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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-29A1119 Original Issue: August 04, 2015 ATA System: 2911 SUBJECT: HYDRAULIC POWER - Hydraulic Systems A and B - Wire Bundles and Hydraulic Tube Clamp 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 © 2015 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Unpublished Work.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: August 04, 2015 737-29A1119 1 of 53
2.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 2 of 53 BOEING SERVICE BULLETIN 737-29A1119
ALERTALERT
BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected26
B. Concurrent Requirements26
C. Reason26
D. Description26
E. Compliance27
F. Approval28
G. Manpower28
H. Weight and Balance Changes29
I. Electrical Load Data29
J. References29
1. Existing Data:29
2. Data Supplied with this Service Bulletin:30
3. Installation Drawings Used in the Preparation of this Service Bulletin:30
K. Publications Affected30
L. Interchangeability and Intermixability of Parts30
M. Software Accomplishment Summary30
2. MATERIAL INFORMATION31
A. Material - Price and Availability31
B. Industry Support Information32
C. Parts Necessary for Each Airplane32
1. Kits/Parts32
2. Parts and Materials Supplied by the Operator33
3. Parts Modified and Reidentified34
4. Parts Removed and Not Replaced34
D. Parts Necessary to Change Spares34
E. Special Tooling - Price and Availability34
F. Special Tooling Necessary to do this Service Bulletin34
3. ACCOMPLISHMENT INSTRUCTIONS35
A. GENERAL INFORMATION35
B. WORK INSTRUCTIONS36
FIGURE 1: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC
TUBE AND WIRE BUNDLES - INSPECTION [Group 1]41
FIGURE 2: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC
TUBE AND WIRE BUNDLES - INSPECTION [Group 2]43
FIGURE 3: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -
INSTALLATION [Group 1]45
FIGURE 4: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -
INSTALLATION [Group 2]48
APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 1: RIGHT MAIN WHEEL
WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC TUBE AND WIRE
BUNDLES - INSPECTION AND CLAMPS INSTALLATION51
APPENDIX B: PART DEMAND INTENT53
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 3 of 53 BOEING SERVICE BULLETIN 737-29A1119
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Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 4 of 53 BOEING SERVICE BULLETIN 737-29A1119
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Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-29A1119Original Issue: August 04, 2015 ATA System: 2911 SUBJECT: HYDRAULIC POWER - Hydraulic Systems A and B - Wire Bundles and Hydraulic Tube Clamp 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 This service bulletin is sent to prevent possible wire chafing damage to wire bundles W6128 and W8122 caused by insufficient separation from a hydraulic tube in the Main Landing Gear (MLG) wheel well. If this service bulletin is not done, wire chafing between the wire bundle and hydraulic tube could cause arcing and a loss of hydraulic fluid, which may result in a wheel well fire.
Boeing has received a report of damage to wire W6128-0506-10. The wire had chafed and arced to an adjacent hydraulic tube located in the forward bulkhead of the MLG wheel well. The chafing and electrical arc created a small hole in the System B hydraulic tube and also caused damage to the wire bundle, which resulted in a ground fault detection on the System A Electrical Motor-Driven Pump (EMDP). The small hole led to a total loss of System B hydraulic fluid and the ground fault resulted in removal of power from the System A EMDP and illumination of the System A EMDP low power light. Boeing investigated this problem and found that there was not sufficient separation between the wire bundles W6128 and W8122 and the adjacent hydraulic tube at that location. As a result, Boeing is issuing this service bulletin to add clamps to separate the wire bundles from the hydraulic tube on airplanes from line number 1060 and on. Airplanes before line number 1060 do not need this change because of a configuration difference in the applicable area. This change will be incorporated on in-production airplanes starting at line number 5432.
Boeing Service Related Problem (SRP) 737NG-SRP-29-0112 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 737NG FTD 29-15001 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 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 5 of 53
ReferenceAffectedPlanning Data Paragraph 1.E., Compliance and Paragraph
1.F., Approval NoAD 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 Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator YesOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION In the right side of the Main Landing Gear wheel well, do a Detailed Inspection for chafing damage of wire bundles and a hydraulic tube. If the wire bundles are found to be damaged, repair as necessary. If the hydraulic tube is found to be damaged, replace or repair as necessary. Install clamps and an optional spacer between the wire bundle and hydraulic tube. Do a test of applicable electrical systems if the wire bundle was repaired.
Service the hydraulic system if the hydraulic tube was replaced or repaired.
EFFECTIVITY 737-600, -700, -700C, -800, -900 and -900ER Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s).
COMPLIANCE Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes, inspection, and repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 6 of 53 BOEING SERVICE BULLETIN 737-29A1119
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BOEING SERVICE BULLETIN 737-29A1119
ALERT ALERT Operators are encouraged to complete the survey provided in APPENDIX B of this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts.
DO A DETAILED INSPECTION FOR CHAFING
DAMAGE OF WIRE BUNDLES AND A HYDRAULIC TUBE. IF THE WIRE BUNDLES ARE FOUND TO BE MAIN LANDING GEAR WHEEL WELL DAMAGED, REPAIR AS NECESSARY. IF THE HYDRAULIC TUBE IS FOUND TO BE DAMAGED, (FORWARD BULKHEAD, RIGHT SIDE) REPLACE OR REPAIR AS NECESSARY. INSTALL
CLAMPS AND AN OPTIONAL SPACER BETWEEN THE WIRE BUNDLES AND HYDRAULIC TUBE. DO A
TEST OF APPLICABLE ELECTRICAL SYSTEMS IF THE WIRE BUNDLES WERE REPAIRED. SERVICE 2432609
THE HYDRAULIC SYSTEM IF THE HYDRAULIC TUBE WAS REPLACED OR REPAIRED.
Original Issue: August 04, 2015 Export Controlled ECCN: 9E991 - BOEING 737-29A1119 PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 53
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 8 of 53 BOEING SERVICE BULLETIN 737-29A1119
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BLANK PAGE
Commercial Airplanes 737 Service Bulletin ALERT Number: 737-29A1119 Original Issue: August 04, 2015 ATA System: 2911 SUBJECT: HYDRAULIC POWER - Hydraulic Systems A and B - Wire Bundles and Hydraulic Tube Clamp 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.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is applicable to 737-600, -700, -700C, -800, -900 and -900ER Airplanes, line numbers 1060 to 5431 in 2 Groups. The Variable Numbers and Group Information for the applicable airplanes is given below.
DESCRIPTIONCONFIGURATIONGROUP 737-600/700/800/900 with Hydraulic Tube P/N 272A4451-56 adjacent to W6128 and W8122.
-1 737-600/700/800/900 with Hydraulic Tube P/N 272A4451-1044 adjacent to W6128 and W8122.
-2 Airplane Models:
737-600, 737-700, 737-700C, 737-800, 737-900, 737-900ER GroupVariable Number 1YA119 - YA199 1YA211 1YA221 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 9 of 53
GroupVariable Number 1YA341 - YA345 1YA357 1YA367 1YA371 - YA377 1YA551 - YA552 1YA630 - YA631 1YA636 1YA641 - YA642 1YA648 - YA650 1YA657 - YA659 1YA666 - YA667 1YA671 - YA672 1YA691 1YA707 - YA710 1YA835 1YA857 - YA862 1YA967 - YA978 1YB111 - YB132 1YB156 - YB158 1YB163 - YB164 1YB184 1YB206 - YB208 1YB306 - YB310 1YB371 - YB392 1YB522 - YB526 1YB541 - YB544 1YB551 1YB561 - YB598 1YB601 - YB635 2YB636 1YB651 1YB656 1YB671 - YB672 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 10 of 53 BOEING SERVICE BULLETIN 737-29A1119
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GroupVariable Number 1YB851 - YB863 1YB871 - YB874 1YB881 - YB893 1YB901 - YB903 1YB911 1YB961 - YB974 2YB975 2YB981 1YB986 - YB995 2YB996 - YB998 1YC029 - YC030 1YC083 - YC084 1YC091 - YC095 1YC168 - YC170 1YC176 - YC179 1YC186 - YC190 1YC201 - YC203 1YC206 - YC207 1YC304 - YC305 1YC383 - YC387 1YC393 - YC394 1YC415 1YC422 1YC427 - YC428 1YC436 - YC439 1YC490 - YC499 1YC525 - YC526 1YC582 - YC583 1YC654 - YC655 1YC738 - YC750 1YC881 - YC892 1YC921 - YC922 1YC949 - YC951 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 11 of 53 BOEING SERVICE BULLETIN 737-29A1119
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GroupVariable Number 1YC977 - YC978 1YD006 - YD007 1YD054 - YD057 1YD108 - YD110 2YD111 - YD117 1YD153 - YD159 1YD208 - YD209 1YD216 - YD219 1YD252 - YD254 1YD256 - YD257 1YD261 1YD317 - YD334 1YD391 1YD408 - YD410 1YD412 - YD416 2YD417 - YD422 1YD481 - YD485 1YD491 - YD499 1YD507 - YD512 1YD535 1YD543 - YD547 1YD561 - YD564 1YD571 - YD572 1YD591 - YD595 1YD612 1YD651 - YD655 1YE204 - YE206 1YE301 - YE305 1YE321 - YE326 1YE371 - YE383 1YF001 - YF007 2YF008 - YF011 1YF021 - YF040 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 04, 2015 737-29A1119 12 of 53 BOEING SERVICE BULLETIN 737-29A1119