### Commercial Airplane Group 

# 767 Service Bulletin

Number: 767-35A0034 

## Revision Transmittal Sheet Date: September 2, 1999 Revision 1: June 22, 2000 ATA System: 3510

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 No more work is necessary on airplanes changed as shown in the initial release of this service bulletin. REASON FOR REVISION This revision is sent to advise affected operators of the following: The deletion of the NOTE from the Background and Reason sections. The addition of an exception to the Effectivity section on the Summary page. The removal of the 767-400 effectivity from the Effectivity section. The removal of the reference to another service bulletin from the Reference section. The addition of the vendor equivalent, oxygen hose, part numbers to the Parts Necessary For Each Airplane section. The addition of the sleeving and tape to the Operator Supplied Parts section. The addition of instructions to remove and install the oxygen masks and demand regulators, as well as to install sleeving and tape to the oxygen hoses, and added a NOTE for clarification if the hoses are already installed without the sleeving or tape in the Accomplishment Instructions. The data given in Information Notice 767-35A0034 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: September 2, 1999 Revision 1: June 22, 2000

767-35A0034 Revision Transmittal Page 1 of 1

### Commercial Airplane Group 

# 767 Service Bulletin

Number: 767-35A0034 

## Summary Date: September 2, 1999 Revision 1: June 22, 2000 ATA System: 3510

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 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) 767-SRP-35-0014 is related to this service bulletin. ACTION(PRR B12900-183) Remove the crew oxygen boxes. Replace the existing low pressure hoses with the new non-conductive hoses. Install the crew oxygen boxes. Functional test the system. EFFECTIVITY All 767 airplanes, line numbers 1 through 763, except line number 758, which was accomplished in production. 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 Total Elapsed Time Man-Hours (Hours) 3.5 3.5
MATERIAL INFORMATION None

767-35A0034 Summary Page 1 of 2

### BOEING SERVICE BULLETIN 767-35A0034



### (TYPICAL) APPLICABLE BOX HOSES AS REPLACE OXYGEN

FWDS88678

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 Summary Page 2 of 2

### Commercial Airplane Group 

# 767 Service Bulletin

Number: 767-35A0034 Date: September 2, 1999 Revision 1: June 22, 2000 ATA System: 3510

SUBJECT:OXYGEN - Crew Oxygen - Crew Oxygen System Low Pressure Flex Hose Replacement

THIS SERVICE 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 Document D624T001, 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 B12900-183 for data about this change. Airplane Models: 767-200 767-300 767-300F IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER ABX AIR (ABX) VA803 VA807-VA809 VB101-VB112 AERO CONTINENTE (COH) VE104 AEROFLOT (ARO) VS321 AEROMEXICO (AMX) VF091 VF093 VN556 VS211 AIR ALGERIE (ALG) VK131-VK133 AIR ATLANTA ICELANDIC (AID) VE041 AIR CANADA (ACN) VA701-VA719 VB001-VB002 VB201-VB202 VN931-VN936 AIR CHINA (BEJ) VE064-VE065 VE083-VE086 VK161-VK164

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 Page 1 of 26

### BOEING SERVICE BULLETIN 767-35A0034

AIR DO (HIA) VS176 AIR EUROPA (ARE) VB323 VB328 AIR EUROPE ITALY (EIY) VL931-VL932 VN682 VN811-VN812 VN972 AIR FRANCE (AFA) VN631-VN635 AIR GABON (GBN) VE021 AIR MADAGASCAR (MAD) VE117 VS316 AIR MAURITIUS (MAU) VF001-VF002 AIR NEW ZEALAND (ANZ) VB324 VE101-VE103 VN651-VN658 VN813 AIR PACIFIC (APC) VN676 AIR SEYCHELLES (ASY) VF051 VL941 AIR ZIMBABWE (ZMB) VF061-VF062 AIR 2000 (ATZ) VN921-VN922 VS216 AIRTOURS INT'L AIRWAYS (GUE) VN951-VN953 ALITALIA (ALI) VL701-VL702 VN422-VN427 VS366-VS367 VS401 ALL NIPPON AIRWAYS (ANA) VB113-VB125 VK081-VK113 VN191-VN198 VR401 AMERICAN AIRLINES (AAL) VA501-VA530 VN001-VN041 VS196-VS203 ANSETT AUSTRALIA (ANS) VB051-VB055 VB321-VB322 VE118 VL755 ANSETT WORLDWIDE AVIATION (AWW) VN385 VN388 ASIANA AIRLINES (AAR) VK141-VK148 VL703 VN753 VR426 VW851

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 2

### BOEING SERVICE BULLETIN 767-35A0034

AVIANCA (AVI) VE171-VE172 VF092 VF161 VN152 BOEING (TBC) VA001 VY999 BRITANNIA AIRWAYS (BRI) VB325-VB327 VB329-VB332 VL911-VL914 VN731 VS051-VS054 BRITISH AIRWAYS (BAB) VN111-VN127 VN130-VN137 VS246-VS248 CANADIAN AIRLINES (CDI) VN051-VN054 VN057-VN062 VN751-VN752 CHINA YUNNAN AIRLINES (YUN) VL871-VL873 CITY BIRD (CBD) VN436 VS177 CONDOR (CDF) VN683-VN691 DELTA AIR LINES (DAL) VA301-VA315 VK031-VK056 VL753 VN251-VN276 VN301-VN306 VR471-VR472 VS066-VS070 VS073-VS078 VS266-VS272 EGYPTAIR (EGP) VN211 EL AL ISRAEL AIRLINES (ELA) VB281-VB284 VF101-VF102 ETHIOPIAN AIRLINES (ETH) VE001-VE002 VN371 VS306 EVA AIR (EVA) VB441-VB444 VN471-VN472 VN791-VN792 FIRST SECURITY BANK OF UTAH (FSB) VF072 GULF AIR (GUL) VL003-VL006 VN307-VN310 VN313-VN314 H.M.S.F. AND AMEDEO CORP. (BWN) VF180 IBERIA AIRLINES (IBE) VN546-VN547 ITOCHU CORPORATION (CIT) VF181-VF184 JAPAN AIRLINES (JAL) VB371-VB373 VK001-VK016 VK021-VK022 VK181 VK186 VR461

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 3

### BOEING SERVICE BULLETIN 767-35A0034

K.B.A. FOUNDATION (KBA) VN312 KALAIR USA CORP (KLA) VN311 KLM - ROYAL DUTCH AIRLINES (KLM) VL891-VL900 VS136 LAM (LAM) VF162 LANCHILE AIRLINES (LAN) VN063-VN064 VN531 VN557 VN966-VN971 VR251 VS131-VS133 LAPA ARGENTINA (LAZ) VS111 LAUDA AIR (LAL) VS301-VS302 LAUDA AIR S.P.A. (LDI) VL011 VN242-VN243 VN671 LOT POLISH AIRLINES (LOT) VF041-VF042 VN291-VN293 LTU (LTU) VN171-VN174 VN381 VS061 MALEV HUNGARIAN AIRLINES (HGA) VF171-VF172 MARTINAIR HOLLAND (MTH) VN221-VN225 VN672 MID EAST JET (SKL) VF251 QANTAS (QAN) VE061-VE063 VE066-VE069 VN081-VN099 VS186-VS187 ROYAL BRUNEI AIRLINES (RBA) VN372 VN382-VN384 VN386-VN387 VN637-VN638 SAS (SAS) VF071 VN151 VN153-VN158 VN163-VN168 VN536 SHANGHAI AIRLINES (SHA) VK171 VR421 SKYMARK AIRLINES (SKM) VS261-VS262 SOBELAIR (SBL) VN421 VN636

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 4

### BOEING SERVICE BULLETIN 767-35A0034

SOUTH AFRICAN AIRWAYS (SAA) VE022-VE023 SPANAIR (SPP) VN541-VN542 TACA INTERNATIONAL AIRLINES (TAC) VE116 VN732 TRANSBRASIL (TBL) VB251-VB253 VL001-VL002 VN532 TWA (TWA) VA801-VA802 VA804-VA806 VA810 VB301-VB302 VN376 VN537 VN551 VN561-VN562 VN681 VS206-VS208 UNITED AIRLINES (UAL) VA002-VA020 VN491-VN513 VS091-VS097 UPS (UPS) VR201-VR208 VW701-VW721 US AIRWAYS (USA) VE141-VE152 UZBEKISTAN AIRWAYS (UZB) VL806-VL807 VARIG AIRLINES (VAR) VE121-VE126 VN055-VN056 VN231-VN234 VIETNAM AIRLINES (VIE) VL751-VL752 VL754

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 5

### BOEING SERVICE BULLETIN 767-35A0034

IDENTIFICATION BY VARIABLE NUMBER VA001-VA020 VA301-VA315 VA501-VA530 VA701-VA719 VA801-VA810 VB001-VB002 VB051-VB055 VB101-VB125 VB201-VB202 VB251-VB253 VB281-VB284 VB301-VB302 VB321-VB332 VB371-VB373 VB401 VB441-VB444 VE001-VE003 VE021-VE023 VE041-VE043 VE061-VE069 VE083-VE086 VE101-VE104 VE116-VE118 VE121-VE126 VE141-VE152 VE171-VE172 VF001-VF002 VF041-VF042 VF051 VF061-VF062 VF071-VF072 VF091-VF093 VF101-VF102 VF161-VF162 VF171-VF172 VF180-VF184 VF251 VK001-VK016 VK021-VK022 VK031-VK056 VK081-VK113 VK131-VK133 VK141-VK148 VK161-VK164 VK171 VK181 VK186 VL001-VL006 VL011 VL701-VL703 VL751-VL755 VL806-VL807 VL871-VL873 VL891-VL900 VL911-VL914 VL931-VL932 VL941 VN001-VN041 VN051-VN064 VN081-VN099 VN111-VN127 VN130-VN137 VN151-VN158 VN163-VN168 VN171-VN174 VN191-VN198 VN211-VN212 VN221-VN225 VN231-VN234 VN241-VN243 VN251-VN276 VN291-VN293 VN301-VN314 VN371-VN372 VN376 VN381-VN388 VN421-VN427 VN436 VN471-VN472 VN491-VN513 VN531-VN532 VN536-VN537 VN541-VN542 VN546-VN547 VN551 VN556-VN557 VN561-VN562 VN631-VN638 VN651-VN658 VN671-VN672 VN676 VN681-VN691 VN731-VN732 VN751-VN753 VN791-VN792 VN811-VN813 VN921-VN922 VN931-VN936 VN951-VN953 VN966-VN972 VR201-VR208 VR251 VR401 VR421 VR426 VR461 VR471-VR472 VS051-VS054 VS061 VS066-VS070 VS073-VS078 VS091-VS097 VS111 VS131-VS133 VS136 VS176-VS177 VS186-VS187 VS196-VS203 VS206-VS208 VS211 VS216 VS246-VS248 VS261-VS262 VS266-VS272 VS301-VS302 VS306 VS316 VS321 VS366-VS367 VS401 VW701-VW721 VW851 VY999 2. Spares Affected None

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 6

### BOEING SERVICE BULLETIN 767-35A0034

B. Concurrent Requirements None C. Reason The changes provided in this service bulletin will help prevent damage to the low pressure oxygen flex hoses that may 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. Revision 1 is sent to advise affected operators of the following: The deletion of the NOTE from the Background and Reason sections. The addition of an exception to the Effectivity section on the Summary page. The removal of the 767-400 effectivity from the Effectivity section. The removal of the reference to another service bulletin from the Reference section. The addition of the vendor equivalent, oxygen hose, part numbers to the Parts Necessary For Each Airplane section. The addition of the sleeving and tape to the Operator Supplied Parts section. The addition of instructions to remove and install the oxygen masks and demand regulators, as well as to install sleeving and tape to the oxygen hoses, and added a NOTE for clarification if the hoses are already installed without the sleeving or tape in the Accomplishment Instructions section. Boeing Service Related Problem (SRP) 767-SRP-35-0014 is related to this service bulletin. D. Description Remove the crew oxygen boxes. Replace the existing low pressure hoses with the new non-conductive hoses. Install the crew oxygen boxes. Functional test the system. Revision 1 - No more work is necessary on airplanes changed as shown in the initial release of this service bulletin. An evaluation form is attached to this service bulletin. Please use this form to tell us what you think of the quality of this service bulletin. E. Compliance Boeing recommends compliance at the earliest opportunity when manpower, material and facilities are available.

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 7

### BOEING SERVICE BULLETIN 767-35A0034

F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable Federal Aviation Regulations (FAR) and are FAA approved. This service bulletin and the FAA approval were based on the airplane in its original Boeing delivery configuration or as modified by other FAA 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.

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 8

### BOEING SERVICE BULLETIN 767-35A0034

G. Manpower The table below shows an estimate of the man-hours necessary to do this change for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator man-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 examine the work - Time to cure the materials - Time to make the parts - Time to find the tools. Task Number of Persons Man-Hours Elapsed Time (Hours) Access 1 1.0 1.0 Replace Hoses 1 1.5 1.5 Restore 1 1.0 1.0 TOTAL FOR EACH AIRPLANE 3.5 3.5
H. Weight and Balance Changes None I. Electrical Load Data Not changed

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 9

### BOEING SERVICE BULLETIN 767-35A0034

J. References 1. Existing Data: a. Engineering Change Memo PRR B12900-183 b. Service Related Problem (SRP) 767-SRP-35-0014 c. 767 Maintenance Manual (AMM) Subject 12-15-08, 20-41-00, 35-00-00, 35-11-00, 35-11-51 2. Data supplied with this service bulletin: None 3. Installation Drawings Used in the Preparation of This Service Bulletin: Drawing Number Title 232T8002 EQUIPMENT INSTL - CREW OXYGEN 278T4100 TUBING INSTALLATION CONTROL CAB SIDEWALL RH, STA 138 THRU 249 278T4101 TUBING INSTALLATION CONTROL CAB SIDEWALL LH, STA 138 THRU 249 278T4104 TUBING INSTALLATION FLT INSTR PNL AND CAP PTN, STA 197 THRU 247 278T4105 TUBING INSTALLATION CENTER CONSOLE AREA P8, P9 AND P10 278T4122 TUBING INSTALLATION CROWN AFT RH, STA 249 THRU 431 These drawings were used to prepare this service bulletin. These drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. These drawings may not be applicable to all airplane configurations or operators. K. Publications Changed Publication Chapter-Section 767 Illustrated Parts Catalog 35-11 L. Interchangeability and Intermixability Refer to Paragraph 2.E., Existing Parts Accountability, for interchangeability and intermixability information.

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 10

### BOEING SERVICE BULLETIN 767-35A0034

2. MATERIAL INFORMATION A. Material - Price and Availability The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary For Each Airplane. As an alternative, operators can purchase the parts from Boeing Spares. This service bulletin does not show the Boeing price and supply data. B. Industry Support Information Boeing warranty remedies are not available for the configuration changes given in this service bulletin. C. Parts Necessary For Each Airplane 1. Kits: None 2. Parts and Materials Supplied by the Operator: QTY Boeing Part Number / Vendor Part Number Name

(a) 60B50059-606 / 38001-606 (b) Hose Assy (a) 60B50059-607 / 38001-607 (b) Hose Assy (a) 60B50059-608 / 38001-608 (b) Hose Assy (a) 60B50059-610 / 38001-610 (b) Hose Assy (a) 60B50059-613 / 38001-613 (b) Hose Assy 2 232T8002-100 (.750 DIA X 16 inches) (c) Sleeve (Black) 1 Roll 232T8002-26 (d) (e) Protective Tape (a) For hose quantity requirements, see Illustrated Parts Catalog 35-11 for customer specific configurations. (b) HydraFlow (V24984) 13529 East 166th Street Cerritos, CA 90701-2203 (USA) (c) See the Qualified Products List at the end of the Boeing Material Specification (BMS13-52, Type V) for supplier data. (d) Permacel P29 protective tape is 3/4 inches wide X 36 yards long. (e) Permacel Division, Johnson & Johnson (V99742) U.S. Highway 101, P.O. Box 671 New Brunswick, NJ 08903 (USA) D. Parts Necessary to Change Spares None

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 11

### BOEING SERVICE BULLETIN 767-35A0034

E. Existing Parts Accountability Existing Part Number RUC Name QTY New Part Number PNC RC 60B50059-70 DIS Hose Assy (a) 60B50059-606 S A 60B50059-81 DIS Hose Assy (a) 60B50059-607 S A 60B50059-94 DIS Hose Assy (a) 60B50059-608 S A 60B50059-101 DIS Hose Assy (a) 60B50059-610 S A 60B50059-130 DIS Hose Assy (a) 60B50059-613 S A (a) For hose quantity requirements, see Illustrated Parts Catalog 35-11 for customer specific configurations. The parts shown below are changed as shown in this service bulletin. RUC Recommended Use Code DIS - Discard the part. PNC Part Number Code S- To get a new part, use this part number in your order. - This is the part number after the change given in this service bulletin. - This part is used in production. RC Replacement Code A - Do not use the existing part to replace the new or changed part. F. Special Tooling - Price and Availability None G. Special Tooling Necessary to do This 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.

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 12

### BOEING SERVICE BULLETIN 767-35A0034

3. ACCOMPLISHMENT INSTRUCTIONS GENERAL NOTES 1. The paragraphs identified with a letter give the general work instructions and the necessary tests. The instructions identified with numbers on the figures give the recommended sequence of steps. 2. Obey all of the warnings and cautions given in the specified manual sections. WORK INSTRUCTIONS CAUTION: OXYGEN SYSTEM COMPONENTS REQUIRE SPECIAL CARE AND HANDLING PROCEDURES. REVIEW THE SAFETY AND MAINTENANCE PROCESSES SHOWN IN 767 AMM 35-00-00 PRIOR TO MAKING ANY CHANGES TO THE OXYGEN SYSTEM. A. Remove the oxygen masks, demand regulators, and the oxygen stowage boxes as shown in 767 AMM 35-11-51 or operator's equivalent procedure. B. Remove the existing low pressure oxygen hoses as shown in Figures 1, 2, 3, 4, and 5. NOTE: If the low pressure oxygen hoses have already been installed as shown in this service bulletin, installation of the sleeving and the application of the tape is not required at this time. However, it is recommended that at the next available opportunity, the sleeving be installed and the protective tape applied to the low pressure oxygen hoses as applicable. C. Install the sleeving on the captain and first officer's low pressure oxygen hoses as shown in Figure 6. D. Apply protective tape to all other crew low pressure oxygen hoses as shown in Figure 7. NOTE: Ensure that the hose assembly elbows and unions do not move during hose replacement. Orientation of the elbows and unions are essential in maintaining proper clearances with other structure. E. Install the applicable new non-conductive oxygen hoses as shown in Figures 1, 2, 3, 4, and 5. F. Install the oxygen stowage boxes, demand regulators, and oxygen masks as shown in 767 AMM 35-11-51 or operator's equivalent procedure. G. Functional test the crew oxygen system as shown in 767 AMM 35-11-00, "Crew Oxygen High Pressure Leakage Test," "Crew Oxygen Stowage Box Test (MIC)," "Crew Oxygen Mask/Regulator Test," or operator's equivalent procedure. H. Ensure the Crew Oxygen Cylinder Valve is open.

I. Put the airplane back to a serviceable condition.

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 13

### BOEING SERVICE BULLETIN 767-35A0034

FIGURE TABLE OF CONTENTS Title Page FIGURE 1. OXYGEN BOX HOSE TYPICAL LOCATIONS.. . . . . . . . . . . . . . . . . . . . . . . 15 FIGURE 2. CAPTAIN AND FIRST OFFICER'S OXYGEN BOX HOSE REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 FIGURE 3. RIGHT OBSERVER'S SEAT OXYGEN BOX HOSE REPLACEMENT. . . . . 20 FIGURE 4. LEFT OBSERVER'S SEAT OXYGEN BOX HOSE REPLACEMENT .. . . . . 22 FIGURE 5. SUPERNUMERARY SEAT'S OXYGEN BOX HOSE REPLACEMENT. . . . . 24 FIGURE 6. SLEEVE INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 FIGURE 7. TAPE APPLICATION . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

September 2, 1999 767-35A0034 Revision 1: June 22, 2000 14

### BOEING SERVICE BULLETIN 767-35A0034

FWD FIGURE 5 SEE

FIGURE 3 SEE

FIGURE 4 SEE FIGURE 2 SEE

FIGURE 2 SEES88575

FIGURE 1. OXYGEN BOX HOSE TYPICAL LOCATIONS September 2, 1999 SHEET 1 OF 1 767-35A0034 Revision 1: June 22, 2000 15

### BOEING SERVICE BULLETIN 767-35A0034

B SEE SEE AS88622

FIGURE 2. CAPTAIN AND FIRST OFFICER'S OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 1 OF 4 767-35A0034 Revision 1: June 22, 2000 16

### BOEING SERVICE BULLETIN 767-35A0034

4 3 2



## A CAPTAIN'S CONSOLE 1

INBD UP FWDS88623

FIGURE 2. CAPTAIN AND FIRST OFFICER'S OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 2 OF 4 767-35A0034 Revision 1: June 22, 2000 17

### BOEING SERVICE BULLETIN 767-35A0034

1 23



## FIRST OFFICER'S CONSOLE 4



## B INBD UP FWDS88624

FIGURE 2. CAPTAIN AND FIRST OFFICER'S OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 3 OF 4 767-35A0034 Revision 1: June 22, 2000 18

### BOEING SERVICE BULLETIN 767-35A0034

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME REFERENCES QTY NOTES 1 Remove / Keep Oxygen Box 767 AMM 35-11-51 2
- 2 Remove / Discard Hose Assy 767 AMM 35-11-51 2 Discard the Hose Assy after recording the part number. 3 Install Hose Assy 767 AMM 35-11-51 2 See Existing Parts Accountability for applicable new Hose Assy. 4 Install / Kept Oxygen Box 767 AMM 35-11-51 2
-

FIGURE 2. CAPTAIN AND FIRST OFFICER'S OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 4 OF 4 767-35A0034 Revision 1: June 22, 2000 19

### BOEING SERVICE BULLETIN 767-35A0034

FWD

6 1

4 3

5 2



## A SEE A

FWDS88630

FIGURE 3. RIGHT OBSERVER'S SEAT OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 1 OF 2 767-35A0034 Revision 1: June 22, 2000 20

### BOEING SERVICE BULLETIN 767-35A0034

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME REFERENCES QTY NOTES 1 Remove / Keep Blank Panel
- 1
- 2 Remove / Keep Oxygen Box 767 AMM 35-11-51 1
- 3 Remove / Discard Hose Assy 767 AMM 35-11-51 1 Discard the Hose Assy after recording the part number. 4 Install Hose Assy 767 AMM 35-11-51 1 See Existing Parts Accountability for applicable new Hose Assy. 5 Install / Kept Oxygen Box 767 AMM 35-11-51 1
- 6 Install / Kept Blank Panel
- 1
-

FIGURE 3. RIGHT OBSERVER'S SEAT OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 2 OF 2 767-35A0034 Revision 1: June 22, 2000 21

### BOEING SERVICE BULLETIN 767-35A0034

FWD

3

5 2 4 16 SEE A



## AFWDS88641

FIGURE 4. LEFT OBSERVER'S SEAT OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 1 OF 2 767-35A0034 Revision 1: June 22, 2000 22

### BOEING SERVICE BULLETIN 767-35A0034

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME REFERENCES QTY NOTES 1 Remove / Keep Panel
- 1
- 2 Remove / Keep Oxygen Box 767 AMM 35-11-51 1
- 3 Remove / Discard Hose Assy 767 AMM 35-11-51 1 Discard the Hose Assy after recording the part number. 4 Install Hose Assy 767 AMM 35-11-51 1 See Existing Parts Accountability for the applicable new Hose Assy. 5 Install / Kept Oxygen Box 767 AMM 35-11-51 1
- 6 Install / Kept Panel
- 1
-

FIGURE 4. LEFT OBSERVER'S SEAT OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 2 OF 2 767-35A0034 Revision 1: June 22, 2000 23

### BOEING SERVICE BULLETIN 767-35A0034

4 1 3 2

FWD (3 LOCATIONS) (3 LOCATIONS)S88677
The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME REFERENCES QTY NOTES 1 Remove / Keep Oxygen Box 767 AMM 35-11-51 3
- 2 Remove / Discard Hose Assy 767 AMM 35-11-51 4 Discard the Hose Assemblies after recording the part numbers. 3 Install Hose Assy 767 AMM 35-11-51 4 See Existing Parts Accountability for the applicable new Hose Assy. 4 Install / Kept Oxygen Box 767 AMM 35-11-51 3
-

FIGURE 5. SUPERNUMERARY SEAT'S OXYGEN BOX HOSE REPLACEMENT September 2, 1999 SHEET 1 OF 1 767-35A0034 Revision 1: June 22, 2000 24

### BOEING SERVICE BULLETIN 767-35A0034

2

1

TYPICAL FOR BOTH ENDS OF HOSE CAPTAIN AND FIRST OFFICER 0.75 0.75 1.50V27587
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. STEP TASK NAME PART NUMBER QTY NOTES 1 Install Sleeve 232T8002-100 2
- 2 Apply Protectve Tape 232T8002-26 AR Permacel P29 on each end of the sleeving to prevent slipping.

FIGURE 6. SLEEVE INSTALLATION September 2, 1999 SHEET 1 OF 1 767-35A0034 Revision 1: June 22, 2000 25

### BOEING SERVICE BULLETIN 767-35A0034

60 DEGREES

OXYGEN HOSE 0.0625 OVERLAP 1V27590
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. STEP TASK NAME PART NUMBER QTY NOTES 1 Apply Protective Tape 232T8002-26 AR 2 layers of Permacel P29 along the full length of the low pressure oxygen hoses in all locations except the captain and first officer's position.

FIGURE 7. TAPE APPLICATION September 2, 1999 SHEET 1 OF 1 767-35A0034 Revision 1: June 22, 2000 26

### Commercial Airplane Group 

# 767 Service Bulletin

Number: 767-35A0034 

## Evaluation Form Date: September 2, 1999 Revision 1: June 22, 2000 ATA System: 3510 Prepared By: Chris Starr

SUBJECT:OXYGEN - Crew Oxygen - Crew Oxygen System Low Pressure Flex Hose Replacement

Use this evaluation form to tell us what you think of the quality of this service bulletin. We will use the data that you give us to improve the quality of our service bulletins. NOTE: Please do not use this evaluation form to tell us to make changes to your manuals. To make these changes, please use a Publication Change Request (PCR) form. Please give us this data: (If necessary, please use the other side. Thank you for the time you used to give us your comments.) OPERATOR: TODAY'S DATE: PREPARED BY: TITLE: ORGANIZATION: TELEX CODE: TELEPHONE NUMBER: BASE: Please rate the quality of this service bulletin: (good)4321 (poor) Please rate the quality of the illustrations: (good)4321 (poor) Will you do the change given by this service bulletin? Yes No If not, please explain: Is this service bulletin easy to understand? Yes No If not, please explain: Is this service bulletin easy to use? Yes No If not, please explain: Are the Planning Information, Material Information, and Accomplishment Instructions accurate? Yes No If not, please explain: Is the Manpower estimate accurate? Yes No If not, please explain:
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