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Commercial Airplanes 767 Service Bulletin ALERT Number: 767-38A0073 Original Issue: November 12, 2013 ATA System: 3810 3071 SUBJECT: WATER/WASTE - Potable - Section 41 Potable Water Couplings Inspection and Replacement and Spray Shroud Installation 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:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2013 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Unpublished Work.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.
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Table of Contents
S u m m a r y7
1. PLANNING INFORMATION ........................................ 1 3 A . E f f e c t i v i t y ............................................... 1 3
1. Airplanes ............................................ 1 3 2 . S p a r e s A f f e c t e d ........................................ 1 8 B. Concurrent Requirements ...................................... 1 8 C. Reason ................................................ 1 8 D. Description .............................................. 1 9 E. Compliance .............................................. 2 0 F . A p p r o v a l ............................................... 2 2 G. Manpower .............................................. 2 2 H. Weight and Balance Changes .................................... 3 7 I. Electrical Load Data ......................................... 3 7 J . R e f e r e n c e s .............................................. 3 7
1. Existing Data: ......................................... 3 7
2. Data Supplied with this Service Bulletin: ........................... 3 7
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 3 7 K. Publications Affected ........................................ 3 8 L. Interchangeability and Intermixability of Parts ........................... 3 8 M. Software Accomplishment Summary ................................ 3 8
2. MATERIAL INFORMATION ........................................ 3 9 A. Material - Price and Availability ................................... 3 9 B. Industry Support Information .................................... 4 1 C. Parts Necessary for Each Airplane ................................. 4 1 1 . K i t s / P a r t s : ........................................... 4 1
2. Parts and Materials Supplied by the Operator: ........................ 4 7
3. Parts Modified and Reidentified: ............................... 4 8
4. Parts Removed and Not Replaced: .............................. 4 8 D. Parts Necessary to Change Spares ................................. 4 9 E. Special Tooling - Price and Availability ............................... 4 9 F. Special Tooling Necessary to do this Service Bulletin ....................... 4 9
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 5 1 A. GENERAL INFORMATION ..................................... 5 1 B. WORK INSTRUCTIONS ....................................... 5 3 FIGURE 1: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 1 AND 3 INSPECTION [Group 1, 3-4, 6-7, 10-13] ................ 5 9 FIGURE 2: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 INSPECTION [Group 1-2, 9, 11] ........................ 6 2 FIGURE 3: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 INSPECTION [Group 4-6, 10, 12-13] ..................... 6 4 FIGURE 4: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 INSPECTION [Group 7-8] ........................... 6 6 FIGURE 5: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 INSPECTION [Group 3] ............................ 6 8 FIGURE 6: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 INSPECTION [Group 1-2, 7-8, 11] ....................... 7 1 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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FIGURE 7: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 INSPECTION [Group 4-5, 12] ......................... 7 3 FIGURE 8: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 INSPECTION [Group 9] ............................ 7 5 FIGURE 9: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 INSPECTION [Group 6, 10, 13] ........................ 7 7 FIGURE 10: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 INSPECTION [Group 3] ............................ 8 2 FIGURE 11: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 2 INSPECTION [Group 5, 10, 12] ........................ 8 5 FIGURE 12: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 6 AND 9 INSPECTION [Group 11] ........................ 8 7 FIGURE 13: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 7 INSPECTION [Group 9] ............................ 9 0 FIGURE 14: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 8 INSPECTION [Group 10] ............................ 9 2 FIGURE 15: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 1 AND 3 SPRAY SHROUD INSTALLATION [Group 1, 3-4, 6-7, 10-13] .... 9 4 FIGURE 16: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 SPRAY SHIELD INSTALLATION [Group 1-2, 9, 11] ............ 1 0 0 FIGURE 17: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 SPRAY SHIELD INSTALLATION [Group 4-6, 10, 12-13] .......... 1 0 3 FIGURE 18: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 SPRAY SHIELD INSTALLATION [Group 7-8] ................ 1 0 6 FIGURE 19: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 SPRAY SHIELD INSTALLATION [Group 3] ................. 1 0 9 FIGURE 20: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHIELD INSTALLATION [Group 1-2, 7-8, 11-12] .......... 1 1 2 FIGURE 21: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHIELD INSTALLATION [Group 4-5, 12] .............. 1 1 6 FIGURE 22: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHIELD INSTALLATION [Group 9] ................. 1 1 9 FIGURE 23: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHIELD INSTALLATION [Group 10] ................ 1 2 3 FIGURE 24: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHROUD INSTALLATION [Group 13] ............... 1 2 7 FIGURE 25: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHROUD INSTALLATION [Group 6] ................ 1 3 1 FIGURE 26: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 SPRAY SHROUD INSTALLATION [Group 3] ................ 1 3 5 FIGURE 27: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 2 SPRAY SHROUD INSTALLATION [Group 5, 10, 12] ............ 1 3 9 FIGURE 28: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 6 SPRAY SHROUD INSTALLATION AND LOCATION 9 ISOLATION [Group 11] ................................................. 1 4 2 FIGURE 29: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 7 SPRAY SHROUD INSTALLATION [Group 9] ................ 1 5 1 FIGURE 30: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 8 SPRAY SHROUD INSTALLATION [Group 10] ............... 1 5 7 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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FIGURE 31: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 1 AND 3 REPLACEMENT [Group 1, 3-4, 6-7, 10-13] ............. 1 6 3 FIGURE 32: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 REPLACEMENT [Group 1-2, 9, 11] ..................... 1 6 6 FIGURE 33: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 REPLACEMENT [Group 4-6, 10, 12-13] ................... 1 6 9 FIGURE 34: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 REPLACEMENT [Group 7-8] ......................... 1 7 2 FIGURE 35: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 4 REPLACEMENT [Group 3] .......................... 1 7 5 FIGURE 36: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 REPLACEMENT [Group 1-2, 7-8, 11] .................... 1 7 8 FIGURE 37: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 REPLACEMENT [Group 4-5, 12] ....................... 1 8 1 FIGURE 38: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 REPLACEMENT [Group 9] .......................... 1 8 4 FIGURE 39: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 REPLACEMENT [Group 6, 10, 13] ...................... 1 8 7 FIGURE 40: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 5 REPLACEMENT [Group 3] .......................... 1 9 2 FIGURE 41: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 2 REPLACEMENT [Group 5, 10, 12] ...................... 1 9 5 FIGURE 42: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 6 AND 9 REPLACEMENT [Group 11] ..................... 1 9 7 FIGURE 43: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 7 REPLACEMENT [Group 9] .......................... 2 0 0 FIGURE 44: FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - LOCATION 8 REPLACEMENT [Group 10] ......................... 2 0 2 APPENDIX A: GROUP APPLICABILITY OF COUPLING LOCATIONS AND RELATED FIGURES . . . 204 APPENDIX B: POTABLE WATER SYSTEM COUPLING - IDENTIFICATION ............... 2 0 5 APPENDIX C: POTABLE WATER SYSTEM COUPLING - INSTALLATION ................ 2 0 6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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Commercial Airplanes 767 Service Bulletin ALERT SummaryNumber: 767-38A0073Original Issue: November 12, 2013 ATA System: 3810 3071 SUBJECT: WATER/WASTE - Potable - Section 41 Potable Water Couplings Inspection and Replacement and Spray Shroud Installation
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of this service bulletin will make sure that the potable water system couplings in section 41 do not leak onto electrical equipment. If this service bulletin is not done, an uncontrolled water leak from a defective potable water system coupling could cause the Main Equipment Center (MEC) Line Replaceable Units (LRU's) to become wet. Wet Main Equipment Center (MEC) Line Replaceable Units (LRU's) could result in an electrical short and potential loss of several functions essential for safe flight.
An operator reported problems with the Engine Indication and Crew Alerting System (EICAS) display system during flight. An investigation of the event determined that it was caused by a water leak from a fractured plastic potable water coupling. Boeing analysis of all 767 models, based on delivered configurations, identified nine possible coupling locations as being near enough to electrical LRU's to cause a potential problem if water leaked from them. To reduce this risk, plastic couplings have now been made one way replaceable by metal couplings.
Plastic couplings were delivered on airplanes between line numbers 534 and 890. Plastic couplings have also been listed as two-way interchangeable with metal couplings applicable to 767 passenger airplanes up to line number 1062, thus, the changes in this service bulletin are applied to line numbers 534 thru 1062. Any plastic couplings found in the identified locations will be replaced with metal couplings. In addition, to further protect LRU's, spray shrouds, used on all new production airplanes, will be installed on operational airplanes to cover the identified couplings, to direct any leakage away from electrical equipment.
This service bulletin gives instructions to inspect and replace plastic potable water couplings with metal couplings in the identified locations in Section 41. In addition, spray shrouds and shields are installed to cover the identified couplings. Installation of new metal couplings will reduce the chance of uncontrolled water leakage and the spray shrouds will protect essential electrical systems should a leak occur.
Boeing Service Related Problem (SRP) 767-SRP-38-0063 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 767 FTD 38-12001 is related to this service bulletin.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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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 Paragraph 1.E., Compliance and Paragraph
1.F., Approval. Refer to AD worksheet 13-AD-
25.
YesAD Related Paragraph 1.H., Weight and Balance Changes.
Group 11 only.
YesWeight 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 Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator. Group 9 thru 11 only.
YesOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION (PRR B12901-113S) PART 1 - FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING -
INSPECTION AND REPLACEMENT
1. Get Access to the portable water system tubing in Section 41.
2. Do a general visual inspection in coupling locations 1 thru 6 and 9 for any plastic coupling in the potable water system.
a. If no plastic coupling is found no more work is necessary for those locations.
b. If any plastic coupling is found replace the coupling with an equivalent metal coupling.
3. Close access.
Group 9-10:
PART 2 - FORWARD GALLEY - POTABLE WATER SYSTEM COUPLING - INSPECTION AND
REPLACEMENT
1. Get Access to the portable water system tubing in Section 41.
2. Do a general visual inspection in coupling locations 7 or 8, for any plastic coupling, in the potable water system.
a. If no plastic coupling is found no more work is necessary for those locations.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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b. If any plastic coupling is found, replace the coupling with an equivalent metal coupling.
3. Close access.
PART 3 - FORWARD PASSENGER COMPARTMENT - POTABLE WATER SYSTEM COUPLING - SPRAY
SHROUD INSTALLATION
1. Get Access to the portable water system tubing in Section 41.
2. Install spray shrouds around metal couplings in coupling locations 1 thru 6.
3. Group 9-10:
Install spray shrouds around metal couplings at coupling locations 7 or 8.
4. Group 11:
Remove two hose assemblies and related parts between location 9 and location 6. Install one new hose assembly at location 6.
5. Close access.
EFFECTIVITY 767-200/300/400ER Airplane(s). 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 available for airplanes in warranty as of July 7, 2012. Please refer to Paragraph
2.B., Industry Support Information. The warranty remedies will expire eight years from the original issue date of this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Boeing Supplied Kits/Parts with Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
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BOEING SERVICE BULLETIN 767-38A0073
ALERT ALERT STA A PART 2 AND PART 3 WORK STA 240 PART 1 AND PART 3 WORK 000 REFER TO APPENDIX A FOR COUPLING LOCATION APPLICABILITY. PARTS 1 THRU 3 THAT FOLLOW GIVE THE RANGE OF POSSIBLE COUPLING LOCATIONS, REFERRED TO AS "LOCATIONS", FOR THE GIVEN GROUP APPLICABILITY.
PART 1 - FORWARD PASSENGER COMPARTMENT POTABLE WATER SYSTEM COUPLING - INSPECTION AND REPLACEMENT (GROUPS 1-13) -DO A GENERAL VISUAL INSPECTION AT LOCATIONS 1 THRU 6 AND 9 IDENTIFIED IN VIEW A-A TO SEE IF
PLASTIC COUPLINGS ARE INSTALLED -IF A PLASTIC COUPLING IS FOUND INSTALLED AT ANY OF THE LOCATIONS, REPLACE WITH EQUIVALENT METAL COUPLING AND DO A POTABLE WATER SYSTEN LEAKAGE TEST.
-IF A PLASTIC COUPLING IS NOT FOUND INSTALLED AT ANY OF THE LOCATIONS, NO MORE WORK IS NECESSARY FOR LOCATIONS 1 THRU 6 AND 9.
PART 2 - FORWARD GALLEY POTABLE WATER SYSTEM COUPLING - INSPECTION AND REPLACEMENT (GROUPS 9 AND 10) -DO A GENERAL VISUAL INSPECTION AT LOCATIONS 7 OR 8 IDENTIFIED IN VIEW A-A TO SEE IF PLASTIC
COUPLINGS ARE INSTALLED -IF A PLASTIC COUPLING IS FOUND INSTALLED AT EITHER OF THE LOCATIONS, REPLACE WITH EQUIVALENT METAL COUPLING AND DO A POTABLE WATER SYSTEN LEAKAGE TEST.
-IF A PLASTIC COUPLING IS NOT FOUND INSTALLED AT ANY OF THE LOCATIONS, NO MORE WORK IS NECESSARY FOR LOCATIONS 7 OR 8.
PART 3 - FORWARD PASSENGER COMPARTMENT POTABLE WATER SYSTEM COUPLING - SPRAY SHROUD INSTALLATION (GROUPS 1-13) -INSTALL SPRAY SHROUDS AROUND METAL COUPLINGS AT LOCATIONS 1 THRU 6.
(GROUPS 1-13) -INSTALL SPRAY SHROUDS AROUND METAL COUPLINGS AT LOCATIONS 7 OR 8 (GROUP 9 AND 10 ONLY) -REMOVE TWO HOSE ASSEMBLIES AND RELATED PARTS BETWEEN LOCATION 6 AND LOCATION 9.
INSTALL ONE NEW HOSE ASSEMBLY AT LOCATION 6.
(GROUP 11 ONLY). 2261580 -DO A POTABLE WATER SYSTEM LEAKAGE TEST.
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STA STA STA STA 303 325 347 PART 1 AND PART 3 WORK: STA 287 LOCATIONS 1 THRU 6 AND 9 STA 266 246 RBL 77 LOCATION 1 P37 P32 P101 LOCATION 8 P51 P50 LOCATION 7 P34 OCATION 9 PART 2 AND PART 3 WORK:
LOCATIONS 7 AND 8 P33 P140 E4 LOCATION 3 P65 E8 P36 P31 LBL 77 LOCATION 4 LOCATION 2 LOCATION 5 LOCATION 6
VIEW OF ALL APPLICABLE POTABLE WATER SYSTEM CONFIGURATIONS IN THE FORWARD PASSENGER COMPARTMENT AREA.
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Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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