Boeing ASB 777-35A0029: Revision 1, text

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Commercial Airplanes 777 Service Bulletin ALERT Number: 777-35A0029 Original Issue: June 06, 2012 Revision 1: April 29, 2013 ATA System: 3523 SUBJECT: OXYGEN - Supernumerary Oxygen System - Pressurized Oxygen System Low Pressure Oxygen Hose Replacement 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:

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: June 06, 2012 777-35A0029Revision 1: April 29, 2013 1 of 29

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Original Issue: June 06, 2012 777-35A0029Revision 1: April 29, 2013 2 of 29 BOEING SERVICE BULLETIN 777-35A0029

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Table of Contents

Revision Transmittal Sheet5

Summary7

1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1

1. Airplanes ............................................ 1 1

2. Spares Affected ........................................ 1 2 B. Concurrent Requirements ...................................... 1 2 C. Reason ................................................ 1 2 D. Description .............................................. 1 2 E. Compliance .............................................. 1 2 F. Approval ............................................... 1 3 G. Manpower .............................................. 1 3 H. Weight and Balance Changes .................................... 1 3 I. Electrical Load Data ......................................... 1 3 J. References .............................................. 1 4

1. Existing Data: ......................................... 1 4

2. Data Supplied with this Service Bulletin: ........................... 1 4

3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 1 4 K. Publications Affected ........................................ 1 4 L. Interchangeability and Intermixability of Parts ........................... 1 4 M. Software Accomplishment Summary ................................ 1 4

2. MATERIAL INFORMATION ........................................ 1 5 A. Material - Price and Availability ................................... 1 5 B. Industry Support Information .................................... 1 5 C. Parts Necessary for Each Airplane ................................. 1 5

1. Kits/Parts ............................................ 1 5

2. Parts and Materials Supplied by the Operator ........................ 1 6

3. Parts Modified and Reidentified ................................ 1 6

4. Parts Removed and Not Replaced .............................. 1 6 D. Parts Necessary to Change Spares ................................. 1 6 E. Special Tooling - Price and Availability ............................... 1 6 F. Special Tooling Necessary to do this Service Bulletin ....................... 1 7

3. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 9 A. GENERAL INFORMATION ..................................... 1 9 B. WORK INSTRUCTIONS ....................................... 2 0 FIGURE 1: STOWAGE BOX LOW PRESSURE OXYGEN HOSE REPLACEMENTS ......... 2 1 FIGURE 2: LOW PRESSURE OXYGEN HOSE REPLACEMENTS ................... 2 4 FIGURE 3: SUPERNUMERARY INTERIOR RESTORATION ...................... 2 7 APPENDIX A: OXYGEN HOSE TO STOWAGE BOX INSTALLATION ................... 2 9 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: June 06, 2012 777-35A0029Revision 1: April 29, 2013 3 of 29 BOEING SERVICE BULLETIN 777-35A0029

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Commercial Airplanes 777 Service Bulletin ALERT Revision Transmittal SheetNumber: 777-35A0029Original Issue: June 06, 2012 Revision 1: April 29, 2013 ATA System: 3523 SUBJECT: OXYGEN - Supernumerary Oxygen System - Pressurized Oxygen System Low Pressure Oxygen Hose Replacement This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION 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.

More work is necessary on the airplane(s) changed in accordance with the original issue of this service bulletin which did not remove low pressure oxygen hoses 57034-08A050140 and did not install non-conductive low pressure oxygen hoses 57034-33N040140. These airplanes must replace the low pressure oxygen hose assemblies in accordance with Figure 1.

No more work is necessary on the airplane(s) changed in accordance with the original issue of this service bulletin if low pressure oxygen hoses 57034-08A050140 were removed and non-conductive low pressure oxygen hoses 57034-33N040140 were installed.

REASON FOR REVISION This revision is sent to correct the reference to the part numbers of the low pressure oxygen hoses in Figure 1.

These sections were changed:

1. Summary, Compliance, Added possible AD paragraph.

2. Paragraph 1.E., Compliance, Added possible AD paragraph.

3. Paragraph 1.K., Publications Affected, Added publications.

4. Figure 1, Changed step table.

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.

Original Issue: June 06, 2012 777-35A0029Revision 1: April 29, 2013 5 of 29

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REVISION HISTORY June 06, 2012Original Issue:

April 29, 2013Revision 1:

Original Issue: June 06, 2012 777-35A0029Revision 1: April 29, 2013 6 of 29 BOEING SERVICE BULLETIN 777-35A0029

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Commercial Airplanes 777 Service Bulletin ALERT SummaryNumber: 777-35A0029Original Issue: June 06, 2012 Revision 1: April 29, 2013 ATA System: 3523 SUBJECT: OXYGEN - Supernumerary Oxygen System - Pressurized Oxygen System Low Pressure Oxygen Hose Replacement

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 The changes provided in this service bulletin will help prevent damage to the low pressure oxygen hoses that may be subjected to electrical current. An electrical current condition in the low pressure oxygen hose can cause the low pressure oxygen hose to melt or burn. This could result in smoke and/or fire in the supernumerary area.

This service bulletin will replace low pressure oxygen hoses with non-conductive low pressure oxygen hoses located in the supernumerary area. The replacement of the low pressure oxygen hoses will prevent electrical current from passing through the low pressure oxygen hose internal anti-collapse spring which can cause the low pressure oxygen hose to melt or burn.

Boeing Service Related Problem (SRP) 777-SRP-35-0050 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 777 FTD 35-11003 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 Paragraph 1.E., Compliance and Paragraph

1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight and Balance Change Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

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ReferenceAffectedPlanning Data 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 NoOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION Remove the stowage boxes for the oxygen masks. Remove ceiling panels. Replace the existing low pressure oxygen hoses with the new non-conductive low pressure oxygen hoses. Perform a leak test.

EFFECTIVITY 777F Airplanes with pressurized supernumerary oxygen systems. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.

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.

Boeing recommends that the change given in this service bulletin be done within 36 months after the original issue date of this service bulletin.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of September 30, 2011. Please refer to Paragraph 2.B., Industry Support Information.

MANPOWER Elapsed HoursTotal Task HoursAirplanes

6.606.60TOTAL FOR

EACH AIR- PLANE

MATERIAL INFORMATION Boeing Supplied Kits/Parts.

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

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BOEING SERVICE BULLETIN 777-35A0029

ALERT ALERT -REMOVE CEILING PANELS -REPLACE THE EXISTING LOW

PRESSURE OXYGEN HOSES -REMOVE THE STOWAGE BOXES FOR THE FWD

OXYGEN MASKS -REPLACE THE EXISTING LOW PRESSURE

OXYGEN HOSES WITH THE NEW NON-CONDUCTIVE

LOW PRESSURE OXYGEN HOSES -PERFORM A LEAK TEST.

WITH THE NEW NON-CONDUCTIVE LOW PRESSURE OXYGEN HOSES.

-PERFORM A LEAK TEST.

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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 Document D624T001 Part 3 for Airplane Variable Number, LineNumber, and Serial Number data.

This service bulletin is for the airplane(s) shown below.

DESCRIPTIONCONFIGURATIONGROUP 777F airplanes with pressurized supernumerary oxygen systems.-1 777F airplanes which have incorporated service bulletin 777-35-0025.-2 Airplane Models:

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2. Spares Affected None.

B. Concurrent Requirements None.

C. Reason The changes provided in this service bulletin will help prevent damage to the low pressure oxygen hoses that may be subjected to electrical current. An electrical current condition in the low pressure oxygen hose can cause the low pressure oxygen hose to melt or burn. This could result in smoke and/or fire in the supernumerary area.

Revision 01 is sent to correct the reference to the part numbers of the low pressure oxygen hoses in Figure 1.

Boeing Service Related Problem (SRP) 777-SRP-35-0050 is related to this service bulletin.

D. Description Remove the stowage boxes for the oxygen masks. Remove ceiling panels. Replace the existing low pressure oxygen hoses with the new non-conductive low pressure oxygen hoses. Perform a leak test.

Revision 01 - More work is necessary on the airplane(s) changed in accordance with the original issue of this service bulletin which did not remove low pressure oxygen hoses 57034-08A050140 and did not install non-conductive low pressure oxygen hoses 57034-33N040140. These airplanes must replace the low pressure oxygen hose assemblies in accordance with Figure 1. No more work is necessary on the airplane(s) changed in accordance with the original issue of this service bulletin if low pressure oxygen hoses 57034-08A050140 were removed and non-conductive low pressure oxygen hoses 57034-33N040140 were installed.

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

Affected Maintenance Zones ZoneModel 215, 216777F 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.

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