### Commercial **Airplanes** 

# 767 Service Bulletin **Number: 767-28-0105** Original Issue: January 12, 2012 Revision 1: February 06, 2013 ATA System: 2811 **SUBJECT:** FUEL - Fuel Tanks - Access Door Inspection/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. 9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2012 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 Unpublished Work.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. Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, DreamlinerTM, BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, 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. BOEING is a trademark of Boeing Management Company.

Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 1 of 34 4.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 2 of 34 **BOEING SERVICE BULLETIN 767-28-0105**

BLANK PAGE**Table of Contents** Revision Transmittal Sheet............................................ 5 Summary...................................................... 7 1. PLANNING INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 A. Effectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1. Airplanes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2. Spares Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 C. Reason. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 D. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 H. Weight and Balance Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 I. Electrical Load Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 J. References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 1. Existing Data:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2. Data Supplied with this Service Bulletin:. . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3. Installation Drawings Used in the Preparation of this Service Bulletin:. . . . . . . . . . . 21 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 L. Interchangeability and Intermixability of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 21 M. Software Accomplishment Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2. MATERIAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 B. Industry Support Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 C. Parts Necessary for Each Airplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2. Parts and Materials Supplied by the Operator:. . . . . . . . . . . . . . . . . . . . . . . . 23 3. Parts Modified and Reidentified:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4. Parts Removed and Not Replaced:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 D. Parts Necessary to Change Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 F. Special Tooling Necessary to do this Service Bulletin. . . . . . . . . . . . . . . . . . . . . . . 23 3. ACCOMPLISHMENT INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 A. GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 B. WORK INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 FIGURE 1: ACCESS DOOR INSPECTION - LEFT WING. . . . . . . . . . . . . . . . . . . . . . . . 27 FIGURE 2: ACCESS DOOR INSPECTION - RIGHT WING. . . . . . . . . . . . . . . . . . . . . . . 29 APPENDIX A: PROCEDURE FOR ACCESS DOOR INSPECTION. . . . . . . . . . . . . . . . . . . . . 31

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 3 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 4 of 34 **BOEING SERVICE BULLETIN 767-28-0105**

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### Commercial **Airplanes** 

# 767 Service Bulletin **Revision Transmittal Sheet Number: 767-28-0105**  Original Issue: January 12, 2012 Revision 1: February 06, 2013 ATA System: 2811 **SUBJECT:** FUEL - Fuel Tanks - Access Door Inspection/Replacement This revision includes all pages of the service bulletin. **COMPLIANCE INFORMATION RELATED TO THIS REVISION** Airplanes VR268-VR284, VS924-VS928, VS941, VS951-VS954, VS961-VS969, VS971-VS977, VS981-VS982, VT001-VT006, VT544-VT545, VT551-VT552 were added to Group 2 of this service bulletin effectivity. No more work is necessary on the airplanes changed in accordance with the original issue of this service bulletin. **REASON FOR REVISION** This revision is sent to tell operators that the service bulletin effectivity was revised to add new airplanes to Group 2 of this service bulletin effectivity. Group 2 was added to the service bulletin Effectivity to include all the 767 airplanes delivered prior to the release of the Maintenance Planning Data (MPD) update containing Airworthiness Limitation (AWL) 57-AWL-01, which makes sure that Impact Resistant Access Doors are installed at the correct locations. Also, one stencil location dimension on the alternate configuration in Figure 1 and Figure 2 was corrected, and a footnote was added to allow for more flexibility for the stencil and marker locations. The General Visual Inspection Procedure in Appendix A, Option 1, has been updated to show that impact resistant access doors have flat ends. A compliance table was added to Paragraph 1.E., Compliance. In addition, the last step in the Work Instructions was corrected. These sections were changed: 1. Summary: Added Summary Evaluation Table. 2. Paragraph 1.A., Effectivity: Added VR268-VR284, VS924-VS928, VS941, VS951-VS954, VS961-VS969, VS971-VS977, VS981-VS982, VT001-VT006, VT544-VT545, VT551-VT552. 3. Paragraph 1.A., Effectivity: Created Group 2 for the new airplanes that were added. 4. Paragraph 1.E., Compliance: Added a compliance table. 5. Paragraph 2.B., Industry Support Information: Added a warranty statement for Group 2 airplanes. 6. Paragraph 3.B., Work Instructions, Step 10: Corrected instruction. 7. Figures 1 and 2: Corrected illustration. 8. Figures 1 and 2: Added a footnote to step table.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 5 of 349. Appendix A: Corrected illustration to show rounded edges on impact resistant access door. 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** January 12, 2012 Original Issue: February 06, 2013 Revision 1:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 6 of 34 **BOEING SERVICE BULLETIN 767-28-0105**

### Commercial **Airplanes** 

# 767 Service Bulletin **Summary Number: 767-28-0105**  Original Issue: January 12, 2012 Revision 1: February 06, 2013 ATA System: 2811 **SUBJECT:** FUEL - Fuel Tanks - Access Door Inspection/Replacement **CONCURRENT REQUIREMENTS** Refer to Paragraph 1.B., Concurrent Requirements. **BACKGROUND** This service bulletin provides instructions to inspect the Wing Fuel Tank Access Doors to make sure that Impact Resistant Access Doors are installed in the correct locations and stencils and index markers are applied. Fire can result from damage to a standard access door if it is located where an Impact Resistant Access Door is required. An operator identified a standard access door located where an Impact Resistant Access Door is required. In addition, the operator examined its spares stock and found that some Impact Resistant Access Doors were without stencils. These findings have raised a concern about the possibility of more standard access doors being installed at locations where Impact Resistant Access Doors are required. Impact Resistant Access Doors minimize risk of penetration from engine debris or objects thrown by airplane tires. By accomplishing the inspection in this service bulletin, operators can make sure that stencils and index markers are applied and Impact Resistant Access Doors are installed at the correct locations, providing increased resistance to Wing Fuel Tank penetration. Boeing Service Related Problem (SRP) 767-SRP-57-0225 is related to this service bulletin. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
**Reference Affected**  **Planning Data** Paragraph 1.A.2., Spares Affected No Spares Affected Paragraph 1.E., Compliance and Paragraph 1.F., Approval Yes AD Related Paragraph 1.H., Weight and Balance Changes No Weight and Balance Change Paragraph 1.I., Electrical Load Data No Electrical Load Changed Paragraph 1.K., Publications Affected No Publications Affected Paragraph 1.K., Publications Affected No Airplane Flight Operations Affected (Flight CrewOperations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/Parts No Kits/Parts Required

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 7 of 34**Reference Affected**  **Planning Data** Paragraph 2.C.2., Parts and Materials Supplied by the Operator Yes Operator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin No Special Tooling Required

**ACTION** Identify the Wing Fuel Tank Access Doors. Do a General Visual Inspection or an ultrasonic Non-Destructive Test (NDT) to make sure that Impact Resistant Access Doors are installed in the correct locations. If a standard access door is identified in a location where an Impact Resistant Access Door is required, replace the door with an Impact Resistant Access Door. Do a General Visual Inspection to make sure that stencils and index markers are applied. If a stencil and/or index marker is missing, apply new stencil and/or index marker. **EFFECTIVITY** 767-200/-300/-300F/-400ER Airplanes. Refer to Paragraph 1.A.1, Effectivity. **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** Refer to Paragraph 2.B., Industry Support Information. **MANPOWER** Refer to Paragraph 1.G., Manpower. **MATERIAL INFORMATION** Refer to Paragraph 2.A., Material - Price and Availability.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 8 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 9 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 10 of 34 **BOEING SERVICE BULLETIN 767-28-0105**

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### Commercial **Airplanes** 

# 767 Service Bulletin **Number: 767-28-0105** Original Issue: January 12, 2012 Revision 1: February 06, 2013 ATA System: 2811 **SUBJECT:** FUEL - Fuel Tanks - Access Door Inspection/Replacement **1. PLANNING INFORMATION A. Effectivity**  1. Airplanes Refer to Service Bulletin Index Document D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is for the airplanes shown below.
**DESCRIPTION CONFIGURATION**  **GROUP** 767-200/300/300F/400ER Airplanes, line numbers 1-717 and 719-984

- 1 767-300/300F Airplanes, line numbers 985-1039

- 2

Airplane Models: 767-200, 767-300, 767-300F, 767-400ER **Group Variable Number**  1 VA001 - VA020 1 VA301 - VA315 1 VA501 - VA530 1 VA701 - VA719 1 VA801 - VA810 1 VB001 - VB002 1 VB051 - VB055 1 VB101 - VB125 1 VB201 - VB202 1 VB251 - VB253

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 11 of 34**Group Variable Number**  1 VB281 - VB284 1 VB301 - VB302 1 VB321 - VB332 1 VB371 - VB373 1 VB401 1 VB441 - VB444 1 VE001 - VE003 1 VE021 - VE023 1 VE041 - VE043 1 VE061 - VE069 1 VE083 - VE086 1 VE101 - VE104 1 VE116 - VE118 1 VE121 - VE126 1 VE141 - VE152 1 VE171 - VE172 1 VF001 - VF002 1 VF041 - VF042 1 VF051 1 VF061 - VF062 1 VF071 - VF072 1 VF091 - VF093 1 VF101 - VF102 1 VF161 - VF162 1 VF171 - VF172 1 VF180 - VF184 1 VF251 1 VK001 - VK016 1 VK021 - VK022 1 VK031 - VK056 1 VK081 - VK113 1 VK131 - VK133 1 VK141 - VK148

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 12 of 34 **BOEING SERVICE BULLETIN 767-28-0105 Group**  **Variable Number** 1 VK161 - VK164 1 VK171 1 VK181 1 VK186 1 VL001 - VL006 1 VL011 1 VL701 - VL703 1 VL751 - VL755 1 VL806 - VL807 1 VL871 - VL873 1 VL891 - VL900 1 VL911 - VL914 1 VL931 - VL932 1 VL941 1 VN001 - VN041 1 VN051 - VN064 1 VN081 - VN099 1 VN111 - VN127 1 VN130 - VN137 1 VN151 - VN158 1 VN163 - VN168 1 VN171 - VN174 1 VN191 - VN198 1 VN211 - VN212 1 VN221 - VN225 1 VN231 - VN234 1 VN241 - VN243 1 VN251 - VN276 1 VN291 - VN293 1 VN301 - VN314 1 VN371 - VN372 1 VN376 1 VN381 - VN388

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 13 of 34 **BOEING SERVICE BULLETIN 767-28-0105 Group**  **Variable Number** 1 VN421 - VN427 1 VN436 1 VN471 - VN472 1 VN491 - VN513 1 VN531 - VN532 1 VN536 - VN537 1 VN541 - VN542 1 VN546 - VN547 1 VN551 1 VN556 - VN557 1 VN561 - VN562 1 VN631 - VN638 1 VN651 - VN658 1 VN671 - VN672 1 VN676 1 VN681 - VN691 1 VN731 - VN732 1 VN751 - VN753 1 VN791 - VN792 1 VN811 - VN813 1 VN921 - VN922 1 VN931 - VN936 1 VN951 - VN953 1 VN966 - VN972 1 VQ001 - VQ021 1 VQ071 - VQ086 1 VQ111 1 VR051 - VR060 1 VR081 1 VR084 1 VR086 - VR089 1 VR106 - VR109 1 VR201 - VR211

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 14 of 34 **BOEING SERVICE BULLETIN 767-28-0105 Group**  **Variable Number** 1 VR251 1 VR256 - VR260 1 VR266 - VR267 2 VR268 - VR284 1 VR401 1 VR421 - VR423 1 VR426 1 VR441 1 VR461 1 VR471 - VR472 1 VS051 - VS056 1 VS061 1 VS066 - VS070 1 VS073 - VS078 1 VS091 - VS104 1 VS111 - VS113 1 VS131 - VS133 1 VS136 - VS137 1 VS176 - VS177 1 VS186 - VS187 1 VS196 - VS203 1 VS206 - VS208 1 VS211 1 VS216 - VS217 1 VS231 1 VS246 - VS248 1 VS261 - VS263 1 VS266 - VS274 1 VS291 - VS293 1 VS301 - VS303 1 VS306 - VS311 1 VS316 1 VS321 - VS324

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 15 of 34 **BOEING SERVICE BULLETIN 767-28-0105 Group**  **Variable Number** 1 VS331 - VS333 1 VS336 - VS337 1 VS366 - VS367 1 VS381 - VS382 1 VS391 - VS392 1 VS401 1 VS426 - VS428 1 VS466 - VS472 1 VS486 1 VS496 - VS497 1 VS506 - VS507 1 VS526 1 VS546 - VS549 1 VS701 - VS736 1 VS751 - VS759 1 VS821 - VS825 1 VS841 - VS844 1 VS861 1 VS881 - VS883 1 VS891 1 VS896 1 VS901 - VS912 1 VS916 1 VS921 - VS923 2 VS924 - VS928 1 VS931 - VS933 2 VS941 2 VS951 - VS954 2 VS961 - VS969 2 VS971 - VS977 2 VS981 - VS982 2 VT001 - VT006 1 VT501

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 16 of 34 **BOEING SERVICE BULLETIN 767-28-0105 Group**  **Variable Number** 1 VT511 - VT513 1 VT521 - VT523 1 VT531 - VT533 1 VT541 - VT543 2 VT544 - VT545 2 VT551 - VT552 1 VW701 - VW721 1 VW851 2. Spares Affected None. **B. Concurrent Requirements** The service bulletin listed below must be done before or at the same time as this service bulletin: **Description Service Bulletin**  **Company** Fuel - Storage - Tank Access Door Replacement 767-28A0019 Original Issue Boeing
**C. Reason** This service bulletin provides instructions to inspect the Wing Fuel Tank Access Doors to make sure that Impact Resistant Access Doors are installed in the correct locations and stencils and index markers are applied. Fire can result from damage to a standard access door if it is located where an Impact Resistant Access Door is required. An operator identified a standard access door located where an Impact Resistant Access Door is required. In addition, the operator examined its spares stock and found that some Impact Resistant Access Doors were without stencils. These findings have raised a concern about the possibility of more standard access doors being installed at locations where Impact Resistant Access Doors are required. Impact Resistant Access Doors minimize risk of penetration from engine debris or objects thrown by airplane tires. By accomplishing the inspection in this service bulletin, operators can make sure that stencils and index markers are applied and Impact Resistant Access Doors are installed at the correct locations, providing increased resistance to Wing Fuel Tank penetration. Boeing Service Related Problem (SRP) 767-SRP-57-0225 is related to this service bulletin. Revision 1 is sent to tell operators that the service bulletin effectivity was revised to add new airplanes to Group 2 of this service bulletin effectivity. Group 2 was added to the service bulletin Effectivity to include all the 767 airplanes delivered prior to the release of the Maintenance Planning Data (MPD) update containing Airworthiness Limitation (AWL) 57-AWL-01, which makes sure that Impact Resistant Access Doors are installed at the correct locations. Also, one stencil location dimension on the alternate

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 17 of 34 **BOEING SERVICE BULLETIN 767-28-0105**configuration in Figure 1 and Figure 2 was corrected, and a footnote was added to allow for more flexibility for the stencil and marker locations. The General Visual Inspection Procedure in Appendix A, Option 1, has been updated to show that impact resistant access doors have flat ends. A compliance table was added to to Paragraph 1.E., Compliance. In addition, the last step in the Work Instructions was corrected. **D. Description** Identify the Wing Fuel Tank Access Doors. Do a General Visual Inspection or an ultrasonic Non-Destructive Test (NDT) to make sure that Impact Resistant Access Doors are installed in the correct locations. If a standard access door is identified in a location where an Impact Resistant Access Door is required, replace the door with an Impact Resistant Access Door. Do a General Visual Inspection to make sure that stencils and index markers are applied. If a stencil and/or index marker is missing, apply new stencil and/or index marker. Revision 1 - No more work is necessary on airplanes changed in accordance with the original issue of this service bulletin. The work in this service bulletin is done in the maintenance zone(s) given below. **Group 1:**
**Affected Maintenance Zones Zone**  **Model** 531, 532, 631, 632 767-200, 767-300, 767-300F, 767-400ER **Group 2:**
**Affected Maintenance Zones Zone**  **Model** 531, 532, 631, 632 767-300, 767-300F **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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 18 of 34 **BOEING SERVICE BULLETIN 767-28-0105 Table 1: Compliance Time for Impact Resistant Access Doors and Stencils and Index Markers**  **Inspection/Replacement Repeat Interval**  **(Not to Exceed) Compliance Time**  **Action Condition** 

- Within 72 monthsafter the original issue date of this service bulletinDo a General Visual Inspection or an ultrasonic Non-Destructive Test (NDT) of the left and right auxiliary fuel tank access doors, and the left andright main fuel tank access doors to make surethat Impact Resistant Access Doors are installed in the correct locations, inaccordance with Accomplishment Instructions, Step 1 and Step 5. All airplanes

- Before further flight. Replace each standardaccess door with an Impact Resistance access door, in accordance withAccomplishment Instructions, Step 2 and Step 6, as applicable.One or more standard access doors are found (i.e., impact resistant doors are not found).

- Within 72 monthsafter the original issue date of this service bulletinDo a General Visual Inspection of the left and right auxiliary fuel tank access doors, and the left and right main fuel tank access doors to makesure that stencils and index markers are applied,in accordance with Accomplishment Instructions, Step 3 and Step 7. All airplanes

- Before further flight.Apply stencil in accordance with Accomplishment Instructions, Step 4 and Step 8, as applicable. Any stencil is missing.

- Before further flight.Apply index marker in accordance with Accomplishment Instructions, Step 4 and Step 8, as applicable.Any index marker is missing.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 19 of 34 **BOEING SERVICE BULLETIN 767-28-0105 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 man-hours necessary to do this change for each airplane. This estimate is for direct labor only, done by experienced crews. Adjust the estimate with operator man-hour data if necessary. The estimate does not include lost time. These are 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. **OPTION 1: MAN-HOURS FOR GENERAL VISUAL INSPECTION PROCEDURE**
**More Data Elapsed Hours**  **Task Hours Number of Persons**  **Task** (a) 3.25 3.25 1 Figure 1 (a) 3.25 3.25 1 Figure 2 (a) 6.50 6.50 TOTAL FOR EACH AIRPLANE (a) Does not include time to defuel/refuel. **OPTION 2: MAN-HOURS FOR ULTRASONIC NON-DESTRUCTIVE TEST (NDT) INSPECTION PROCEDURE**
**More Data Elapsed Hours**  **Task Hours Number of Persons**  **Task** (a) 2.25 2.25 1 Figure 1 (a) 2.25 2.25 1 Figure 2 (a) 2.50 4.50 TOTAL FOR EACH AIRPLANE (a) Does not include time to defuel/refuel. **H. Weight and Balance Changes** None

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 20 of 34 **BOEING SERVICE BULLETIN 767-28-0105 I. Electrical Load Data**  Not applicable **J. References** 1. Existing Data: a. Boeing Service Related Problem (SRP) 767-SRP-57-0225 b. Boeing Service Bulletin 767-28A0019 c. Standard Overhaul Practices Manual (SOPM) 20-50-10 d. 767 Aircraft Maintenance Manual (AMM) 28-11-01, 28-11-02, 28-26-00 e. 767 Illustrated Parts Catalog (IPC) 28-11-01 f. 767 Non-Destructive Testing (NDT) Manual 767 NDT Part 4, 51-00-10 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin:
**Nomenclature Engineering Drawing**  Access Door Instl - Fuel Tank, Wing 112T6007 Marking Instl - Exterior, Wing 110T3301
**K. Publications Affected** 1. Publications: None. 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** Refer to Paragraph 2.C., Parts Necessary For Each Airplane, for interchangeability and intermixability information. **M. Software Accomplishment Summary** Not affected.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 21 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 22 of 34 **BOEING SERVICE BULLETIN 767-28-0105**

BLANK PAGE**2. MATERIAL INFORMATION A. Material - Price and Availability**  Refer to Paragraph 2.C., Parts Necessary For Each Airplane. **B. Industry Support Information Group 1:**  Boeing warranty remedies are available for 767 airplanes in warranty as of June 19, 2008. For inspection man-hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing Warranty & Product Assurance Contracts. If the condition described in this service bulletin is found during the initial inspection for airplanes in warranty as of that date and additional man-hours or parts are required, send a warranty claim to Boeing Warranty & Product Assurance Contracts. Warranty remedies are not available for continued inspections as described in this Service Bulletin as these actions are considered routine maintenance. **Group 2:** Boeing warranty remedies are not available for the inspection and repair procedures given in this service bulletin. **C. Parts Necessary for Each Airplane** 1. Kits/Parts: None 2. Parts and Materials Supplied by the Operator: Refer to Illustrated Parts Catalog (IPC) 767 IPC 28-11-01. 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 23 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 24 of 34 **BOEING SERVICE BULLETIN 767-28-0105**

BLANK PAGE**3. ACCOMPLISHMENT INSTRUCTIONS A. GENERAL INFORMATION**  **CAUTION:** KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL, METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR OTHER ELECTRICAL DAMAGE. **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 4. If the length of any fastener specified in this service bulletin does not meet the installation standards in SRM Chapter 51, then a fastener of the same specification, or an approved substitute, with a length which meets the installation standards in SRM Chapter 51 may be used. 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. A Non-Destructive Test (NDT) is an inspection/testing procedure used to determine the condition of a material in such a manner as to not damage or destroy the material under investigation. The material is examined for flaws or conditions that could be detrimental to the integrity of the structure. 7. 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. **B. WORK INSTRUCTIONS** 1. Do a General Visual Inspection (GVI) or an ultrasonic Non-Destructive Test (NDT) of the left auxiliary fuel tank and left main fuel tank access doors to make sure that Impact Resistant Access Doors are installed in the correct locations, in accordance with FIGURE 1.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 25 of 34 **BOEING SERVICE BULLETIN 767-28-0105**2. If one or more standard access doors are found, replace each standard access door with an Impact Resistance access door. Refer to 767 AMM 28-11-01 as an accepted procedure to replace main tank access doors. Refer to 767 AMM 28-11-02 as an accepted procedure to replace auxiliary tank access doors. 3. Do a General Visual Inspection of the left auxiliary fuel tank and left main fuel tank access doors to make sure that stencils and index markers are applied in accordance with FIGURE 1. 4. If a stencil and/or index marker is missing, apply stencil and/or index marker in accordance with FIGURE 1. 5. Do a GVI or an ultrasonic NDT of the right auxiliary fuel tank and right main fuel tank access doors to make sure that Impact Resistant Access Doors are installed in the correct locations, in accordance with FIGURE 2. 6. If one or more standard access doors are found, replace each standard access door with an Impact Resistance access door. Refer to 767 AMM 28-11-01 as an accepted procedure to replace main tank access doors. Refer to 767 AMM 28-11-02 as an accepted procedure to replace auxiliary tank access doors. 7. Do a General Visual Inspection of the right auxiliary fuel tank and right main fuel tank access doors to make sure that stencils and index markers are applied in accordance with FIGURE 2. 8. If a stencil and/or index marker is missing, apply stencil and/or index marker in accordance with FIGURE 2. 9. If one or more access doors were replaced and a leak check has not been done, refuel the applicable fuel tank and check for leaks. Repair if necessary. Refer to 767 AMM 28-11-01 as an accepted procedure to replace main tank access doors. Refer to 767 AMM 28-11-02 as an accepted procedure to replace auxiliary tank access doors. 10. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1: February 06, 2013 26 of 34 **BOEING SERVICE BULLETIN 767-28-0105**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 wing.

**FIGURE 1: ACCESS DOOR INSPECTION - LEFT WING (SHEET 1 OF 2)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 27 of 34 **BOEING SERVICE BULLETIN 767-28-0105 NOTE**  **QTY PART NUMBER**  **NAME TASK**  **STEP** (a) 5

- Access Door Inspect 1 (b) (c)

- - Stencil and Index Marker Inspect 2 (b) (c)

- - Stencil Inspect 3 (b) (c)

- - Index Marker Inspect 4 (a) In accordance with APPENDIX A. (b) If a stencil and/or index marker is missing, apply stencil and/or index marker with BMS 10-60, Polyurethane Gloss Enamel, matching color to existing stencil and/or index marker. Refer to SOPM 20-50-10 as an accepted procedure. (c) Stencil and/or Index Marker location may be adjusted, as required, to avoid application over fastener heads.

**FIGURE 1: ACCESS DOOR INSPECTION - LEFT WING (SHEET 2 OF 2)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 28 of 34 **BOEING SERVICE BULLETIN 767-28-0105**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 wing.

**FIGURE 2: ACCESS DOOR INSPECTION - RIGHT WING (SHEET 1 OF 2)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 29 of 34 **BOEING SERVICE BULLETIN 767-28-0105 NOTE**  **QTY PART NUMBER**  **NAME TASK**  **STEP** (a) 5

- Access Door Inspect 1 (b) (c)

- - Stencil and Index Marker Inspect 2 (b) (c)

- - Stencil Inspect 3 (b) (c)

- - Index Marker Inspect 4 (a) In accordance with APPENDIX A. (b) If a stencil and/or index marker is missing, apply stencil and/or index marker with BMS 10-60, Polyurethane Gloss Enamel, matching color to existing stencil and/or index marker. Refer to SOPM 20-50-10 as an accepted procedure. (c) Stencil and/or Index Marker location may be adjusted, as required, to avoid application over fastener heads.

**FIGURE 2: ACCESS DOOR INSPECTION - RIGHT WING (SHEET 2 OF 2)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 30 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Use one of these two procedures to inspect each of the specified access doors. **OPTION 1: GENERAL VISUAL INSPECTION PROCEDURE** 1. Defuel the applicable fuel tank. Refer to 767 AMM 28-26-00 as an accepted procedure. 2. Remove the access door. Refer to 767 AMM 28-11-01 as an accepted procedure to remove main tank access doors. Refer to 767 AMM 28-11-02 as an accepted procedure to remove auxiliary tank and main fuel tank access doors. 3. Do a General Visual Inspection of the internal surface of the access door. If the door ends are flat and the inner surface is smooth, then the door is an impact resistant access door (Figure A1). If the internal surface of the access door has protruding cast aluminum integral ribs and the door ends are rounded, then the door is a standard access door (Figure A1).

**APPENDIX A: PROCEDURE FOR ACCESS DOOR INSPECTION (SHEET 1 OF 4)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 31 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Figure A1

**APPENDIX A: PROCEDURE FOR ACCESS DOOR INSPECTION (SHEET 2 OF 4)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 32 of 34 **BOEING SERVICE BULLETIN 767-28-0105 OPTION 2: ULTRASONIC NON-DESTRUCTIVE TEST (NDT) INSPECTION PROCEDURE**  1. General: a. This procedure is permitted with or without fuel in the tanks. b. Refer to Non-Destructive Test (NDT) Standard Practices Manual 767 NDT Part 4, 51-00-10, Procedure 1 or 2, as an accepted procedure. 2. Equipment: a. Digital thickness gage: Kramer Branson CL300, or equivalent. b. Aluminum step wedge standard with a range that includes 0.08 to 0.50 inch. c. A 0.25 inch, 15mhz delay tip or equivalent transducer. d. Couplant: A low viscosity oil or UT couplant which will not damage the airplane structure. 3. Preparation: Clean fuel tank access door external skin. 4. Calibration: Calibrate the gage between 0.08 and 0.50 inch. 5. Inspection: a. Along the center line of the long axis, slowly scan the fuel tank access door from one end to the other end (Figure A2). b. If a rib is detected and the rib thickness is greater than 0.50 inch, then the door is a standard access door. c. If the access door has a thickness between 0.08 and 0.10 inch and no ribs are detected, then the access door is an impact resistant access door.

**APPENDIX A: PROCEDURE FOR ACCESS DOOR INSPECTION (SHEET 3 OF 4)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 33 of 34 **BOEING SERVICE BULLETIN 767-28-0105**Figure A2

**APPENDIX A: PROCEDURE FOR ACCESS DOOR INSPECTION (SHEET 4 OF 4)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: January 12, 2012 767-28-0105 Revision 1 February 06, 2013 34 of 34 **BOEING SERVICE BULLETIN 767-28-0105**