August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 22 

### Commercial Airplane Group 

# 777

SPECIAL ATTENTION 

# Service Bulletin

Number: 777-29-0032 Date: August 09, 2007 ATA System: 2911 SUBJECT: HYDRAULIC POWER - Main Hydraulic Systems - Nose Landing Gear Alternate Extension Hydraulic Tube - Change 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2007 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, BOEING BUSINESS JET, DC-8, DC-9, DC-10, MD-10, MD-11, MD-80, MD-90, the Boeing logo and the Boeing livery are among the trademarks owned by Boeing or its subsidiaries. No intellectual property license (express or implied) is granted in connection with this document or otherwise.BLANK PAGE August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

BLANK PAGETable of Contents August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

Table of Contents Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 16 3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 16 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 16 2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 17 3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 18 3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 FIGURE 1: Main Equipment Center - Hydraulic Tube - Access and Change . . . . . . . . . . . . . . 20Table of Contents August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 4 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

BLANK PAGEAugust 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5 of 22 

### Commercial Airplane Group 

# 777

SPECIAL ATTENTION 

# Service Bulletin

Number: 777-29-0032 

### Summary Date: August 09, 2007 ATA System: 2911 SUBJECT: HYDRAULIC POWER - Main Hydraulic Systems - Nose Landing Gear Alternate Extension Hydraulic Tube - Change

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. CONCURRENT REQUIREMENTS
None. BACKGROUND This change prevents damage to the subject hydraulic tube and possible fire caused by arcing of an external power connector in the P30 panel. If this service bulletin is not accomplished, there is a risk of fire and personal injury during ground operations if hydraulic fluid contacts an external power connector after arcing occurs. An operator reported a fire in the main equipment center after the maintenance crew connected external power.The cause of the fire was traced to a failure of an external power connector in the P30 panel, which caused hightemperature arcing and splatter of molten copper on an adjacent hydraulic tube. The molten copper splatter created a hole in the tube, and hydraulic fluid sprayed into the power connector and caught on fire. At the time of the fire, the airplane was at the gate and passengers were deplaning. The fire department responded to the fire and extinguished it. Five firemen were taken to the hospital because of fume inhalation. There were no injuries to the passengers, flight crew, or ground crew. Boeing Service Related Problem (SRP) 777-SRP-24-0120 is related to this service bulletin. ACTION (PRR 62777-46S) In the main equipment center, wrap self-fusing fire resistant silicone tape around the section of the nose landing gear alternate extension hydraulic tube that is adjacent to the P30 panel. EFFECTIVITY 777-200/-200LR/-300/-300ER airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 6 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

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 this service bulletin be done within 36 months from the date on this service bulletin. INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin. MANPOWER

MATERIAL INFORMATION Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability. Airplanes Total Task Hours Elapsed Hours All 2.00 2.00August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

P30 EXTERNAL POWER PANEL RIGHT POWER MANAGEMENT PANEL, P210

WRAP SILICONE TAPE AROUND HYDRAULIC TUBE E4 RACK

MAIN EQUIPMENT CENTER (RACKS E3, E4) SEE A

FWD



### A

FWDU83746August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 8 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

BLANK PAGEAugust 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 22 

### Commercial Airplane Group 

# 777

SPECIAL ATTENTION 

# Service Bulletin

Number: 777-29-0032 Date: August 09, 2007 ATA System: 2911 SUBJECT: HYDRAULIC POWER - Main Hydraulic Systems - Nose Landing Gear Alternate Extension Hydraulic Tube - Change

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. 1. PLANNING INFORMATION A. Effectivity 1. Airplanes Refer to Service Bulletin Index Document D624W001 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 62777-46S for data about this change.

Airplane models: 777-200 777-200LR 777-300 777-300ER IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER AEROMEXICO (AMX) 1 WB341 WC521–WC522 AIR AUSTRAL (AUX) 1 WB366–WB368 AIR CHINA (BEJ) 1 WA241–WA250 AIR FRANCE (AFA) 1 WB311–WB335 WD521–WD533 WD546–WD549 GROUP CONFIGURATION DESCRIPTION 1 - All affected airplanesAugust 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 10 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

AIR INDIA (AIN) 1 WA007 WB058–WB059 WB070 AIR NEW ZEALAND (ANZ) 1 WC486–WC491 ALITALIA (ALI) 1 WC281–WC290 ALL NIPPON AIRWAYS (ANA) 1 WA131–WA137 WA221–WA223 WA231–WA232 WA301–WA304 WB481–WB484 WB531–WB537 WC506–WC508 WD561–WD565 AMERICAN AIRLINES (AAL) 1 WB416–WB439 WC051–WC073 ASIANA AIRLINES (AAR) 1 WC111–WC117 AUSTRIAN (AUL) 1 WB271–WB273 BOEING AIRCRAFT TRADING (BTU) 1 WA079–WA080 BRITISH AIRWAYS (BAB) 1 WA076–WA078 WB001–WB021 WB031–WB046 WB411–WB413 CATHAY PACIFIC AIRWAYS (CAT) 1 WA001 WA101–WA104 WB501–WB512 CHINA SOUTHERN AIRLINES (GUN) 1 WA116–WA119 WB121–WB125 WC441 CONTINENTAL AIRLINES (CAL) 1 WB371–WB388 DELTA AIR LINES (DAL) 1 WB446–WB453 EGYPTAIR (EGP) 1 WB151–WB155 EL AL ISRAEL AIRLINES (ELA) 1 WC101–WC104 EMIRATES (EAD) 1 WA196–WA198 WB101–WB106 WB631–WB638 WB646–WB649 WD581–WD589 WD606–WD608 WD621–WD627 ETIHAD AIRWAYS (ETI) 1 WD671–WD675August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

EVA AIR (EVA) 1 WD651–WD653 ILFC (ILF) 1 WB342 JAL DOMESTIC (JAS) 1 WA206–WA212 JAL INTERNATIONAL (JAL) 1 WA171–WA175 WA281–WA282 WB591–WB597 WC241–WC243 WC301–WC308 WD501–WD506 KENYA AIRWAYS (KEN) 1 WC456–WC458 KLM - ROYAL DUTCH AIRLINES (KLM) 1 WC381–WC393 KOREAN AIR (KAL) 1 WB131–WB142 WB551–WB554 KUWAIT AIRWAYS (KUW) 1 WB306–WB307 MALAYSIA AIRLINES (MAS) 1 WB161–WB177 MID EAST JET (SKL) 1 WB406 PAKISTAN INT'L AIRLINES (PIA) 1 WC446–WC448 WD001–WD002 SAUDI ARABIAN AIRLINES (SVA) 1 WB276–WB286 WB291–WB302 SAUDI OGER (SAO) 1 WB476 SINGAPORE AIRLINES (SIA) 1 WB181–WB194 WB201–WB215 WB231–WB247 WB611–WB622 TAAG (ANGOLA AIRLINES) (ANG) 1 WC546 THAI AIRWAYS INTERNATIONAL (TII) 1 WA086–WA093 WB601–WB606 UNITED AIRLINES (UAL) 1 WA002–WA006 WA009–WA010 WA012–WA017 WA261–WA266 WB051–WB057 WB060–WB069 WB071 WB074–WB088August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 12 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

VARIG AIRLINES (VAR) 1 WA008 WA011 WB072–WB073 VIETNAM AIRLINES (VIE) 1 WB336–WB337 WC361–WC364 WC371–WC374 IDENTIFICATION BY VARIABLE NUMBER Variable Group WA001–WA017 1 WA076–WA080 1 WA086–WA093 1 WA101–WA104 1 WA116–WA119 1 WA131–WA137 1 WA171–WA175 1 WA196–WA198 1 WA206–WA212 1 WA221–WA223 1 WA231–WA232 1 WA241–WA250 1 WA261–WA266 1 WA281–WA282 1 WA301–WA304 1 WB001–WB021 1 WB031–WB046 1 WB051–WB088 1 WB101–WB106 1 WB121–WB125 1 WB131–WB142 1 WB151–WB155 1 WB161–WB177 1 WB181–WB194 1 WB201–WB215 1 WB231–WB247 1 WB271–WB273 1 WB276–WB286 1 WB291–WB302 1 WB306–WB307 1 WB311–WB337 1 WB341–WB342 1 WB366–WB368 1August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 13 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

WB371–WB388 1 WB406 1 WB411–WB413 1 WB416–WB439 1 WB446–WB453 1 WB476 1 WB481–WB484 1 WB501–WB512 1 WB531–WB537 1 WB551–WB554 1 WB591–WB597 1 WB601–WB606 1 WB611–WB622 1 WB631–WB638 1 WB646–WB649 1 WC051–WC073 1 WC101–WC104 1 WC111–WC117 1 WC241–WC243 1 WC281–WC290 1 WC301–WC308 1 WC361–WC364 1 WC371–WC374 1 WC381–WC393 1 WC441 1 WC446–WC448 1 WC456–WC458 1 WC486–WC491 1 WC506–WC508 1 WC521–WC522 1 WC546 1 WD001–WD002 1 WD501–WD506 1 WD521–WD533 1 WD546–WD549 1 WD561–WD565 1 WD581–WD589 1 WD606–WD608 1 Variable GroupAugust 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 14 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

2. Spares Affected
None. B. Concurrent Requirements
None. C. Reason This change prevents damage to the subject hydraulic tube and possible fire caused by arcing of an external power connector in the P30 panel. If this service bulletin is not accomplished, there is a risk of fire and personal injury during ground operations if hydraulic fluid contacts an external power connector after arcing occurs. An operator reported a fire in the main equipment center after the maintenance crew connected external power. The cause of the fire was traced to a failure of an external power connector in the P30 panel, which caused high-temperature arcing and splatter of molten copper on an adjacent hydraulic tube. The molten copper splatter created a hole in the tube, and hydraulic fluid sprayed into the power connector and caught on fire. At the time of the fire, the airplane was at the gate and passengers were deplaning. The fire department responded to the fire and extinguished it. Five firemen were taken to the hospital because of fume inhalation. There were no injuries to the passengers, flight crew, or ground crew. Boeing Service Related Problem (SRP) 777-SRP-24-0120 is related to this service bulletin. D. Description In the main equipment center, wrap self-fusing fire resistant silicone tape around the section of the nose landing gear alternate extension hydraulic tube that is adjacent to the P30 panel. 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. Boeing recommends that this service bulletin be done within 36 months from the date on this service bulletin. WD621–WD627 1 WD651–WD653 1 WD671–WD675 1 Variable GroupAugust 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 15 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

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 — Time to examine the work — Time to cure the materials — Time to make the parts — Time to find the tools.

H. Weight and Balance Changes
None. I. Electrical Load Data Not changed. J. References 1. Existing Data: a. Engineering Change Memo PRR 62777-46S b. 777 Aircraft Maintenance Manual (AMM) 24-22-00 c. Boeing Service Related Problem (SRP) 777-SRP-24-0120 d. Standard Overhaul Practices Manual (SOPM) 20-30-03, 20-50-10 Task Number of Persons Task-Hours Elapsed Hours Remove external power 1 0.50 0.50 Figure 1 1 1.50 1.50 TOTAL FOR EACH AIRPLANE 2.00 2.00August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 16 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

2. Data supplied with this Service Bulletin:
None. 3. Installation Drawings Used in the Preparation of this Service Bulletin:

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 Affected

L. Interchangeability and Intermixability of Parts Refer to Paragraph 2.C., Parts Necessary For Each Airplane, for interchangeability and intermixability information. Drawing Number Title 208W4149 Tubing Installation Cargo Floor Beams STA 332.5 - 652 272W4190 Tubing Installation - Hydraulic, Section 41

Publication Chapter-Section 777 Illustrated Parts Catalog 29-11August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 17 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

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/Parts:
None. 2. Parts and Materials Supplied by the Operator:

3. Parts Modified and Reidentified:

4. Parts Removed and Not Replaced: None. D. Parts Necessary to Change Spares
None. E. Special Tooling - Price and Availability
None. Part Number / Specification QTY Name Notes Scotch 70 7 ft. Electrical Tape, Self-Fusing, Silicone Rubber (a) (a) 3M Company (V76381) 3M Center St. Paul, Minnesota 55144-1000

Existing Part Number QTY Name New Part Number Notes 272W4190-93 1 Tube Assy - (a) (b) (c) 272W4190-168 1 Tube Assy - (a) (b) (c) (a) Make the change given in this service bulletin. (b) There is no equivalent Boeing part number for the changed part. Identify on the part that the change given in this service bulletin was made. (c) The equivalent production part number is 272W4190-192.August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 18 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

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.August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 19 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

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. These work instructions refer to procedures included on 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 "as given in" are included in the instruction, the procedure in the Boeing document must be used. B. WORK INSTRUCTIONS 1. Remove primary and secondary external power from the airplane. Refer to 777 AMM 24-22-00 as an accepted procedure. 2. Get access to and change the hydraulic tube as given in Figure 1. 3. Put the airplane back to a serviceable condition.FIGURE 1: Main Equipment Center - Hydraulic Tube - Access and Change August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 20 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

FIGURE 1: Main Equipment Center - Hydraulic Tube - Access and Change

E4 RACK

E2 RACK E4 RACK E2 RACK P210 RIGHT POWER MANAGEMENT PANEL

12 LOCATIONS

FWD



### A FWD

SEE A

B SEE 7 1

6 2U84492

(SHEET 1 OF 3)FIGURE 1: Main Equipment Center - Hydraulic Tube - Access and Change August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 21 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

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 this figure. STEP TASK NAME IDENTIFICATION QTY MORE DATA 1 Remove/Keep Fasteners - 12 2 Remove/Keep Floor Panel Assy 284W8165-14 1 3 Clean Hydraulic Tube 272W4190-93 or 272W4190-168 1 Solvent clean the area where the tape will be installed. Refer to SOPM 20-30-03 as an accepted procedure. 4 Install (New) Electrical Tape Scotch 70 - (a) PERMASWAGE FITTING 13.0 ± 0.5

0.5 MAXIMUM 5

3



### B 4

FWDU85500

(SHEET 2 OF 3)FIGURE 1: Main Equipment Center - Hydraulic Tube - Access and Change August 09, 2007 777-29-0032 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 22 of 22 

### BOEING SERVICE BULLETIN 777-29-0032

5 Apply Service Bulletin Number - - Apply the service bulletin number to the tube. Do not mark on the Scotch 70 tape. Refer to SOPM 20-50-10 as an accepted procedure. 6 Install (Kept) Floor Panel Assy 284W8165-14 1 7 Install (Kept) Fasteners - 12 (a) Wind a continuous length of tape from one end to the other and back again, for a total of two wraps. Make sure that each turn has an overlap of 67% or more. Keep the tension moderate and constant, and stretch the tape between 10 and 100%. Do not stretch the tape when you do the last turn. Push down on the ends of the tape to make sure they do not lift up before the tape fuses. STEP TASK NAME IDENTIFICATION QTY MORE DATA

(SHEET 3 OF 3)