### Commercial **Airplanes** 

# 767

Service Bulletin **SPECIAL ATTENTION Number:**  **767-25-0548** Original Issue: November 05, 2014 Revision 1: April 23, 2015 ATA System: 2566 **SUBJECT:** EQUIPMENT/FURNISHINGS - Door - Mounted Escape System - Slide Inflation Valve

- Rework 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 © 2014 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 Unpublished Work.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, 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: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 1of28 2.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 2of28 **BOEING SERVICE BULLETIN 767-25-0548**

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

......... . ................................ . . . . 17 E. Compliance

......................................... . . . . . 18 F. Approval

............................................ . . . 18 G. Manpower

.......................................... . . . . 18 H. Weight and Balance Changes

............................... . . . . . 19 I. Electrical Load Data

.... ................................. . . . . 19 J. References

.......................................... . . . . 19 1. Existing Data:

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

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

....... . . . . 19 K. Publications Affected

.................................... . . . . 20 L. Interchangeability and Intermixability of Parts

....................... . . . . 20 M. Software Accomplishment Summary

............................ . . . . 20 2. MATERIAL INFORMATION

... ................................. . . . . 21 A. Material - Price and Availability

.............................. . . . . . 21 B. Industry Support Information

............................... .. . . . 21 C. Parts Necessary for Each Airplane

............................. . . . . 21 1. Kits/Parts

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

.................... . . . . 21 3. Parts Modified and Reidentified

............................ . . . . 21 4. Parts Removed and Not Replaced

.......................... . . . . 21 D. Parts Necessary to Change Spares

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

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

................... . . . . 21 3. ACCOMPLISHMENT INSTRUCTIONS

.............................. . . . . 23 A. GENERAL INFORMATION

. ............................... .. . . . 23 B. WORK INSTRUCTIONS

................................... . . . . 24 FIGURE 1: FORWARD AND AFT ENTRY/SERVICE DOORS MODIFICATION

........ . . . . 25 FIGURE 2: MID ENTRY/SERVICE DOORS MODIFICATION

................. . . . . . 27

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 3of28 **BOEING SERVICE BULLETIN 767-25-0548**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 4of28 **BOEING SERVICE BULLETIN 767-25-0548**

BLANK PAGE

### Commercial **Airplanes** 

# 767

Service Bulletin **SPECIAL ATTENTION Revision Transmittal Sheet**  **Number: 767-25-0548**  Original Issue: November 05, 2014 Revision 1: April 23, 2015 ATA System: 2566 **SUBJECT:** EQUIPMENT/FURNISHINGS - Door - Mounted Escape System - Slide Inflation Valve

- Rework This revision includes all pages of the service bulletin. **COMPLIANCE INFORMATION RELATED TO THIS REVISION** Airplane VT033 was added to Group 1 of this service bulletin effectivity. Effects of this Revision on airplanes on which Original Issue was previously done: None. **REASON FOR REVISION** This revision is sent to add airplane VT033 to this service bulletin effectivity. These sections were changed: 1. In Paragraph 1.A.1., Airplanes, added airplane to Group 1. 2. In Paragraph 1.C., Reason, added paragraph. 3. In Paragraph 1.D., Description, added revision paragraph. 4. In Paragraph 1.J.1., Existing Data, added references. 5. In Paragraph 3.A., General Information, added note. 6. In Paragraph 3.B., Work Instructions, changed steps. Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity and format changes, to show the location of all content changes. Pages with no vertical lines have no changes. **REVISION HISTORY** November 05, 2014 Original Issue:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 5of28April 23, 2015

Revision 1:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 6of28 **BOEING SERVICE BULLETIN 767-25-0548**

### Commercial **Airplanes** 

# 767

Service Bulletin **SPECIAL ATTENTION Summary**  **Number: 767-25-0548**  Original Issue: November 05, 2014 Revision 1: April 23, 2015 ATA System: 2566 **SUBJECT:** EQUIPMENT/FURNISHINGS - Door - Mounted Escape System - Slide Inflation Valve

- Rework BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **CONCURRENT REQUIREMENTS** Refer toParagraph 1.B., Concurrent Requirements

. **BACKGROUND** Accomplishment of this service bulletin will ensure that the escape slide packs mounted on the Forward, Mid and Aft entry and service doors do not experience an un-commanded deployment of the escape slide. If this service bulletin is not accomplished, un-commanded deployment of the slide during normal airplane maintenance or operation could result in injury to passengers and crew, damage to equipment, and the slide could not be used in an emergency evacuation. Two incidents of uncommanded escape slide inflation have been reported. In both cases, out of tolerance trigger mechanism components (sector and sear) were found in the regulator valves which produced insufficient trigger engagement and reduced pull force values. Accomplishment of this service bulletin will modify the regulator valve by replacing the existing trigger mechanism sector and sear. Boeing Service Related Problem (SRP)767-25-0328is 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 Yes Spares Affected Paragraph 1.E., ComplianceandParagraph 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 Yes Publications Affected

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 7of28**Reference Affected**  **Planning Data** 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 Yes Kits/Parts Required 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** Remove escape slide packs located at the Forward and Aft Entry and Service Doors. Modify regulator valve in accordance with UTC Aerospace Systems Service Bulletin 130104-25-432 or 4A3939-25-434. Reinstall escape slide packs. On airplanes equipped with Mid Entry and Service Doors, remove escape slide packs and modify regulator valve in accordance with UTC Aerospace Systems Service Bulletin 130104-25-432 or 4A3939-25-434. Reinstall escape slide packs. **EFFECTIVITY** 767-200, 767-300 and 767-400ER Airplanes. 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 42 months after the original issue date of this service bulletin. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are not available for the configuration changes given in this service bulletin. Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. **MANPOWER** Refer toParagraph 1.G., Manpower

. **MATERIAL INFORMATION** Operator Supplied Parts/Materials. Refer toParagraph 2.A., Material - Price and Availability

.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 8of28 **BOEING SERVICE BULLETIN 767-25-0548**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 9of28 **BOEING SERVICE BULLETIN 767-25-0548**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 10of28 **BOEING SERVICE BULLETIN 767-25-0548**

BLANK PAGE

### Commercial **Airplanes** 

# 767

Service Bulletin **SPECIAL ATTENTION Number:**  **767-25-0548** Original Issue: November 05, 2014 Revision 1: April 23, 2015 ATA System: 2566 **SUBJECT:** EQUIPMENT/FURNISHINGS - Door - Mounted Escape System - Slide Inflation Valve

- Rework BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **1. PLANNING INFORMATION A.**  **Effectivity** 1. Airplanes Refer toService Bulletin Index D624T001Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is applicable to 767-200, -300, -400ER Airplanes, line numbers 1 - 1064 & 1068 in 1 Group. The Variable Numbers and Group Information for the applicable airplanes is given below. **DESCRIPTION CONFIGURATION**  **GROUP** All airplanes that have escape slide regulator valves.

- 1
Airplane Models: 767-200,767-300,767-400ER **Group Variable Number**  1 VA001 - VA020 1 VA301 - VA315 1 VA501 - VA510 1 VA512 - VA530 1 VA701 - VA719 1 VA801 - VA810 1 VB001 - VB002

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 11of28**Group Variable Number**  1 VB051 - VB055 1 VB101 - VB125 1 VB201 - VB202 1 VB251 - VB253 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 12of28 **BOEING SERVICE BULLETIN 767-25-0548 Group**  **Variable Number** 1 VK031 - VK056 1 VK081 - VK113 1 VK131 - VK133 1 VK141 - VK148 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 VN198 1 VN211 - VN212 1 VN221 - VN225 1 VN231 - VN234 1 VN241 - VN243 1 VN251 - VN276 1 VN291 - VN293

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 13of28 **BOEING SERVICE BULLETIN 767-25-0548 Group**  **Variable Number** 1 VN301 - VN314 1 VN371 - VN372 1 VN376 1 VN381 - VN388 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 VN811 - VN813 1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 14of28 **BOEING SERVICE BULLETIN 767-25-0548 Group**  **Variable Number** 1 VR086 - VR089 1 VR106 - VR109 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 1 VS331 - VS333 1 VS336 - VS337

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 15of28 **BOEING SERVICE BULLETIN 767-25-0548 Group**  **Variable Number** 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 - VS928 1 VS931 - VS933 1 VS941 1 VS951 - VS954 1 VS961 - VS969 1 VS971 - VS977 1 VS981 - VS984 1 VT001 - VT013 1 VT021 1 VT031 - VT033

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 16of28 **BOEING SERVICE BULLETIN 767-25-0548**2. Spares Affected Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. **B. Concurrent Requirements**  The service bulletins listed below must be done before or at the same time as this service bulletin: **Description Service Bulletin**  **Company** This service bulletin replaces the trigger mechanism sector and sear on the slides regulator valve. 130104-25-432 dated August 11, 2014 UTC Aerospace Systems This service bulletin replaces the trigger mechanism sector and sear on the slides regulator valve 4A3939-25-434 dated August 11, 2014 UTC Aerospace Systems
**C. Reason**  Accomplishment of this service bulletin will ensure that the escape slide packs mounted on the Forward, Mid and Aft entry and service doors do not experience an un-commanded deployment of the escape slide. If this service bulletin is not accomplished, un-commanded deployment of the slide during normal airplane maintenance or operation could result in injury to passengers and crew, damage to equipment, and the slide could not be used in an emergency evacuation. Two incidents of uncommanded escape slide inflation have been reported. In both cases, out of tolerance trigger mechanism components (sector and sear) were found in the regulator valves which produced insufficient trigger engagement and reduced pull force values. Accomplishment of this service bulletin will modify the regulator valve by replacing the existing trigger mechanism sector and sear. Boeing Service Related Problem (SRP)767-25-0328is related to this service bulletin. Revision 1 is sent to add airplane VT033 to this service bulletin effectivity.
**D. Description**  Remove escape slide packs located at the Forward and Aft Entry and Service Doors. Modify regulator valve in accordance with UTC Aerospace Systems Service Bulletin 130104-25-432 or 4A3939-25-434. Reinstall escape slide packs. On airplanes equipped with Mid Entry and Service Doors, remove escape slide packs and modify regulator valve in accordance with UTC Aerospace Systems Service Bulletin 130104-25-432 or 4A3939-25-434. Reinstall escape slide packs. Effects of this Revision on airplanes on which Original Issue was previously done: None. The work in this service bulletin is done in the maintenance zone(s) given below.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 17of28 **BOEING SERVICE BULLETIN 767-25-0548 Group 1:** 

**Affected Maintenance Zones Zone**  **Model** 831, 833, 841, 843 767-200 **Group 1: Affected Maintenance Zones**  **Zone Model**  831, 833, 835, 841, 843, 845 767-300, 767-400ER **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 the change given in this service bulletin be done within 42 months after the original issue date of this service bulletin. **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 tables below show an estimate of the task hours necessary to do this modification for each Figure. 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 inspect the work
• Time to cure the materials
• Time to make the parts
• Time to find the tools.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 18of28 **BOEING SERVICE BULLETIN 767-25-0548 FIGURE 1**  **Elapsed Hours Task Hours**  **Number of Persons Task**  1.50 3.00 2 Open Access 1.50 3.00 2 Close Access (a) This estimate does not include the task hour data given in the service bulletins in Paragraph 1.B., Concurrent Requirements. **FIGURE 2 Elapsed Hours**  **Task Hours Number of Persons**  **Task** 0.75 1.50 2 Open Access 0.75 1.50 2 Close Access (a) This estimate does not include the task hour data given in the service bulletins in Paragraph 1.B., Concurrent Requirements. **H. Weight and Balance Changes**  None. **I. Electrical Load Data**  Not changed. **J. References**  1. Existing Data:
a. Engineering Change Memo MRR 625014-004S b. Boeing Service Related Problem (SRP)767-25-0328
c. Service Bulletin IndexD624T001 d. 767 Aircraft Maintenance Manual (AMM)25-66-01
e. UTC Aerospace Systems Service Bulletin 130104-25-432, 4A3939-25-434 **NOTE:** The supplier was told to send copies of the service bulletins to each operator. 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin: None.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 19of28 **BOEING SERVICE BULLETIN 767-25-0548 K.**  **Publications Affected**

1. Publications: **Chapter-Section Publication**  25-65, 25-66 767 Illustrated Parts Catalog 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 UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. **M. Software Accomplishment Summary**  Not affected.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 20of28 **BOEING SERVICE BULLETIN 767-25-0548 2. MATERIAL INFORMATION**  **A. Material - Price and Availability**  Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. **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 Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. 2. Parts and Materials Supplied by the Operator Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. 3. Parts Modified and Reidentified Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. 4. Parts Removed and Not Replaced Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. **D. Parts Necessary to Change Spares**  Refer to UTC Aerospace Systems Service Bulletins 130104-25-432, 4A3939-25-434. **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 inParagraph 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: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 21of28 **BOEING SERVICE BULLETIN 767-25-0548**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 22of28 **BOEING SERVICE BULLETIN 767-25-0548**

BLANK PAGE**3. ACCOMPLISHMENT INSTRUCTIONS A.**  **GENERAL INFORMATION NOTE:**  1. Manual titles are referred to by acronyms. Refer toParagraph 1.J., References, for

definition of the acronyms. 2. Obey all of the warnings and cautions given in the specified manual sections. 3. Unless shown differently, these dimensions and tolerances are used:

– Linear dimensions are in inches

– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03 inch

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

– Angular tolerance is plus or minus 2 degrees

– Hole dimensions for standard solid rivets and fasteners are in Structural Repair Manual (SRM) Chapter 51

– Torque Values:

— Non-standard torque values for maintenance tasks are included in the applicable installation step.
4. Use the approved fastener, process and material substitutions in accordance with

SRM Chapter 51. 5. 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. 6. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed. 7. Use of colors in Figures is based on guidance from the ATA e-Business Program

(ATA) iSpec 2200. 8. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS are inParagraph 1.E., Compliance

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

If this service bulletin is mandated by an Airworthiness Directive (AD), then the steps identified as RC and steps indented under an RC step must be done to comply with the AD. Alternative procedures for steps not identified with RC can be used if the RC steps and indented steps can still be done as specified, and the airplane can be put back in a serviceable condition. An Alternative Method of Compliance (AMOC) is not necessary for deviations to steps that are not identified as RC.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 23of28 **BOEING SERVICE BULLETIN 767-25-0548 B.**  **WORK INSTRUCTIONS**

1. RC - Modify Forward Entry Door, Forward Service Door, Aft Entry Door and Aft Service door in accordance with Figure 1. 2. RC - On airplanes equipped with Mid Entry and Service Doors, modify Mid Entry Door and Mid Service Door in accordance with Figure 2. 3. Put the airplane back in a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1:April 23, 2015 24of28 **BOEING SERVICE BULLETIN 767-25-0548 FIGURE 1:** **FORWARD AND AFT ENTRY/SERVICE DOORS MODIFICATION (SHEET 1 OF 2)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1April 23, 2015 25of28 **BOEING SERVICE BULLETIN 767-25-0548**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane. **MORE DATA QTY**  **IDENTIFI- CATION**  **NAME TASK**  **STEP** Refer to767 AMM 25-66-01

. 4 - Escape Slide Pack Remove 1 In accordance with UTC Aerospace Systems Service Bulletins 130104- 25-432 or 4A3939-25-434. 4 - Regulator Valve Modify 2

Refer to767 AMM 25-66-01

. 4 - Escape Slide Pack Reinstall 3

**FIGURE 1: FORWARD AND AFT ENTRY/SERVICE DOORS MODIFICATION**  **(SHEET 2 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1April 23, 2015 26of28 **BOEING SERVICE BULLETIN 767-25-0548 FIGURE 2:** **MID ENTRY/SERVICE DOORS MODIFICATION (SHEET 1 OF 2)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1April 23, 2015 27of28 **BOEING SERVICE BULLETIN 767-25-0548**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane. **MORE DATA QTY**  **IDENTIFI- CATION**  **NAME TASK**  **STEP** Refer to767 AMM 25-66-01

. 2 - Escape Slide Pack Remove 1 In accordance with UTC Aerospace Systems Service Bulletins 130104- 25-432 or 4A3939-25-434. 2 - Regulator Valve Modify 2

Refer to767 AMM 25-66-01

. 2 - Escape Slide Pack Reinstall 3

**FIGURE 2: MID ENTRY/SERVICE DOORS MODIFICATION**  **(SHEET 2 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 05, 2014 767-25-0548 Revision 1April 23, 2015 28of28 **BOEING SERVICE BULLETIN 767-25-0548**