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Commercial Airplanes MD90 Service Bulletin Number: MD90-28-013 Original Issue: September 27, 2013 ATA System: 2800 SUBJECT: FUEL - Fuel Systems - Install Ground Fault Interrupter Relays and Change Fuel Pump System Wiring 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Unpublished Work.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.
Original Issue: September 27, 2013 MD90-28-013 1 of 134
4.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 2 of 134 BOEING SERVICE BULLETIN MD90-28-013
BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected ........................................ 1 1 B. Concurrent Requirements ...................................... 1 2 C. Reason ................................................ 1 2 D. Description .............................................. 1 2 E. Compliance .............................................. 1 2 F. Approval ............................................... 1 2 G. Manpower .............................................. 1 3 H. Weight and Balance Changes .................................... 1 4 I. Electrical Load Data ......................................... 1 5 J. References .............................................. 2 0
1. Existing Data: ......................................... 2 0
2. Data Supplied with this Service Bulletin: ........................... 2 0
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 0
4. Process Data: ......................................... 2 1 K. Publications Affected ........................................ 2 1 L. Interchangeability and Intermixability of Parts ........................... 2 1 M. Software Accomplishment Summary ................................ 2 1
2. MATERIAL INFORMATION ........................................ 2 3 A. Material - Price and Availability ................................... 2 3 B. Industry Support Information .................................... 2 3 C. Parts Necessary for Each Airplane ................................. 2 3
1. Kits/Parts ............................................ 2 3
2. Parts and Materials Supplied by the Operator ........................ 2 8
3. Parts Modified and Reidentified ................................ 2 9
4. Parts Removed and Not Replaced .............................. 2 9 D. Parts Necessary to Change Spares ................................. 3 0 E. Special Tooling - Price and Availability ............................... 3 0 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 0
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 1 A. GENERAL INFORMATION ..................................... 3 1 B. WORK INSTRUCTIONS ....................................... 3 3 FIGURE 1: REMOVE RELAYS R2-218 AND R2-219 - FORWARD CARGO COMPARTMENT, LEFT SIDE [Group 3] ............................................ 3 8 FIGURE 2: INSTALL BRACKETS AND MOD BLOCK RAIL - E/E COMPARTMENT, AFT LEFT RADIO RACK [Group 1-2] ....................................... 4 0 FIGURE 3: INSTALL BRACKETS AND MOD BLOCK RAILS - E/E COMPARTMENT, AFT LEFT RADIO RACK [Group 3] ........................................ 4 4 FIGURE 4: REMOVE RELAYS R2-336, R2-337 AND RECEPTACLES R5-406, R5-407 - ELECTRICAL POWER CENTER [Group 2] .................................. 4 8 FIGURE 5: CENTER TANK FUEL BOOST WIRE CHANGES [Group 1] ................. 5 0 FIGURE 6: CENTER TANK FUEL BOOST WIRE CHANGES [Group 2] ................. 5 7 FIGURE 7: CENTER AND AUX FUEL BOOST AND TRANSFER WIRE CHANGES [Group 3] .... 6 3 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 3 of 134 BOEING SERVICE BULLETIN MD90-28-013
FIGURE 8: INSTALL GFI RELAYS AND RECEPTACLES - E/E COMPARTMENT, AFT LEFT RADIO RACK [Group 1] ............................................ 7 6 FIGURE 9: INSTALL GFI RELAYS AND RECEPTACLES - E/E COMPARTMENT, AFT LEFT RADIO RACK [Group 2] ............................................ 7 9 FIGURE 10: INSTALL GFI RELAYS AND RECEPTACLES - E/E COMPARTMENT, AFT LEFT RADIO RACK [Group 3] ............................................ 8 2 APPENDIX A: GFI CENTER FUEL TANK PUMPS CONTROL CIRCUIT, AND CENTER FUEL TANK PUMPS LOW PRESSURE INDICATION SYSTEM TEST PROCEDURES [Group 1] ........ 8 7 APPENDIX B: GFI CENTER FUEL TANK PUMPS CONTROL CIRCUIT, AND CENTER FUEL TANK PUMPS LOW PRESSURE INDICATION SYSTEM TEST PROCEDURES [Group 2] ....... 1 0 0 APPENDIX C: GFI CENTER/AUX FUEL TANK PUMPS CONTROL CIRCUIT, AND CENTER/AUX FUEL TANK PUMPS LOW PRESSURE INDICATION SYSTEM TEST PROCEDURES [Group 3] . . . 114 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 4 of 134 BOEING SERVICE BULLETIN MD90-28-013
Commercial Airplanes MD90 Service Bulletin SummaryNumber: MD90-28-013Original Issue: September 27, 2013 ATA System: 2800 SUBJECT: FUEL - Fuel Systems - Install Ground Fault Interrupter Relays and Change Fuel Pump System Wiring
CONCURRENT REQUIREMENTS None.
BACKGROUND Frictional heating or sparking may develop from fuel pump failure, wear of fuel pump rotating components, or ingestion of debris by the pump. Electrical faults in a fuel pump may result in electrical arc burn through of a fuel pump. Frictional heating or sparking and electrical arc burn through in fuel pump inlets or priming system outlets exposed (i.e. not covered by fuel) to the tank ullage in combination with the ullage being flammable, may result in a fuel tank ignition event. A fuel tank ignition event could develop with a pump running in an empty tank if the normal shutoff command is delayed or as a result of control system failures that keep the pump in a latent uncommanded running condition. Center wing fuel tanks and auxiliary fuel tank may be subject to this condition since they are normally pumped dry over the course of a flight. If not corrected frictional heating or sparking, electrical arc burn through, or a fuel tank pump running in an empty fuel tank may result in a fuel tank ignition event.
This service bulletin is the result of the safety assessments conducted by Boeing under a Special Federal Aviation Regulation (SFAR) 88, Fuel Tank System Fault Tolerance Evaluation Requirements.
Boeing Fleet Team Digest (FTD) MD-90 FTD 28-03001 is related to this service bulletin.
ACTION This service bulletin installs Ground Fault Interrupter (GFI) relays and cuts/coils/stows wires to center wing and auxiliary fuel tank pump motor neutral circuits.
EFFECTIVITY MD-90-30 Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2012-18-05 is related to this service bulletin.
Boeing recommends that the change given in this service bulletin be done within 60 months after the effective date of AD 2012-18-05.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 5 of 134
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin.
MANPOWER Elapsed HoursTotal Task HoursGroup
31.058.01
24.445.32
73.7142.73
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: September 27, 2013 MD90-28-013 6 of 134 BOEING SERVICE BULLETIN MD90-28-013
BOEING SERVICE BULLETIN MD90-28-013
INSTALL GROUND FAULT INTERRUPTER RELAYS
AND CHANGE FUEL PUMP SYSTEM WIRING 1885979 Original Issue: September 27, 2013 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished MD90-28-013 Work - See page 1 for details. 7 of 134
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 8 of 134 BOEING SERVICE BULLETIN MD90-28-013
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Commercial Airplanes MD90 Service Bulletin Number: MD90-28-013 Original Issue: September 27, 2013 ATA System: 2800 SUBJECT: FUEL - Fuel Systems - Install Ground Fault Interrupter Relays and Change Fuel Pump System Wiring
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is for the airplanes shown below.
DESCRIPTIONCONFIGURATIONGROUP Airplanes that install GFI relays for center fuel tank boost pumps which are affected by SR90280011-7001 drawing configuration.
-1 Airplanes that install GFI relays for center fuel tank boost pumps which are affected by SR90280011-7003 drawing configuration.
-2 Airplanes that install GFI relays for center fuel tank and forward auxiliary fuel tank boost pumps which are affected by SR90280011-7005 drawing configuration.
-3 Airplane Models:
MD-90-30 GroupFuselage Number 12094 - 2099 12100 12115 12117 12120 12122 - 2123 12125 - 2126 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 9 of 134
GroupFuselage Number 12129 12131 12133 12136 12138 12140 - 2144 12146 - 2147 12149 - 2150 12153 - 2154 12156 - 2159 12161 - 2166 12169 - 2171 12173 12175 12177 12179 12181 - 2182 12184 12186 12190 22191 12193 - 2195 12197 - 2198 12200 12202 - 2203 22205 12207 22209 12210 - 2212 22213 22215 - 2216 12217 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 10 of 134 BOEING SERVICE BULLETIN MD90-28-013
GroupFuselage Number 22219 12220 22221 12222 22223 12224 22225 - 2227 12228 22229 - 2232 12233 22235 12236 22237 12238 12240 12242 32243 12245 - 2246 12248 22250 - 2251 12253 22255 - 2257 12258 - 2259 22260 12261 22262 - 2263 22288 - 2290 14001 - 4002
2. Spares Affected None.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 11 of 134 BOEING SERVICE BULLETIN MD90-28-013
B. Concurrent Requirements None.
C. Reason Frictional heating or sparking may develop from fuel pump failure, wear of fuel pump rotating components, or ingestion of debris by the pump. Electrical faults in a fuel pump may result in electrical arc burn through of a fuel pump. Frictional heating or sparking and electrical arc burn through in fuel pump inlets or priming system outlets exposed (i.e. not covered by fuel) to the tank ullage in combination with the ullage being flammable, may result in a fuel tank ignition event. A fuel tank ignition event could develop with a pump running in an empty tank if the normal shutoff command is delayed or as a result of control system failures that keep the pump in a latent uncommanded running condition. Center wing fuel tanks and auxiliary fuel tank may be subject to this condition since they are normally pumped dry over the course of a flight. If not corrected frictional heating or sparking, electrical arc burn through, or a fuel tank pump running in an empty fuel tank may result in a fuel tank ignition event.
This service bulletin is the result of the safety assessments conducted by Boeing under a Special Federal Aviation Regulation (SFAR) 88, Fuel Tank System Fault Tolerance Evaluation Requirements.
Boeing Fleet Team Digest (FTD) MD-90 FTD 28-03001 is related to this service bulletin.
D. Description This service bulletin installs Ground Fault Interrupter (GFI) relays and cuts/coils/stows wires to center wing and auxiliary fuel tank pump motor neutral circuits.
The work in this service bulletin is done in the maintenance zone(s) given below.
Affected Maintenance Zones ZoneModel 112, 114, 115, 121, 211, 221MD-90-30 E. Compliance Federal Aviation Administration (FAA) Airworthiness Directive AD 2012-18-05 is related to this service bulletin.
Boeing recommends that the change given in this service bulletin be done within 60 months after the effective date of AD 2012-18-05.
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. 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.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 27, 2013 MD90-28-013 12 of 134 BOEING SERVICE BULLETIN MD90-28-013