23-01 and 747-100/200/300 AMM 25-23-04, or 747-400 AMM 25-23-01 and 747-400 AMM 25-23-04, as accepted procedures. 14. Group 1-14: Install the outboard overhead stowage bins in the upper deck passenger compartment. Refer to 747-400 AMM 25-28-23 as an accepted procedure. 15. Group 1-14: Install the outboard and center overhead stowage bins in the main deck passenger compartment. Refer to 747-400 AMM 25-28-01 and 747-400 AMM 25-28-02 as accepted procedures. 16. Group 15: Install the overhead stowage bins in the main deck and upper deck passenger compartments. Refer to 747-100/200/300 AMM 25-28-01 as an accepted procedure. 17. Install the lowered ceiling panels main deck passenger compartment. Refer to 747-100/200/300 AMM 25-22-04 or 747-400 AMM 25-22-04 as an accepted procedure. 18. Install the upper deck passenger compartment ceiling panels. Refer to 747-100/200/300 AMM 25-22-03 or 747-400 AMM 25-22-03 as an accepted procedure. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 32 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 33 19. Install main deck passenger compartment ceiling panels. Refer to 747-100/200/300 AMM 25-22-01 or 747-400 AMM 25-22-01 as an accepted procedure. 20. Put the airplane back to a serviceable condition. Group 1-13, 15: PART 1: LOW PRESSURE OXYGEN HOSE - REPLACEMENT 1. Replace each conductive low pressure oxygen system flexible hose assembly with a non-conductive one in accordance with Table 3 and: Group 1: FIGURE 1 Group 2: FIGURE 2 Group 3: FIGURE 3 Group 4: FIGURE 4 Group 5: FIGURE 5 Group 6: FIGURE 6 Group 7: FIGURE 7 Group 8: FIGURE 8 Group 9: FIGURE 9 Group 10: FIGURE 10 Group 11: FIGURE 11 Group 12: FIGURE 12 Group 13: FIGURE 13 Group 15: FIGURE 14 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 33 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 34 Table 3: HOSE ASSEMBLY REPLACEMENT More DataNew O-Ring To InstallNew Hose Assembly Part Number To Install Removed Hose Assem- bly Part Number (Suppli- er Part Number) (a)-38001-66760B50059-103 (38001- 103) (a)-38001-66860B50059-104 (38001- 104) (a)-57034-16N12009060B50059-115 (38001- 115) (a)-57034-24N12019560B50059-116 (38001- 116) (a)-57034-16N12018860B50059-118 (38001- 118) (a)-38001-65860B50059-119 (38001- 119) (a)-57034-24N12041060B50059-126 (38001- 126) (a)-57034-16N12035060B50059-127 (38001- 127) (a)-38001-65960B50059-58 (38001-58) (a)-38001-66060B50059-61 (38001-61) (a)-38001-66660B50059-65 (38001-65) (a)-38001-65760B50059-98 (38001-98) (a)417U4205-257034N13240S417U406-13240 (57034- 13240) (a)417U4205-157034N25107S417U406-25107 (57034- 25107) (a)417U4205-157034N25200S417U406-25200 (57034- 25200) (a)417U4205-157034N25240S417U406-25240 (57034- 25240) (a)417U4205-157034N35280S417U406-35280 (57034- 35280) (a)417U4205-257034N53120S417U406-53120 (57034- 53120) (a)417U4205-157034N55159S417U406-55159 (57034- 55159) (a)417U4205-157034N65147S417U406-65147 (57034- 65147) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 34 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 35 Table 3: HOSE ASSEMBLY REPLACEMENT More DataNew O-Ring To InstallNew Hose Assembly Part Number To Install Removed Hose Assem- bly Part Number (Suppli- er Part Number) (a)417U4205-257034N73200S417U406-73200 (57034- 73200) (a) If the part number of the removed hose assembly is not known, contact The Boeing Company for instructions and do the instructions. PART 2: LOW PRESSURE OXYGEN SYSTEM HOSE ASSEMBLY - GENERAL VISUAL INSPECTION 1. Do a General Visual Inspection of the low pressure oxygen system in the main deck and upper deck passenger compartments to make sure there is minimum clearance of the oxygen system hose assemblies from adjacent structure and systems, in accordance with FIGURE 15. NOTE: This work does not include the flexible oxygen hose assemblies replaced in accordance with PART 1. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 35 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 36 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 1. STA 2360 STA 1480 STA STA 1000 520 MAIN STA DISTRIBUTION 1085 LOOP STA STA STA 605 861 420 _ RBL 100 - 0.0 BL - LBL 100 STA STA STA 534 797 842 14 11) 12 STA 861 A-A 2574547 FIGURE 1: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 3) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 36 of 90 ### Page 37 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center bin. (a) 2S417U406-( )RETAINERRemove / Keep1 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to center bin. (a) 2417U4205-( )O-RINGInstall (New)2 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep3 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)4 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove5 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)6 Upper deck hose assembly hook up to main distribution loop. (a) 160B50059-( )HOSE ASSYRemove7 Upper deck hose assembly hook up to main distribution loop. (a)(b) 157034-( )HOSE ASSYInstall (New)8 FIGURE 1: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 37 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 38 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)10 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Upper deck hose assembly hook up to main distribution loop. (a) 160B50059-( )HOSE ASSYRemove11 Upper deck hose assembly hook up to main distribution loop. (a)(b) 157034-( )HOSE ASSYInstall (New)12 Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove13 Hose assembly con- nection to stowage bin end cap. (a)(b) 157034-( )HOSE ASSYInstall (New)14 Hose assembly con- nection to center bin. (a) 1S417U406-( )RETAINERRemove / Keep15 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to center bin. (a) 1417U4205-( )O-RINGInstall (New)16 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 1: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 38 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 39 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 2. STA 2360 STA 1480 STA \ STA 1000 520 STA 1085 STA STA STA 861 1100 420 _ RBL 100 + - LBL 100 STA MAIN STA 534 DISTRIBUTION 797 LOOP STA 861 A-A FIGURE 2: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 3) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 39 of 90 ### Page 40 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center bin. (a) 2S417U406-( )RETAINERRemove / Keep1 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to center bin. (a) 2417U4205-( )O-RINGInstall (New)2 (a)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep3 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)4 (a)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove5 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)6 Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove7 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)8 FIGURE 2: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 40 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 41 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)10 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Upper deck hose assembly hook up to main distribution loop. (a) 160B50059-( )HOSE ASSYRemove11 Upper deck hose assembly hook up to main distribution loop. (a)(b) 157034-( )HOSE ASSYInstall (New)12 Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove13 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)14 Hose assembly con- nection to center stowage bin. (a) 1S417U406-( )RETAINERRemove / Keep15 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 1417U4205-( )O-RINGInstall (New)16 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 2: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 41 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 42 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 3. STA 2360 STA 1480 STA STA 1000 520 STA STA 725 1085 STA STA STA 797 861 1100 420 - RBL 100 - 480 534 STA MAIN DISTRIBUTION SIA 797 STA 842 13 14 (15) 16 LOOP STA 861 A-A 2574826 FIGURE 3: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 3) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 42 of 90 ### Page 43 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 2S417U406-( )RETAINERRemove / Keep1 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 2417U4205-( )O-RINGInstall (New)2 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep3 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)4 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove5 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)6 Main distribution loop connection to upper deck.(a) 160B50059-( )HOSE ASSYRemove7 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)8 FIGURE 3: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 43 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 44 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)10 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Upper deck hose assembly hook up to main distribution loop. (a) 160B50059-( )HOSE ASSYRemove11 Upper deck hose assembly hook up to main distribution loop. (a)(b) 157034-( )HOSE ASSYInstall (New)12 Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove13 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)14 Hose assembly con- nection to center stowage bin. (a) 1S417U406-( )RETAINERRemove / Keep15 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 1417U4205-( )O-RINGInstall (New)16 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 3: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 44 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 45 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 4. STA 2360 STA 1480 STA \ STA 1000 520 STA STA 725 1085 STA STA STA STA 740 861 1100 420 _ RBL 100 - B0 1 - 100 ALBL MAIN STA DISTRIBUTION STA STA 534 LOOP 797 842 | STA 861 A-A 2575019 FIGURE 4: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 3) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 45 of 90 ### Page 46 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 2S417U406-( )RETAINERRemove / Keep1 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 2417U4205-( )O-RINGInstall (New)2 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep3 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)4 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove5 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)6 Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove7 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)8 FIGURE 4: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 46 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 47 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to stowage bin endcap.(a) 1S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)10 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Upper deck hose assembly hook up to main distribution loop. (a) 160B50059-( )HOSE ASSYRemove11 Upper deck hose assembly hook up to main distribution loop. (a)(b) 157034-( )HOSE ASSYInstall (New)12 Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove13 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)14 Hose assembly con- nection to center stowage bin. (a) 1S417U406-( )RETAINERRemove / Keep15 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 1417U4205-( )O-RINGInstall (New)16 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 4: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 47 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 48 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 5. STA 2360 STA 1480 STA STA 1000 520 00000000 MAIN DISTRIBUTION STA LOOP 1341 STA STA 208 1360 STA 200 _ RBL 100 BL 0.0 LBL 100 STA STA STA 534 842 1320 A-A 2575022 FIGURE 5: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 3) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 48 of 90 ### Page 49 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 160B50059-( )HOSE ASSYRemove1 Hose assembly con- nection to center stowage bin. (a)(b) 138001-( )HOSE ASSYInstall (New)2 Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove3 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)4 Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove5 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)6 Hose assembly con- nection to stowage bin endcap. (a) 2S417U406-( )RETAINERRemove / Keep7 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 2417U4205-( )O-RINGInstall (New)8 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to center stowage bin. (a) 2S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove FIGURE 5: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 49 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 50 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 2417U4205-( )O-RINGInstall (New)10 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 2S417U406-( )RETAINERRemove / Keep11 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 2417U4205-( )O-RINGInstall (New)12 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 5: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 50 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 51 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 6. STA 2360 STA 1480 STA 1000 A STA 520 STA STA 725 1085 STA 180 STA STA 861 1100 ISTA 200 RBL 100 _ LBL 100 STA 208 STA STA STA 534 797 842 У16) MAIN DISTRIBUTION LOOP А-A 2575035 FIGURE 6: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 4) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 Copyright © Unpublished 747-35-2134 Work - See page 1 for details. 51 of 90 ### Page 52 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to outboard stowage bin. (a) 1S417U406-( )RETAINERRemove / Keep1 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to outboard stowage bin. (a) 1417U4205-( )O-RINGInstall (New)2 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to center stowage bin. (a) 160B50059-( )HOSE ASSYRemove3 Hose assembly con- nection to center stowage bin. (a)(b) 138001-( )HOSE ASSYInstall (New)4 Hose assembly con- nection to center stowage bin. (a) 2S417U406-( )RETAINERRemove / Keep5 (a)1S417U406-( )HOSE ASSYRemove (a)2417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 2417U4205-( )O-RINGInstall (New)6 (a)157034N( )HOSE ASSYInstall (New) (a)2S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove7 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)8 Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove9 FIGURE 6: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 4) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 52 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 53 More DataQtyIdentificationNameTaskStep Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)10 Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep11 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)12 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Upper deck hose assembly hook up to main distribution loop. (a) 160B50059-( )HOSE ASSYRemove13 Upper deck hose assembly hook up to main distribution loop. (a)(b) 157034-( )HOSE ASSYInstall (New)14 Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep15 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)16 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to center stowage bin. (a) 1S417U406-( )RETAINERRemove / Keep17 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove FIGURE 6: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 4) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 53 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 54 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 1417U4205-( )O-RINGInstall (New)18 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 6: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 4 OF 4) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 54 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 55 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 7. STA 2360 STA 1480 STA STA 1000 A 520 STA 1085 STA 208 MAIN STA DISTRIBUTION 1100 STA LOOP 200 ‚RBL 100 ~ BL 0.0 100 STA STA STA 534 797 861 A-A 2575194 FIGURE 7: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 4) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 55 of 90 ### Page 56 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 160B50059-( )HOSE ASSYRemove1 Hose assembly con- nection to center stowage bin. (a)(b) 138001-( )HOSE ASSYInstall (New)2 Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep3 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)4 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep5 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)6 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove7 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)8 FIGURE 7: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 4) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 56 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 57 More DataQtyIdentificationNameTaskStep Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)10 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove11 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)12 Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep13 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)14 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to center stowage bin. (a) 1S417U406-( )RETAINERRemove / Keep15 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to center stowage bin. (a) 1417U4205-( )O-RINGInstall (New)16 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) (a) Refer to 747-400 AMM 35-00-00 as an accepted procedure. FIGURE 7: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 3 OF 4) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 57 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 58 More DataQtyIdentificationNameTaskStep (b) Refer to 747-400 AMM 20-51-01 as an accepted procedure. FIGURE 7: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 4 OF 4) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 58 of 90 BOEING SERVICE BULLETIN 747-35-2134 ### Page 59 (OCR) BOEING SERVICE BULLETIN 747-35-2134 This Figure applies only to: Group 8. STA 2360 STA 1480 STA STA 1000 A 520 STA 1085 STA 208 MAIN SIA 861 STA DISTRIBUTION 1100 STA LOOP 200 RBL 100 BL O.0 LBL 100 STA STA STA 534 797 842 A-A 2577299 FIGURE 8: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 1 OF 3) Original Issue: November 22, 2017 Export Controlled ECCN: 9E991 747-35-2134 Copyright © Unpublished Work - See page 1 for details. 59 of 90 ### Page 60 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. More DataQtyIdentificationNameTaskStep Hose assembly con- nection to center stowage bin. (a) 160B50059-( )HOSE ASSYRemove1 Hose assembly con- nection to center stowage bin. (a)(b) 138001-( )HOSE ASSYInstall (New)2 Hose assembly con- nection to stowage bin endcap .(a) 1S417U406-( )RETAINERRemove / Keep3 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove Hose assembly con- nection to stowage bin endcap. (a) 1417U4205-( )O-RINGInstall (New)4 (a)(b)157034N( )HOSE ASSYInstall (New) (a)1S417U406-( )RETAINERInstall (Kept) Hose assembly con- nection to stowage bin endcap. (a) 160B50059-( )HOSE ASSYRemove5 Hose assembly con- nection to stowage bin endcap. (a)(b) 157034-( )HOSE ASSYInstall (New)6 Main distribution loop connection to upper deck. (a) 160B50059-( )HOSE ASSYRemove7 Main distribution loop connection to upper deck. (a)(b) 157034-( )HOSE ASSYInstall (New)8 Hose assembly con- nection to stowage bin endcap. (a) 1S417U406-( )RETAINERRemove / Keep9 (a)1S417U406-( )HOSE ASSYRemove (a)1417U4205-( )O-RINGRemove FIGURE 8: MAIN DECK PASSENGER COMPARTMENT, ABOVE CEILING - LOW PRESSURE OXYGEN SYSTEM FLEXIBLE HOSE ASSEMBLIES - REPLACEMENT (SHEET 2 OF 3) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2017 747-35-2134 60 of 90 BOEING SERVICE BULLETIN 747-35-2134 The text continues at https://openairdocs.org/service-documents/boeing/sb-747-35-2134/file/bec0b4eb279a.md?from=61 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.