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October 28, 1999 Revision 1: May 15, 2003 747-35A2101 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1o f4 0 Commercial Airplane Group 747 Service Bulletin Number: 747-35A2101 Date: October 28, 1999 Revision 1: May 15, 2003 ATA System: 3510 CAS SUBJECT: OXYGEN - Crew Oxygen - Crew Oxygen System Low Pressure Flex Hose Replacement

BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 1999 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.

This document includes proprietary information owned by The Boeing Company and/or one or more third parties. Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.

Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, DC-8, DC-9, DC-10, MD-10, MD-11, MD-80, MD-88, MD-90, and the red-white-and-blue Boeing livery 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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October 28, 1999 Revision 1: May 15, 2003 747-35A2101 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3o f4 0 Commercial Airplane Group 747 Service Bulletin Number: 747-35A2101 Revision Transmittal Sheet Date: October 28, 1999 Revision 1: May 15, 2003 ATA System: 3510 CAS SUBJECT: OXYGEN - Crew Oxygen - Crew Oxygen System Low Pressure Flex Hose Replacement This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION More work is necessary on airplanes changed as shown in the initial release of this service bulletin.

If the protective tape was not applied to the hoses, apply the tape to all the new flight compartment hoses at the next available opportunity.

REASON FOR REVISION This revision is sent to advise affected operators of the following:

• The NOTE in the Background and Reason section was revised.

 The addition of the vendor equivalent, oxygen hose, part numbers and the addition of the tape, part number in the Parts Necessary For Each Airplane section.

 The addition of a NOTE at the beginning of the Accomplishment Instructions to clarify which oxygen hoses are to be replaced.

 The addition of instructions to remove and install the mask and demand regulator, along with the oxygen boxes.

 The addition of a step in the Accomplishment Instructions to apply protective tape to the hoses.

 The addition of Figure 2 for the protective tape application.

 The data given in Information Notice 747-35A2101 IN 01 is included in this revision.

Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes.

Pages with no vertical lines have no important changes.

REVISION HISTORY Original Release: October 28, 1999 Revision 1: Not Released

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October 28, 1999 Revision 1: May 15, 2003 747-35A2101 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5o f4 0 Commercial Airplane Group 747 Service Bulletin Number: 747-35A2101 Summary Date: October 28, 1999 Revision 1: May 15, 2003 ATA System: 3510 CAS SUBJECT: OXYGEN - Crew Oxygen - Crew Oxygen System Low Pressure Flex Hose Replacement

CONCURRENT REQUIREMENTS None.

BACKGROUND The changes provided in this service bulletin will help prevent damage to the low pressure oxygen flex hoses that may be subjected to electrical current. An electrical grounding condition can cause the hose to melt or burn.

One operator has reported damaged oxygen supply hoses on another Boeing model in August of 1997. This damage has occurred due to a short circuit in the 757 Audio Select Panel. It sent an electrical current through the support structure to the flight crew mask stowage box. This caused the spring inside the low pressure oxygen hose to act as an electrical conductor and heat up. This caused the hose to burn through.

Also, a similar occurrence on a 737 was reported due to improper maintenance.

This service bulletin will replace low pressure oxygen hoses with non-conductive hoses located on the flight deck. The replacement of the oxygen hoses will help prevent electrical current from passing through the supporting spring which can cause the hose to melt or burn.

Boeing Service Related Problem (SRP) 747-SRP-35-0014 is related to this service bulletin.

Note: Operators affected by Boeing Service Bulletin 747-35A2088 should follow the flight deck hose routing and clearance instructions provided by Service Bulletin 747-35A2088. All other operators should follow the instructions in Service Bulletin 747-35A2101.

ACTION (PRR 85900-226) Remove the crew oxygen boxes. Replace the existing low pressure hoses with new non-conductive hoses.

Install the crew oxygen boxes. Functional test the system.

EFFECTIVITY All 747 airplanes line number 1 through 1229 as applicable.

October 28, 1999 Revision 1: May 15, 2003 747-35A2101 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 6o f4 0 BOEING SERVICE BULLETIN 747-35A2101

COMPLIANCE Boeing recommends compliance at the earliest opportunity when manpower, material and facilities are available.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

MANPOWER

MATERIAL INFORMATION None.

Airplanes Total Task Hours Elapsed Hours 747 Classics 2.5 2.5 747-400/D/F 1.75 1.75

October 28, 1999 Revision 1: May 15, 2003 747-35A2101 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7o f4 0 BOEING SERVICE BULLETIN 747-35A2101 (TYPICAL CONFIGURATION)

HOSES AS APPLICABLE

REPLACE OXYGEN BOX

HOSES AS APPLICABLE

REPLACE OXYGEN BOX (TYPICAL CONFIGURATION) 747-400 FLIGHT COMPARTMENT 747 FLIGHT COMPARTMENT S93303

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October 28, 1999 Revision 1: May 15, 2003 747-35A2101 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9o f4 0 Commercial Airplane Group 747 Service Bulletin Number: 747-35A2101 Date: October 28, 1999 Revision 1: May 15, 2003 ATA System: 3510 CAS SUBJECT: OXYGEN - Crew Oxygen - Crew Oxygen System Low Pressure Flex Hose Replacement

1. PLANNING INFORMATION A. Effectivity

1. Airplanes Refer to Service Bulletin Index Document D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.

This service bulletin is for the airplanes shown below. An equivalent change is on subsequent production airplanes. Refer to PRR 85900-226 for data about this change.

Airplane models:

747-100 747-100B 747-100B SUD 747-200B 747-200C 747-200F 747-300 747-400 747-400D 747-400F 747SP 747SR

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

AAR AIRCRAFT SALES AND LEASING (AFD) 1 RA313 RA315 RB681–RB682 RD134

AERO CONTROLS (AEO) 1 RA722–RA723

AEROLINEAS ARGENTINAS (ARG) 1 RD053 RD122–RD127

AGES AIRCRAFT SALES & LEASING (AGJ) 1 RB004

AIR ATLANTA ICELANDIC (AID) 1 RA526 RA534 RB411–RB413 RD141 RD143 RD352–RD355 RD414 RD472–RD473 RD647–RD648 RD771 RS332–RS333

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AIR CANADA (ACN) 1 RA750 RD531 RT101–RT103 RT701–RT702 RU059

AIR CHINA (BEJ) 1 RD781–RD783 RM811–RM813 RR451 RT031–RT035 RT878–RT880

AIR FRANCE (AFA) 1 RA253 RD271–RD272 RD651–RD655 RD657–RD659 RD721–RD722 RD791–RD792 RR302 RR304 RR306–RR309 RR332 RS751–RS752 RT071–RT075 RT121 RT591 RT711–RT716

AIR GABON (GBN) 1 RD661

AIR INDIA (AIN) 1 RA728–RA731 RS781–RS782 RU001–RU006

AIR MADAGASCAR (MAD) 1 RD561

AIR NAMIBIA (NAM) 1R T 1 3 7

AIR NEW ZEALAND (ANZ) 1 RM082 RM191–RM192 RT671–RT673 RT703 RT932

AIR PACIFIC (APC) 1 RD518

AIR PULLMANTUR (PUL) 1R S 3 3 1

AIRFREIGHT EXPRESS LIMITED (AIF) 1 RD442 RR221

ALBARAKA (AAB) 1R B 1 0 2

ALITALIA (ALI) 1 RD751 RR561

ALL NIPPON AIRWAYS (ANA) 1 RB689–RB695 RB697 RD231–RD232 RM231–RM232 RT751–RT757 RT776–RT777 RU831–RU841

AMIRI FLIGHT (ABD) 1 RH102 RM084

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ASIANA AIRLINES (AAR) 1 RM071 RM861 RR746–RR748 RT131–RT136 RU032

ATLAS AIR (TLS) 1 RB683–RB685 RD044 RD361–RD366 RD411–RD412 RD641–RD643 RD646 RD691–RD692 RD752–RD755 RJ333 RM892–RM899 RR301 RR303 RS721–RS722 RS762

AVIATION EXPOSURE MANAGEMENT (EXU) 1 RD131–RD132 AVIATION PARTNERS L.L.C. (APM) 1 RS241

BAHRAIN ROYAL FLIGHT (BHR) 1 RG009

BOEING (TBC) 1 RB688 RR222–RR223 BOEING AIRCRAFT HOLDING CO. (BHC) 1 RD181 RD451–RD456

BOEING CAPITAL CORPORATION (ZMF) 1 RB687 RD072 RJ132 RR201

BRITISH AIRWAYS (BAB) 1 RD139 RD311 RM096–RM097 RM136–RM145 RM261–RM264 RT471–RT499 RU121–RU132 C.A.L. CARGO AIR LINES (CRG) 1 RJ331–RJ332 C.I.T. LEASING CORPORATION (TCI) 1 RD047

CAMEROON AIRLINES (CAM) 1 RS238

CARGOLUX AIRLINES (CLX) 1 RM881–RM883 RR701 RR721–RR724

CATHAY PACIFIC AIRWAYS (CAT) 1 RD358 RD581–RD583 RR441–RR442 RR531 RR951–RR952 RT451–RT469

CHINA AIRLINES (CHI) 1 RD551 RM021–RM024 RR521–RR522 RT631–RT634 RT636–RT640

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CONTINENTAL AIRLINES (CAL) 1 RA561 RB005–RB006

CORSAIR (COR) 1 RA023 RA675 RG124 RS233 RS235 RS237 RS239–RS240

DRAGONAIR (DRG) 1 RS741 RS743 RS771

DUBAI AIR WING (DAW) 1 RD622 RG191 RG193

EGYPTAIR (EGP) 1 RS731–RS732

EL AL ISRAEL AIRLINES (ELA) 1 RA784 RB007 RJ152 RM091 RR225–RR226 RU081–RU083

EUROPEAN AVIATION AIR CHARTER (EUL) 1 RD135–RD138 RD140

EVA AIR (EVA) 1 RM116–RM117 RT161–RT168 RT951–RT955

EVERGREEN INTERNATIONAL A/L (EVR) 1 RA004 RA028 RA631 RA633 RB604 RB607 RD041–RD043 RJ131 RJ133

FINOVA (GRB) 1 RA015 RA651 RS761

FLEET CAPITAL LEASING (SBC) 1 RA106 RD001–RD002

FLIGHTPLAN INTERNATIONAL (FLP) 1R A 0 0 3

GARUDA INDONESIA (GIA) 1 RD421–RD424 RT931 RU061–RU062

GE (GEC) 1R A 0 1 6

GE CAPITAL CORPORATION (GEF) 1 RA005 RA007 RA013 RA027 RA634

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