Commercial 

Airplanes 747

Service Bulletin

SPECIAL ATTENTION

Number: 747-35-2132

Original Issue: June 08, 2015

ATA System: 3521

SUBJECT: OXYGEN - Passenger - Passenger Oxygen System - Oxygen Tube Connector

Inspection and Oxygen Component 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.

ECCN: 9E991

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Unpublished Work.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.

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BLANK PAGE
Table of Contents

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2. Data Supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 13

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

M. Software Accomplishment Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

C. Parts Necessary for Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1. Kits/Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2. Parts and Materials Supplied by the Operator . . . . . . . . . . . . . . . . . . . . . . . . 16

3. Parts Modified and Reidentified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4. Parts Removed and Not Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 16

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

FIGURE 1: PASSENGER COMPARTMENT, LEFT SIDE, STOWAGE BIN BUCKET REMOVAL . . . 21

FIGURE 2: PASSENGER COMPARTMENT, RIGHT SIDE, STOWAGE BIN BUCKET REMOVAL . . 23

FIGURE 3: OXYGEN TUBE COUPLER ASSEMBLY - GENERAL VISUAL INSPECTION . . . . . . . 25

FIGURE 4: PASSENGER COMPARTMENT, LEFT SIDE, STOWAGE BIN BUCKET INSTALLATION . 27

FIGURE 5: PASSENGER COMPARTMENT, RIGHT SIDE, STOWAGE BIN BUCKET INSTALLATION . 29

APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 1: PASSENGER OXYGEN

SYSTEM - OXYGEN TUBING ATTACHED TO THE OUTBOARD STOWAGE BIN SUPPORT

ASSEMBLIES - INSPECTION AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . 31

APPENDIX B: PART DEMAND INTENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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BLANK PAGE
Commercial 

Airplanes 747

Service Bulletin

SPECIAL ATTENTION

Summary Number: 747-35-2132

Original Issue: June 08, 2015

ATA System: 3521

SUBJECT: OXYGEN - Passenger - Passenger Oxygen System - Oxygen Tube Connector

Inspection and Oxygen Component Installation

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

CONCURRENT REQUIREMENTS

None.

BACKGROUND

Accomplishment of this service bulletin will prevent oxygen leaks from oxygen tube couplings in the passenger

oxygen system. If this service bulletin is not done, oxygen could leak from incorrectly installed oxygen tube

couplings which would result in depletion of emergency oxygen at a faster rate than expected and reduce the

passengers' and crews' protection from hypoxia at elevated cabin altitudes. Also an oxygen leak in a confined

space can cause an oxygen-rich environment, which would increase the risk of a fire.

Boeing suspects that some airplanes could have oxygen components (two 'o'-rings, sleeve assembly and coupler

assembly) missing from oxygen tube couplings attached to the outboard stowage bin support assemblies. Boeing

believes that these airplanes were delivered with the correct configuration of oxygen components. However,

because of an error in an engineering drawing and related parts list, which omitted part number call outs for

some oxygen components, subsequent rework of the oxygen tubing could put the couplings in an incorrect

configuration.

This service bulletin gives instructions to do a general visual inspection of the oxygen tubing couplings that are

attached to the outboard stowage bin support assemblies, to identify if any oxygen components are missing. If

any oxygen components are found missing, new oxygen components are installed to achieve a correct

configuration.

Boeing Service Related Problem (SRP) 747-8-SRP-35-0056 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 747 FTD 35-14001 is related to this service bulletin.

This table is provided to operators for planning purposes only. Refer to the applicable sections for more

information.

Planning Data Affected Reference

Spares Affected No Paragraph 1.A.2., Spares Affected

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Planning Data Affected Reference

Paragraph 1.E., Compliance and Paragraph

1.F., Approval

AD Related Yes

Weight and Balance Change No Paragraph 1.H., Weight and Balance Changes

Electrical Load Changed No Paragraph 1.I., Electrical Load Data

Publications Affected Yes Paragraph 1.K., Publications Affected

Airplane Flight Operations Affected (Flight Crew No Paragraph 1.K., Publications Affected

Operations Manual and/or FAA Approved Airplane Flight Manual)

Kits/Parts Required Yes Paragraph 2.C.1., Kits/Parts

Paragraph 2.C.2., Parts and Materials Supplied

by the Operator

Operator Supplied Parts/Material No

Paragraph 2.F., Special Tooling Necessary to

do this Service Bulletin

Special Tooling Required No

ACTION

In the main deck passenger compartment, do a general visual inspection of sixteen passenger oxygen coupler

assemblies for missing oxygen components (two 'o'-rings, sleeve assembly and coupler assembly). If oxygen

components are not installed, install new oxygen components.

EFFECTIVITY

747-8 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 April 18, 2014. 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.

Refer to Paragraph 2.A., Material - Price and Availability.

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BOEING SERVICE BULLETIN 747-35-2132
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.

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BLANK PAGE
Commercial 

Airplanes 747

Service Bulletin

SPECIAL ATTENTION

Number: 747-35-2132

Original Issue: June 08, 2015

ATA System: 3521

SUBJECT: OXYGEN - Passenger - Passenger Oxygen System - Oxygen Tube Connector

Inspection and Oxygen Component Installation

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index D6-30300 Part 3 for Airplane Variable Number, Line Number, and

Serial Number data.

This service bulletin is applicable to 747-8 Airplanes, line numbers 1443, 1446, 1449, 1451, 1453,

1456, 1459, 1466, 1468, 1470, 1472, 1475, 1477, 1480 and 1492 in 1 Group. The Variable Numbers

and Group Information for the applicable airplanes is given below.

GROUP CONFIGURATION DESCRIPTION

747-8 Airplanes that were delivered with outboard stowage bin support

assemblies 413U1122-543 and 413U1122-544.

1 -

Airplane Models:

747-8

Variable Number Group

RC004 - RC008 1

RC022 - RC031 1

2. Spares Affected

None.

B. Concurrent Requirements

None.

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C. Reason

Accomplishment of this service bulletin will prevent oxygen leaks from oxygen tube couplings in the

passenger oxygen system. If this service bulletin is not done, oxygen could leak from incorrectly installed

oxygen tube couplings which would result in depletion of emergency oxygen at a faster rate than

expected and reduce the passengers' and crews' protection from hypoxia at elevated cabin altitudes.

Also an oxygen leak in a confined space can cause an oxygen-rich environment, which would increase

the risk of a fire.

Boeing suspects that some airplanes could have oxygen components (two 'o'-rings, sleeve assembly

and coupler assembly) missing from oxygen tube couplings attached to the outboard stowage bin

support assemblies. Boeing believes that these airplanes were delivered with the correct configuration

of oxygen components. However, because of an error in an engineering drawing and related parts list,

which omitted part number call outs for some oxygen components, subsequent rework of the oxygen

tubing could put the couplings in an incorrect configuration.

This service bulletin gives instructions to do a general visual inspection of the oxygen tubing couplings

that are attached to the outboard stowage bin support assemblies, to identify if any oxygen components

are missing. If any oxygen components are found missing, new oxygen components are installed to

achieve a correct configuration.

Boeing Service Related Problem (SRP) 747-8-SRP-35-0056 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 747 FTD 35-14001 is related to this service bulletin.

D. Description

In the main deck passenger compartment, do a general visual inspection of sixteen passenger oxygen

coupler assemblies for missing oxygen components (two 'o'-rings, sleeve assembly and coupler

assembly). If oxygen components are not installed, install new oxygen components.

The work in this service bulletin is done in the maintenance zone(s) given below.

Affected Maintenance Zones

Model Zone

747-8 231, 232, 241, 242, 251, 252, 261, 262

E. 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.

A logic diagram showing compliance tasks and compliance times is included as an aid in APPENDIX

A.

Do the required actions in accordance with Paragraph 3. Accomplishment Instructions.

The Conditions, Actions and Compliance times shown apply to each location independently.

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BOEING SERVICE BULLETIN 747-35-2132
TABLE 1: PASSENGER OXYGEN SYSTEM - OXYGEN TUBE CONNECTOR GENERAL VISUAL

INSPECTION AND OXYGEN COMPONENT INSTALLATION

Repeat Interval

(Not to Exceed)

Condition Action Compliance Time

Within 72 months -

after the original issue date of this

service bulletin.

At sixteen locations, open

the oxygen tubing coupler

assemblies, attached to

the outboard stowage bin

support assemblies, and

do a general visual inspection to identify if oxygen components are installed. (b)

All airplanes

Before further -

flight.

Install new 'o'-rings and

close the coupler assembly. (a)

CONDITION 1: ALL OXYGEN COMPONENTS INSTALLED.

Before further -

flight.

Install new 'o'-rings. Install new oxygen components (sleeve assembly

or coupler assembly) that

are found missing. (a)

CONDITION 2: ANY OXYGEN COMPONENTS NOT

INSTALLED.

(a) This is a terminating action for this service bulletin.

(b) The oxygen components for this inspection are two 'o'-rings, part number 474W2090-30,

sleeve assembly, part number 474W2090-20, and coupler assembly, part number

474W2090-10.

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, as well as European

Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved

airplanes listed in the service bulletin effectivity. 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.

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.

G. Manpower

The table below shows an estimate of the task 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

task 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

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BOEING SERVICE BULLETIN 747-35-2132
• Time to inspect the work

• Time to cure the materials

• Time to make the parts

• Time to find the tools.

Task Number of Persons Task Hours Elapsed Hours

Prepare For Oxygen 1 0.20 0.20

System Maintenance

Open Access 1 0.50 0.50

FIGURE 1 1 1.00 1.00

FIGURE 2 1 1.00 1.00

FIGURE 3 1 0.80 0.80

Coupler Assembly 1 0.80 0.80

Installation

Oxygen System Low 1 1.00 1.00

Pressure Leak Test

Oxygen System Alter- 1 0.50 0.50

nate (Electrical) Actuation Test

FIGURE 4 1 1.00 1.00

FIGURE 5 1 1.00 1.00

Close Access 1 0.20 0.20

TOTAL FOR EACH AIRPLANE 8.00 8.00

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Boeing Service Related Problem (SRP) 747-8-SRP-35-0056

b. Service Bulletin Index D6-30300

c. Standard Overhaul Practices Manual (SOPM) 20-50-01

d. 747 Fleet Team Digest (FTD) 35-14001

e. 747-8 Aircraft Maintenance Manual (AMM) 25-28-01, 35-00-00, 35-21-00, 35-41-00

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BOEING SERVICE BULLETIN 747-35-2132
2. Data Supplied with this Service Bulletin:

None.

3. Installation Drawings Used in the Preparation of this Service Bulletin:

Drawing Number Title

413U1120 STOWAGE BIN INSTALLATION - OUTBOARD OVERHEAD

413U1122 SUPPORT ASSY ZONE B-E OUTBOARD OVERHEAD STOWAGE

The table above lists applicable drawings used to prepare this service bulletin. The drawings are

not necessary to make the specified changes, and are not supplied with this service bulletin. The

drawings may not be applicable to all airplane configurations or operators.

K. Publications Affected

1. Publications:

Publication Chapter-Section

747 Illustrated Parts Catalog 35-21

2. Damage Tolerance Based Structural Inspections:

Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue

Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the

Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary.

L. Interchangeability and Intermixability of Parts

Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.

M. Software Accomplishment Summary

Not affected.

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BLANK PAGE
2. MATERIAL INFORMATION

A. Material - Price and Availability

Boeing can supply the kit shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators are

encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The

kit is subject to the terms and conditions of the Boeing standard purchase order acknowledgment.

Prices are in United States Dollars. Terms: Net 30 days.

Reference this service bulletin and submit your purchase order by one of these methods:

1. Order on-line via ATA Spec 2000 or The Boeing PART Page

2. Fax to (206) 662-7145

REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER

AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION

Unit Price as of

the original issue

date of this Service Bulletin (US

Dollars)

ROLT as of the

original issue

date of this Service Bulletin (Calendar Days)

Kit Number Name Date QTY

TOP KIT, RETROFIT - July 08, 2015 10 232 6,888.00

MAIN DECK PASSENGER COMPARTMENT

OXYGEN TUBING

CHANGE

015U2137-1

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.

B. Industry Support Information

Boeing warranty remedies are available for 747 airplanes in warranty as of April 18, 2014. For inspection

labor task hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing

Fleet Support Contracts - Warranty. If the condition described in this service bulletin is found during

the inspection for airplanes in warranty as of that date and additional task hours and kits, parts, and/or

special tools are required, send a warranty claim to Boeing Fleet Support Contracts - Warranty. Please

refer to this service bulletin number and reference the airplane variable numbers in your purchase

order. The warranty remedies will expire eight years from the original issue date of this service bulletin.

C. Parts Necessary for Each Airplane

1. Kits/Parts

To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability.

NOTE: One top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by

the Operator, are necessary for each airplane.

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BOEING SERVICE BULLETIN 747-35-2132
Kit 015U2137

Existing Part Notes

Number

New Part Number QTY Name

-1

TOP KIT,

RETROFIT - MAIN

DECK PASSENGER COMPARTMENT OXYGEN

TUBING CHANGE

015U2137-1 -

474W2090-10 16 COUPLER ASSY (a) (b)

474W2090-20 16 SLEEVE ASSY (a) (b)

474W2090-30 32 O-RING ASSY (a) (b)

(a) This part is used in production.

(b) The quantity given is the maximum needed for this change.

2. Parts and Materials Supplied by the Operator

None.

3. Parts Modified and Reidentified

None.

4. Parts Removed and Not Replaced

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

F. Special Tooling Necessary to do this Service 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.

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BOEING SERVICE BULLETIN 747-35-2132
3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

NOTE: 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for

definition of the acronyms.

2. Obey all of the warnings and cautions given in the specified manual sections.

3. Unless shown differently, these dimensions and tolerances are used:

– Linear dimensions are in inches

– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus

or minus 0.03 inch

– Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch

– Angular tolerance is plus or minus 2 degrees

– Hole dimensions for standard solid rivets and fasteners are in Structural Repair

Manual (SRM) Chapter 51

– Torque Values:

— Values for structural fasteners are given in 747-8 Structural Repair Manual,

Chapter 51.

4. If the length of any fastener specified in this service bulletin does not meet installation

standards given in SRM Chapter 51, then a fastener of the same specification, or

an approved substitute, with a length which meets the installation standards given

in SRM Chapter 51 may be used. In addition, washers may be installed for fastener

grip length in accordance with SRM Chapter 51. Refer to SOPM 20-50-01 for alternate

full threaded fasteners (screws) needed for installation in this service bulletin.

5. A General Visual Inspection is defined as: A visual examination of an interior or

exterior area, installation or assembly to detect obvious damage, failure or irregularity.

This level of inspection is made from within touching distance unless otherwise

specified. A mirror may be necessary to enhance visual access to all exposed surfaces

in the inspection area. This level of inspection is made under normally available

lighting conditions such as daylight, hangar lighting, flashlight or drop-light and may

require removal or opening of access panels or doors. Stands, ladders or platforms

may be required to gain proximity to the area being checked.

6. These work instructions refer to procedures included in other Boeing documents.

When the words "refer to" are used and the operator has an accepted alternative

procedure, the accepted alternative procedure can be used. When the words "in

accordance with" are included in the instruction, the procedure in the Boeing document

must be used.

7. Refer to APPENDIX A for logic diagram. Logic diagrams are provided as an aid only.

Information contained in Paragraph 1.E., Compliance is the primary source for

compliance times. Information in Paragraph 3.B., Work Instructions is the primary

source for tasks required for compliance.

8. If it is necessary to remove more parts for access, you can remove those parts. If

you can get access without removing identified parts, it is not necessary to remove

all of the identified parts. Jacking and shoring limitations must be observed.

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BOEING SERVICE BULLETIN 747-35-2132
9. Where the work instructions include installation of a kept part, a new or serviceable

part with the same part number can be installed as an alternative to the kept part.

10. This service bulletin includes functional test procedures for the systems changed by

this service bulletin. More functional tests can possibly be necessary in accordance

with standard maintenance practices because of interruption to other airplane systems.

11. Use of colors in Figures is based on guidance from the ATA e-Business Program

(ATA) iSpec 2200.

12. When more than one OPTION is given for a CONDITION, do only one of the OPTION

numbers. When more than one ACTION is given for a CONDITION number or an

OPTION number, do all of the ACTION numbers for that CONDITION number or

OPTION number.

13. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS

are in Paragraph 1.E., Compliance.

14. The CONDITIONS, ACTIONS and OPTIONS shown apply to each location

independently.

15. Some steps in the Work Instructions are identified as Required for Compliance (RC).

If this service bulletin is mandated by an Airworthiness Directive (AD), then the steps

identified as RC and steps indented under an RC step must be done to comply with

the AD. Alternative procedures for steps not identified with RC can be used if the

RC steps and indented steps can still be done as specified, and the airplane can be

put back in a serviceable condition. An Alternative Method of Compliance (AMOC)

is not necessary for deviations to steps that are not identified as RC.

B. WORK INSTRUCTIONS

WARNING: MAKE SURE THAT THE OXYGEN SYSTEM IS DEACTIVATED AND ALL OXYGEN

CYLINDERS ARE FULLY CLOSED. IF THE OXYGEN SYSTEM IS NOT DEACTIVATED

AND ALL THE OXYGEN CYLINDERS ARE NOT FULLY CLOSED, THE OXYGEN

SYSTEM MAY BE PRESSURIZED. IF WORK IS DONE ON A PRESSURIZED OXYGEN

SYSTEM, INJURY TO PERSONNEL AND / OR DAMAGE TO EQUIPMENT CAN OCCUR.

WARNING: OPEN EXPOSURE OF THE OXYGEN SYSTEM MUST BE KEPT TO A MINIMUM TO

PROTECT THE INTEGRITY OF THE OXYGEN SYSTEM. OPEN EXPOSURE TIME IS

NOT TO BE MORE THAN 5 MINUTES. COVER AND SEAL OPEN LINES WITH A

SUFFICIENT PLASTIC BAG, CAP OR PLUG TO PREVENT CONTAMINATION.

CONTAMINATION CAN CAUSE A FIRE OR EXPLOSION IN AN OXYGEN SYSTEM

WHICH MAY CAUSE INJURIES TO PERSONNEL AND DAMAGE TO EQUIPMENT.

RETURN ANY CONTAMINATED EQUIPMENT TO VENDOR.

CAUTION: OXYGEN SYSTEM COMPONENTS REQUIRE SPECIAL CARE AND HANDLING

PROCEDURES. BEFORE WORK IS DONE ON THE OXYGEN SYSTEM, REVIEW THE

SAFETY AND MAINTENANCE PROCEDURES GIVEN IN 747-8 AMM 35-00-00 PRIOR

TO MODIFYING THE OXYGEN SYSTEM.

1. Prepare for oxygen system maintenance. Read and obey the gaseous oxygen safety precautions

and general instructions before you do the following tasks, refer to 747-8 AMM 35-00-00.

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BOEING SERVICE BULLETIN 747-35-2132
WARNING: CLOSE THE SHUTOFF VALVE SLOWLY. IF THE VALVES ARE CLOSED QUICKLY,

THE TEMPERATURE OF THE OXYGEN CAN INCREASE. THIS CAN START AN

IGNITION WITH THE OXYGEN AND CAN CAUSE INJURY TO PERSONS AND DAMAGE

TO THE EQUIPMENT.

2. Close the shutoff valve on the passenger oxygen cylinders. Refer to 747-8 AMM 35-41-00 as an

accepted procedure.

3. Get access to the main deck passenger compartment.

4. Remove and keep eight identified, left side, outboard stowage bin assemblies (stowage bin bucket)

in accordance with FIGURE 1.

5. Remove and keep eight identified, right side, outboard stowage bin assemblies (stowage bin

bucket) in accordance with FIGURE 2.

6. RC - At sixteen locations, open the coupler assemblies on the oxygen tubes and do a general

visual inspection to identify if all oxygen components are installed, in accordance with FIGURE 3.

NOTE: The oxygen components for this inspection are two 'o'-rings, part number 474W2090-30,

sleeve assembly, part number 474W2090-20, and coupler assembly, part number

474W2090-10.

a. CONDITION 1: ALL OXYGEN COMPONENTS INSTALLED.

(1) Install new 'o'-rings, part number 474W2090-30, and close the oxygen tubing coupler

assembly. Refer to 747-8 AMM 35-00-00 (Low Pressure Hose - Coupling Assembly) as

an accepted procedure.

NOTE: It is optional to install a new coupler assembly, part number 474W2090-10, and

a new sleeve assembly, part number 474W2090-20, if these oxygen components

are found installed.

b. CONDITION 2: ANY OXYGEN COMPONENTS NOT INSTALLED.

(1) Install new 'o'-rings, part number 474W2090-30. Install new oxygen components (sleeve

assembly, part number 474W2090-20, or coupler assembly, part number 474W2090-10)

that are found missing. Refer to 747-8 AMM 35-00-00 (Low Pressure Hose - Coupling

Assembly) as an accepted procedure.

NOTE: It is optional to install a new coupler assembly, part number 474W2090-10, and

a new sleeve assembly, part number 474W2090-20, if these oxygen components

are found installed.

WARNING: OPEN THE SHUTOFF VALVE SLOWLY. IF THE VALVES ARE OPENED QUICKLY,

THE TEMPERATURE OF THE OXYGEN CAN INCREASE. THIS CAN START AN

IGNITION WITH THE OXYGEN AND CAN CAUSE INJURY TO PERSONS AND DAMAGE

TO THE EQUIPMENT.

7. Open the shutoff valve on the passenger oxygen cylinders. Refer to 747-8 AMM 35-41-00 as an

accepted procedure.

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BOEING SERVICE BULLETIN 747-35-2132
8. Do an oxygen system low pressure leak test. Refer to 747-8 AMM 35-21-00 as an accepted

procedure.

9. Do an oxygen system alternate (electrical) actuation test. Refer to 747-8 AMM 35-21-00 as an

accepted procedure.

10. Install the kept, left side, outboard stowage bin assemblies (stowage bin bucket) in accordance

with FIGURE 4.

11. Install the kept, right side, outboard stowage bin assemblies (stowage bin bucket) in accordance

with FIGURE 5.

12. Put the airplane back to a serviceable condition.

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BOEING SERVICE BULLETIN 747-35-2132
FIGURE 1: PASSENGER COMPARTMENT, LEFT SIDE, STOWAGE BIN BUCKET REMOVAL

(SHEET 1 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.

Step Task Name Identification Qty More Data

Stowage bin bucket.

Refer to 747-8 AMM

25-28-01 as an accepted procedure.

See table below for

more information on

bin assembly locations.

OUTBOARD BIN ASSY 413U1127-501 8

50 INCH

1 Remove / Keep

Left Side Stowage Bin Location

Support Assembly

Outboard Stowage

Bin Assembly

413U1127-501 413U1122-543B STA 690 - STA 740

413U1127-501 413U1122-543B STA 740+100 - STA 740+150

413U1127-501 413U1122-543B STA 1070 - STA 1120

413U1127-501 413U1122-543B STA 1170 - STA 1220

413U1127-501 413U1122-543B STA 1420 - STA 1470

413U1127-501 413U1122-543B STA 1510 - STA 1560

413U1127-501 413U1122-543B STA 1820 - STA 1870

413U1127-501 413U1122-543B STA 2120 - STA 2170

FIGURE 1: PASSENGER COMPARTMENT, LEFT SIDE, STOWAGE BIN BUCKET REMOVAL

(SHEET 2 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
FIGURE 2: PASSENGER COMPARTMENT, RIGHT SIDE, STOWAGE BIN BUCKET REMOVAL

(SHEET 1 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.

Step Task Name Identification Qty More Data

Stowage bin bucket.

Refer to 747-8 AMM

25-28-01 as an accepted procedure.

See table below for

more information on

bin assembly locations.

OUTBOARD BIN ASSY 413U1127-501 8

50 INCH

1 Remove / Keep

Right Side Stowage Bin Location

Support Assembly

Outboard Stowage

Bin Assembly

413U1127-501 413U1122-544B STA 690 - STA 740

413U1127-501 413U1122-544B STA 740+100 - STA 740+150

413U1127-501 413U1122-544B STA 1070 - STA 1120

413U1127-501 413U1122-544B STA 1170 - STA 1220

413U1127-501 413U1122-544B STA 1420 - STA 1470

413U1127-501 413U1122-544B STA 1510 - STA 1560

413U1127-501 413U1122-544B STA 1820 - STA 1870

413U1127-501 413U1122-544B STA 2120 - STA 2170

FIGURE 2: PASSENGER COMPARTMENT, RIGHT SIDE, STOWAGE BIN BUCKET REMOVAL

(SHEET 2 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
FIGURE 3: OXYGEN TUBE COUPLER ASSEMBLY - GENERAL VISUAL INSPECTION

(SHEET 1 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.

Step Task Name Identification Qty More Data

1 Open COUPLER ASSY 474W2090-10 16 If installed.

Do a general visual

inspection to identify

if a all oxygen components are installed.

2 Inspect OXYGEN TUBE - -

(a) The oxygen components for this inspection are two 'o'-rings, part number 474W2090-30, sleeve assembly,

part number 474W2090-20, and coupler assembly, part number 474W2090-10.

FIGURE 3: OXYGEN TUBE COUPLER ASSEMBLY - GENERAL VISUAL INSPECTION

(SHEET 2 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
FIGURE 4: PASSENGER COMPARTMENT, LEFT SIDE, STOWAGE BIN BUCKET INSTALLATION

(SHEET 1 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.

Step Task Name Identification Qty More Data

Stowage bin bucket.

Refer to 747-8 AMM

25-28-01 as an accepted procedure.

See table below for

more information on

bin assembly locations.

OUTBOARD BIN ASSY 413U1127-501 8

50 INCH

1 Install (Kept)

Left Side Stowage Bin Location

Support Assembly

Outboard Stowage

Bin Assembly

413U1127-501 413U1122-543B STA 690 - STA 740

413U1127-501 413U1122-543B STA 740+100 - STA 740+150

413U1127-501 413U1122-543B STA 1070 - STA 1120

413U1127-501 413U1122-543B STA 1170 - STA 1220

413U1127-501 413U1122-543B STA 1420 - STA 1470

413U1127-501 413U1122-543B STA 1510 - STA 1560

413U1127-501 413U1122-543B STA 1820 - STA 1870

413U1127-501 413U1122-543B STA 2120 - STA 2170

FIGURE 4: PASSENGER COMPARTMENT, LEFT SIDE, STOWAGE BIN BUCKET INSTALLATION

(SHEET 2 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
FIGURE 5: PASSENGER COMPARTMENT, RIGHT SIDE, STOWAGE BIN BUCKET INSTALLATION

(SHEET 1 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.

Step Task Name Identification Qty More Data

Stowage bin bucket.

Refer to 747-8 AMM

25-28-01 as an accepted procedure.

See table below for

more information on

bin assembly locations.

OUTBOARD BIN ASSY 413U1127-501 8

50 INCH

1 Install (Kept)

Right Side Stowage Bin Location

Support Assembly

Outboard Stowage

Bin Assembly

413U1127-501 413U1122-544B STA 690 - STA 740

413U1127-501 413U1122-544B STA 740+100 - STA 740+150

413U1127-501 413U1122-544B STA 1070 - STA 1120

413U1127-501 413U1122-544B STA 1170 - STA 1220

413U1127-501 413U1122-544B STA 1420 - STA 1470

413U1127-501 413U1122-544B STA 1510 - STA 1560

413U1127-501 413U1122-544B STA 1820 - STA 1870

413U1127-501 413U1122-544B STA 2120 - STA 2170

FIGURE 5: PASSENGER COMPARTMENT, RIGHT SIDE, STOWAGE BIN BUCKET INSTALLATION

(SHEET 2 OF 2)

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BOEING SERVICE BULLETIN 747-35-2132
Logic diagrams are provided as an aid only. Information contained in Paragraph 1.E., Compliance is the primary

source for compliance times. Information contained in Paragraph 3.B., Work Instructions is the primary source

for tasks required for compliance.

1. The table below gives the description for the parts and conditions called out in the logic diagrams.

Title Description

DO A GENERAL VISUAL INSPECTION THE PASSENGER OXYGEN TUBING

SYSTEM ATTACHED TO THE OUTBOARD STOWAGE BIN SUPPORT

ASSEMBLIES TO IDENTIFY IF OXYGEN COMPONENTS ARE INSTALLED.

INSPECT

CONDITION 1 ALL OXYGEN COMPONENTS INSTALLED.

CONDITION 2 ANY OXYGEN COMPONENTS NOT INSTALLED.

APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 1: PASSENGER OXYGEN

SYSTEM - OXYGEN TUBING ATTACHED TO THE OUTBOARD STOWAGE BIN SUPPORT ASSEMBLIES

- INSPECTION AND INSTALLATION

(SHEET 1 OF 1)

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BOEING SERVICE BULLETIN 747-35-2132
APPENDIX B: PART DEMAND INTENT

(SHEET 1 OF 1)

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BOEING SERVICE BULLETIN 747-35-2132