# Boeing Special Attention Service Bulletin 767-57-0121: U.S. DOT/FAA - Service Information - 1 - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2011-0567; AD 2012-21-02 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Special Attention Service Bulletin 767-57-0121](https://openairdocs.org/service-documents/boeing/sb-767-57-0121.md) - Title as filed: U.S. DOT/FAA - Service Information - 1 - Pages: 10 - PDF: https://openairdocs.org/files/sha256/17/bf/17bf92e6e5f13e2d30f8fa72ea74d1697f0310f2a36311475dbbb36d5456a1d1 - Page: https://openairdocs.org/service-documents/boeing/sb-767-57-0121/file/17bf92e6e5f1 ## Text Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Commercial Airplanes 767 Service Bulletin SPECIAL ATTENTION Number: 767-57-0121 Original Issue: October 07, 2010 Revision 2: January 10, 2012 ATA System: 5700 SUBJECT: WINGS - Leading Edge and Leading Edge Devices - Leading Edge Fluid Drainage Path Change Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). 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all export laws. 9E991ECCN: BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2010 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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, 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, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery 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 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 1 of 10 2.0 ### Page 2 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 2 of 10 BOEING SERVICE BULLETIN 767-57-0121 BLANK PAGE ### Page 3 Commercial Airplanes 767 Service Bulletin SPECIAL ATTENTION Short Form RevisionNumber: 767-57-0121Original Issue: October 07, 2010 Revision 2: January 10, 2012 ATA System: 5700 SUBJECT: WINGS - Leading Edge and Leading Edge Devices - Leading Edge Fluid Drainage Path Change Revision 2 is sent to change information. Only the changed information is described below. Revision 1 and Revision 2 are necessary to do the service bulletin. COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on the airplanes changed in accordance with the original issue or Revision 1 of this service bulletin. Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2010-NM-272-AD, is related to this service bulletin. REASON FOR REVISION This revision is sent to add part marking instructions for the wing panels and ribs modified in figures 1, 2, 5, 6, 7 and 8 and to add replacement parts that are available for purchase. REVISION HISTORY October 07, 2010Original Issue: July 27, 2011Revision 1: January 10, 2012Revision 2: EFFECTIVITY 767-200, -300, -300F, -400ER Airplanes. Refer to Paragraph 1.A.1., Airplanes, in Revision 1 of this service bulletin for the list of affected airplanes. 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. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 3 of 10 ### Page 4 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. EXISTING INFORMATION The following is the existing information in the service bulletin: 1. In Paragraph 1.K. - Publications Affected, item 1 is shown as follows: 1. Publications: None. 2. In Paragraph 2.C.2. - Parts and Materials Supplied by the Operator, the table is shown as follows: NotesNameQTYPart Number / Specification (a)Sealant-BMS5-45 (a)Primer-BMS10-79, TYPE III (a)Enamel-BMS10-60, TYPE II, BAC707 GRAY GLOSS (a)Hole Filling Compound-BMS5-16 (BMS5- 45 CLASS B or BMS5-95 CLASS B or BMS5-142 CLASS B optional) (a)Leveling Compound-BMS5-125 TYPE III (a)Sealant-BMS5-142 (BMS5- 45 optional) Chemical Conversion Coating-Refer to SOPM 20- 43-03 Parting Agent-Refer to SOPM 20- 50-19 This part replaces existing lower leading edge skin pan 521EB. Panel Assy1654T0513-1301 This part replaces existing lower leading edge skin pan 621EB. Panel Assy1654T0513-1302 (a) Refer to the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 4 of 10 BOEING SERVICE BULLETIN 767-57-0121 ### Page 5 3. In Paragraph 2.C.3. - Parts Modified and Reidentified, the table is shown as follows: NotesNew Part NumberNameQTYExisting Part Number (a) (c) (d) (e)114T2400-( )Skin Panel, Outboard, Lower Leading Edge, Outboard 1114T2400-( ) (521EB) (521EB) (b) (a) (c) (d) (e)114T2400-( )Skin Panel, Outboard, Lower Leading Edge, Outboard 1114T2400-( ) (621EB) (621EB) (b) (a) Make the change in accordance with this service bulletin. (b) There is no equivalent Boeing part number for the changed part. Identify on the part that the change done in accordance with this service bulletin was made. (c) This is the part number after the change is done in accordance with this service bulletin. (d) This part is not used in production. (e) A production panel can be purchased from Boeing as an alternative to modifying the existing panel. 4. In Paragraph 3.B., Work Instructions: a. Part 1 is shown as follows: Part 1 - Lower Wing Skin Change (1) Change the leading edge lower wing skin panels below in accordance with the applicable figures below: Right WingLeft Wing FIGURE 2621ABFIGURE 1521AB FIGURE 4621EBFIGURE 3521EB NOTE: The leading edge lower wing skin panels in the table below can be purchased from Boeing with the changes already incorporated by this service bulletin. See the table below for applicable part numbers. Right WingLeft Wing 654T0513-1302621EB654T0513-1301521EB (2) Change the seal door at OSS 424.097 in accordance with the figures below: Right WingLeft Wing FIGURE 6FIGURE 5 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 5 of 10 BOEING SERVICE BULLETIN 767-57-0121 ### Page 6 5. In FIGURE 1: LEFT WING SKIN PANEL 521AB CHANGE, the step table is shown with Steps 1 through 6. 6. In FIGURE 2: RIGHT WING SKIN PANEL 621AB CHANGE, the step table is shown with Steps 1 through 6. 7. In FIGURE 5: LEFT WING SEAL DOOR CHANGE AT OSS 424.097, the step table is shown with Steps 1 through 6. 8. In FIGURE 6: RIGHT WING SEAL DOOR CHANGE AT OSS 424.097, the step table is shown with Steps 1 through 6. 9. In FIGURE 7: LEFT WING RIB CHANGE AT OSS 464.475, the step table is shown with Steps 1 through 12. 10. In FIGURE 8: RIGHT WING RIB CHANGE AT OSS 464.475, the step table is shown with Steps 1 through 12. CHANGED INFORMATION For each numbered item in the CHANGED INFORMATION, refer to the same numbered item in the EXISTING INFORMATION. The following is the changed information in the service bulletin: 1. In Paragraph 1.K. - Publications Affected, item 1 is changed as follows: 1. Publications: Chapter SectionPublication 57-41767 Illustrated Parts Catalog 2. In Paragraph 2.C.2. - Parts and Materials Supplied by the Operator, the table is changed as follows: NotesNameQTYPart Number / Specification (a)Sealant-BMS5-45 (a)Primer-BMS10-79, TYPE III (a)Enamel-BMS10-60, TYPE II, BAC707 GRAY GLOSS (a)Hole Filling Compound-BMS5-16 (BMS5- 45 CLASS B or BMS5-95 CLASS B or BMS5-142 CLASS B optional) (a)Leveling Compound-BMS5-125 TYPE III BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 6 of 10 BOEING SERVICE BULLETIN 767-57-0121 ### Page 7 NotesNameQTYPart Number / Specification (a)Sealant-BMS5-142 (BMS5- 45 optional) Chemical Conversion Coating-Refer to SOPM 20- 43-03 Parting Agent-Refer to SOPM 20- 50-19 This part replaces existing lower leading edge skin panel 521EB. (b) Panel Assy1654T0513-1301 This part replaces existing lower leading edge skin panel 621EB. (b) Panel Assy1654T0513-1302 This part replaces existing lower leading edge skin panel 521AB. (b) Panel Assy1114T2400-839 This part replaces existing lower leading edge skin panel 621AB. (b) Panel Assy1114T2400-840 This part replaces existing seal door panel at OSS 424.097. (b) Door Assy - OSS 424.0971114T0205-123 This part replaces existing sealdoor panel at OSS 424.097. (b) Door Assy - OSS 424.0971114T0205-123 (a) Refer to the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data. (b) These panels can be purchased from Boeing with the changes already incorporated by this service bulletin. 3. In Paragraph 2.C.3. - Parts Modified and Reidentified, the table is changed as follows: NotesNew Part NumberNameQTYExisting Part Number (a) (c) (d) (e)114T2400-( )Skin Panel, Outboard, Lower Leading Edge, Outboard 1114T2400-( ) (521AB) (521AB) (b) (a) (c) (d) (e)114T2400-( )Skin Panel, Outboard, Lower Leading Edge, Outboard 1114T2400-( ) (621AB) (621AB) (b) (a) (c) (d) (e)114T2400-( )Skin Panel, Outboard, Lower Leading Edge, Outboard 1114T2400-( ) (521EB) (521EB) (b) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 7 of 10 BOEING SERVICE BULLETIN 767-57-0121 ### Page 8 NotesNew Part NumberNameQTYExisting Part Number (a) (c) (d) (e)114T2400-( )Skin Panel, Outboard, Lower Leading Edge, Outboard 1114T2400-( ) (621EB) (621EB) (b) (a) (c) (d) (e)114T0205-( )Seal Door - Leading Edge, Outboard Wing 1114T0205-( ) (521AMB) (521AMB) (b) (a) (c) (d) (e)114T0205-( )Seal Door - Leading Edge, Outboard Wing 1114T0205-( ) (621AMB) (621AMB) (b) (a) (c) (d) (e)114T2605-( )Rib - OSS 464.475 Leading Edge Outboard Wing 2114T2605-( ) (b) (a) Make the change in accordance with this service bulletin. (b) There is no equivalent Boeing part number for the changed part. Identify on the part that the change done in accordance with this service bulletin was made. (c) This is the part number after the change is done in accordance with this service bulletin. (d) This part is not used in production. (e) A production panel can be purchased from Boeing as an alternative to modifying the existing panel. 4. In Paragraph 3.B., Work Instructions: a. Part 1 is changed as follows: Part 1 - Lower Wing Skin Change (1) Change the leading edge lower wing skin panels below in accordance with the applicable figures below: Right WingLeft Wing FIGURE 2621ABFIGURE 1521AB FIGURE 4621EBFIGURE 3521EB NOTE: The leading edge lower wing skin panels in the table below can be purchased from Boeing with the changes already incorporated by this service bulletin. See the table below for applicable part numbers. Right WingLeft Wing 114T2400-840621AB114T2400-839521AB 654T0513-1302621EB654T0513-1301521EB (2) Change the seal door at OSS 424.097 in accordance with the figures below: BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 8 of 10 BOEING SERVICE BULLETIN 767-57-0121 ### Page 9 Right WingLeft Wing FIGURE 6FIGURE 5 NOTE: The seal doors in the table below can be purchased from Boeing with the changes already incorporated by this service bulletin. See the table below for applicable part numbers. Right WingLeft Wing 114T0205-124114T0205-123 5. In FIGURE 1: LEFT WING SKIN PANEL 521AB CHANGE, the step table is changed to add Step 7 as follows: MORE DATAQTYIDENTIFICATIONNAMETASKSTEP Apply rubber stamp to identify that this service bulletin was done. Refer to SOPM 20-50-10 as an accepted proce- dure. (Not shown) 1521ABSkin PanelIdentify7 6. In FIGURE 2: RIGHT WING SKIN PANEL 621AB CHANGE, the step table is changed to add Step 7 as follows: MORE DATAQTYIDENTIFICATIONNAMETASKSTEP Apply rubber stamp to identify that this service bulletin was done. Refer to SOPM 20-50-10 as an accepted proce- dure. (Not shown) 1621ABSkin PanelIdentify7 7. In FIGURE 5: LEFT WING SEAL DOOR CHANGE AT OSS 424.097, the step table is changed to add Step 7 as follows: MORE DATAQTYIDENTIFICATIONNAMETASKSTEP Apply rubber stamp to identify that this service bulletin was done. Refer to SOPM 20-50-10 as an accepted proce- dure. (Not shown) 1521AMBSeal DoorIdentify7 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 9 of 10 BOEING SERVICE BULLETIN 767-57-0121 ### Page 10 8. In FIGURE 6: RIGHT WING SEAL DOOR CHANGE AT OSS 424.097, the step table is changed to add Step 7 as follows: MORE DATAQTYIDENTIFICATIONNAMETASKSTEP Apply rubber stamp to identify that this service bulletin was done. Refer to SOPM 20-50-10 as an accepted proce- dure. (Not shown) 1621AMBSeal DoorIdentify7 9. In FIGURE 7: LEFT WING RIB CHANGE AT OSS 464.475, the step table is changed to add Step 13 as follows: MORE DATAQTYIDENTIFICATIONNAMETASKSTEP Apply rubber stamp to identify that this service bulletin was done. Refer to SOPM 20-50-10 as an accepted proce- dure. (Not shown) --RibIdentify13 10. In FIGURE 8: RIGHT WING RIB CHANGE AT OSS 464.475, the step table is changed to add Step 13 as follows: MORE DATAQTYIDENTIFICATIONNAMETASKSTEP Apply rubber stamp to identify that this service bulletin was done. Refer to SOPM 20-50-10 as an accepted proce- dure. (Not shown) --RibIdentify13 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: October 07, 2010 767-57-0121Revision 2: January 10, 2012 10 of 10 BOEING SERVICE BULLETIN 767-57-0121 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. 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