Boeing Special Attention Service Bulletin 747-25-3428: U.S. DOT/FAA - Boeing Service Bulletin, text

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Commercial Airplanes 747 Service Bulletin

SPECIAL ATTENTION Number: 747-25-3428 Original Issue: January 31, 2008 Revision 4: February 25, 2013 ATA System: 2560 SUBJECT: EQUIPMENT/FURNISHINGS - Emergency Equipment - Escape Slide/Raft Latch Replacement Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.

9E991ECCN:

Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company.

Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner™, BBJ, DC-8, DC-9, DC-10, KC-10, 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 31, 2008 747-25-3428Revision 4: February 25, 2013 1 of 104

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Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 2 of 104 BOEING SERVICE BULLETIN 747-25-3428

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Table of Contents

Revision Transmittal Sheet5

Summary7

1. PLANNING INFORMATION ........................................ 1 3 A. Effectivity ............................................... 1 3

1. Airplanes ............................................ 1 3

2. Spares Affected ........................................ 2 7 B. Concurrent Requirements ...................................... 2 7 C. Reason ................................................ 2 7 D. Description .............................................. 2 9 E. Compliance .............................................. 3 2 F. Approval ............................................... 3 2 G. Manpower .............................................. 3 3 H. Weight and Balance Changes .................................... 3 7 I. Electrical Load Data ......................................... 3 7 J. References .............................................. 3 7

1. Existing Data: ......................................... 3 7

2. Data Supplied with this Service Bulletin: ........................... 3 9

3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 3 9 K. Publications Affected ........................................ 3 9 L. Interchangeability and Intermixability of Parts ........................... 3 9 M. Software Accomplishment Summary ................................ 3 9

2. MATERIAL INFORMATION ........................................ 4 1 A. Material - Price and Availability ................................... 4 1 B. Industry Support Information .................................... 4 1 C. Parts Necessary for Each Airplane ................................. 4 2

1. Kits/Parts: ........................................... 4 2

2. Parts and Materials Supplied by the Operator: ........................ 4 2

3. Parts Modified and Reidentified: ............................... 4 3

4. Parts Removed and Not Replaced: .............................. 4 5 D. Parts Necessary to Change Spares ................................. 4 5 E. Special Tooling - Price and Availability ............................... 4 6 F. Special Tooling Necessary to do this Service Bulletin ....................... 4 6

3. ACCOMPLISHMENT INSTRUCTIONS .................................. 4 7 A. GENERAL INFORMATION ..................................... 4 7 B. WORK INSTRUCTIONS ....................................... 4 7 FIGURE 1: DOORS 1, 2, 3, AND 4 ESCAPE SLIDE/RAFT PACK ASSEMBLY REMOVAL [Group 1-2] . 53 FIGURE 2: DOORS 1, 2, 4, AND 5 ESCAPE SLIDE/RAFT PACK ASSEMBLY REMOVAL [Group 3, Configuration 3-4; Group 5-7, 10-23] ............................. 5 5 FIGURE 3: DOORS 1, 2, 4, AND 5 ESCAPE SLIDE/RAFT PACK ASSEMBLY REMOVAL [Group 8] . 57 FIGURE 4: DOOR 3 ESCAPE SLIDE PACK ASSEMBLY REMOVAL [Group 3, Configuration 1, 3; Group 4-6, Configuration 1; Group 7; Group 9-10, 13-17, 21-23, Configuration 1] ......... 5 9 FIGURE 5: DOOR 3 ESCAPE SLIDE PACK ASSEMBLY REMOVAL [Group 8] ............ 6 1 FIGURE 6: ESCAPE SLIDE/RAFT LATCH ASSEMBLY REMOVAL [Group 1-2; Group 3, Configuration 4;

Group 5-6, 10, Configuration 2; Group 11-12; Group 13-15, Configuration 2; Group 15, Configuration 3; Group 16, Configuration 2-3; Group 17, Configuration 2-3; Group 18-20; Group 21-22, Configuration 2; Group 22, Configuration 3; Group 23, Configuration 2] ....... 6 3 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 3 of 104 BOEING SERVICE BULLETIN 747-25-3428

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FIGURE 7: ESCAPE SLIDE LATCH ASSEMBLY REMOVAL [Group 3-4, 9, Configuration 1] ..... 6 5 FIGURE 8: ESCAPE SLIDE/RAFT AND ESCAPE SLIDE LATCH ASSEMBLY REMOVAL [Group 3, Configuration 3; Group 5-6, Configuration 1; Group 7; Group 10, 13-17, 21-23, Configuration 1] .................................................. 6 6 FIGURE 9: ESCAPE SLIDE/RAFT AND ESCAPE SLIDE LATCH ASSEMBLY REMOVAL [Group 8] . 68 FIGURE 10: ESCAPE SLIDE/RAFT AND ESCAPE SLIDE LATCH REPLACEMENT .......... 7 0 FIGURE 11: ESCAPE SLIDE/RAFT LATCH ASSEMBLY INSTALLATION [Group 1-2; Group 3, Configuration 4; Group 5-6, 10, Configuration 2; Group 11-12; Group 13-15, Configuration 2; Group 15, Configuration 3; Group 16, Configuration 2-3; Group 17, Configuration 2-3; Group 18-20; Group 21-22, Configuration 2; Group 22, Configuration 3; Group 23, Configuration 2] ....... 7 1 FIGURE 12: ESCAPE SLIDE LATCH ASSEMBLY INSTALLATION [Group 3-4, 9, Configuration 1] . . 73 FIGURE 13: ESCAPE SLIDE/RAFT AND ESCAPE SLIDE LATCH ASSEMBLY INSTALLATION [Group 3, Configuration 3; Group 5-6, Configuration 1; Group 7; Group 10, 13-17, 21-23, Configuration 1] .................................................. 7 5 FIGURE 14: ESCAPE SLIDE/RAFT AND ESCAPE SLIDE LATCH ASSEMBLY INSTALLATION [Group 8] .................................................. 7 7 FIGURE 15: DOORS 1, 2, 3, AND 4 ESCAPE SLIDE/RAFT PACK ASSEMBLY INSTALLATION [Group 1-2] .................................................. 7 9 FIGURE 16: DOORS 1, 2, 4, AND 5 ESCAPE SLIDE/RAFT PACK ASSEMBLY INSTALLATION [Group 3, Configuration 3-4; Group 5-7, 10-23] ............................. 8 1 FIGURE 17: DOORS 1, 2, 4, AND 5 ESCAPE SLIDE/RAFT PACK ASSEMBLY INSTALLATION [Group 8] .................................................. 8 3 FIGURE 18: DOOR 3 ESCAPE SLIDE PACK ASSEMBLY INSTALLATION [Group 3, Configuration 1, 3;

Group 4-6, Configuration 1; Group 7; Group 9-10, 13-17, 21-23, Configuration 1] ..... 8 5 FIGURE 19: DOOR 3 ESCAPE SLIDE PACK ASSEMBLY INSTALLATION [Group 8] .......... 8 7 FIGURE 20: ESCAPE SLIDE/RAFT AND ESCAPE SLIDE LATCH REPLACEMENT .......... 8 9 FIGURE 21: ESCAPE SLIDE/RAFT LATCH ASSEMBLY - REWORK [Group 1-2; Group 3, Configuration 1, 3-4; Group 4, Configuration 1; Group 5-8; Group 9, Configuration 1; Group 10-23] .... 9 0 FIGURE 22: ESCAPE SLIDE/RAFT LATCH ASSEMBLY - REPLACE [Group 1-2; Group 3, Configuration 1, 3-4; Group 4, Configuration 1; Group 5-8; Group 9, Configuration 1; Group 10-23] .... 9 4 FIGURE 23: ESCAPE SLIDE/RAFT LATCH ASSEMBLY - REWORK OR REPLACE [Group 24] .... 9 6 FIGURE 24: ESCAPE SLIDE/RAFT LATCH ASSEMBLY - REPLACE [Group 24] ........... 1 0 1 Appendix A: CORRECTLY ASSEMBLED SS112A1, SS112A11 OR SS112A12 LATCH DETERMINATION.

Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 4 of 104 BOEING SERVICE BULLETIN 747-25-3428

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Commercial Airplanes 747 Service Bulletin

SPECIAL ATTENTION Revision Transmittal SheetNumber: 747-25-3428Original Issue: January 31, 2008 Revision 4: February 25, 2013 ATA System: 2560 SUBJECT: EQUIPMENT/FURNISHINGS - Emergency Equipment - Escape Slide/Raft Latch Replacement This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on the airplane(s) changed in accordance with Revision 3 of this service bulletin.

More work is necessary on the airplane(s) changed in accordance with the original issue, Revision 1, or Revision 2 of this service bulletin.

REASON FOR REVISION This revision is sent to change a reference to the Component Maintenance Manual (CMM) and add optional part numbers from previously incorporated service bulletins. Also, to remove recently converted 747-400BCF Airplanes, RT061, RT530, RT654, RT691, and RT692, from the effectivity of this service bulletin.

These sections were changed:

1. In Paragraph 1.A.1., Airplanes, removed Airplanes, RT061, RT530, RT654, RT691, and RT692, from the effectivity of this service bulletin.

2. In Paragraph 1.J.1., Existing Data, added two service bulletins.

3. In Paragraph 2.A., Material - Price and Availability, the existing pricing is correct for this revision.

4. In Paragraph 2.C.3., Parts Modified and Reidentified, clarified existing part numbers.

5. In FIGURE 3 and FIGURE 5, clarfied existing part numbers.

6. In FIGURE 11, FIGURE 12 and FIGURE 13, added optional part number.

7. In FIGURE 14, added optional part number and changed more data reference.

8. In FIGURE 15, FIGURE 16, FIGURE 17, FIGURE 18 and FIGURE 19, added optional part numbers and clarified more data.

9. In FIGURE 23 and FIGURE 24, added optional part numbers.

Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 5 of 104

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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 31, 2008Original Issue:

August 21, 2008Revision 1:

March 04, 2010Revision 2:

June 14, 2012Revision 3:

February 25, 2013Revision 4:

Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 6 of 104 BOEING SERVICE BULLETIN 747-25-3428

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Commercial Airplanes 747 Service Bulletin

SPECIAL ATTENTION SummaryNumber: 747-25-3428Original Issue: January 31, 2008 Revision 4: February 25, 2013 ATA System: 2560 SUBJECT: EQUIPMENT/FURNISHINGS - Emergency Equipment - Escape Slide/Raft Latch Replacement BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

CONCURRENT REQUIREMENTS Group 1, 5, 10, 13:

For airplanes in Groups 1, 5, 10, and 13, the changes in this service bulletin cannot be made unless the changes given in Boeing service bulletin 747-25-2425, Revision 01, or the original issue are made.

Group 1, 5, 10, 13:

Service Bulletin 747-25-2425 describes procedures to install a new improved packboard latch, eliminate problems with the remote warning pressure vessel pressure gauge installed in doors, and to provide a packboard installation of improved design to reduce abrasion and punctures of slide/rafts from capnuts within the packboard. The changes given in service bulletin 747-25-2425 were made on Groups 2, 3, 6, 7, 11-12, 14-23 airplanes before delivery.

The related Goodrich service bulletin is Goodrich Aerospace SB 25-367 Revision 1. The changes in this service bulletin cannot be made unless the changes given in Goodrich Aerospace SB 25-367Revision 1 are made.

Goodrich Aerospace SB 25-367 Revision 1 describes procedures to remove, open/unpack the escape slide pack assembly and restore it after the packboard latch is changed.

BACKGROUND This service bulletin is prepared to replace worn or not correctly assembled latches on main deck escape slide/rafts and the escape slides installed on airplane doors. A worn or not correctly assembled latch mechanism can allow an escape slide/raft or escape slide to disconnect from a door. If this service bulletin is not done, operators may experience incidents of a latch hook moving from the closed to the open position. A slide/raft or slide with a latch hook in the open position could possibly not deploy correctly. A free item of mass could release or inflate in the cabin and cause injury to passengers and personnel. Also, a slide/raft or slide that accidentally deploys will not be available in an emergency.

The installed main deck escape slide/raft and escape slide latch use friction to keep the latch hook in the closed position. Corrosion and worn parts reduce friction between the parts of the latch that keep it in its closed position.

The new latch uses a retention feature for the latch to make sure it stays in the closed position.

Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 7 of 104

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The vendor earlier disclosed that a limited number of SS112A1 and SS112A11 latches had not been correctly assembled. Service Bulletin 747-25-3402 inspected and replaced latches by date of manufacture. The vendor has since disclosed that any SS112A1 or SS112A11 latch may not be correctly assembled. This bulletin makes sure latches are correctly assembled and replaces any that are not.

In response to 747 passenger fleet operator reports that main deck door escape slide/raft and ramp/slide latches have been observed to not be in the fully closed position in service, Boeing released Service Bulletin 747-25-3428 Revision 2 to add positive latch handle retention blocks to the latch handle in the closed position. Unfortunately, Boeing has received subsequent reports that the latch handles are still being observed in a partially open position after the positive latch handle retention block features had been installed. Therefore, Boeing 747-SRP-25-0300 was initiated to correct this anomaly. Service Bulletin 747-25-3428 Revision 3 was issued to resolve the escape slide/raft or ramp/slide latch handle migration issue.

Boeing Service Related Problems (SRP) 747/747OP-SRP-25-0253 and 747-SRP-25-0274 are related to this service bulletin.

This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.

ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedYesSpares Affected Paragraph 1.E., ComplianceYesAD Related Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator YesOperator Supplied Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION (PRR 85901-115RS) Group 3-4, 9, Configuration 2:

No work is necessary.

Group 1-2; Group 3, Configuration 1, 3-4; Group 4, Configuration 1; Group 5-8; Group 9, Configuration 1; Group 10-24:

Option 1 - Rework/Assemble Latch Assembly

1. Remove the escape slide/raft and/or the escape slide pack assembly.

2. Make sure the latch is correctly assembled.

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3. Remove the escape slide/raft and/or the escape slide latch assembly.

Condition 1 - Latch Correctly Assembled (Rework Latch Assembly) Condition 2 - Latch Not Correctly Assembled (Assemble Latch Assembly)

4. Install the changed escape slide/raft and/or the escape slide latch assembly on the packboard assembly.

5. Install the escape slide/raft and/or the escape slide pack assembly.

Group 1-2; Group 3, Configuration 1, 3-4; Group 4, Configuration 1; Group 5-8; Group 9, Configuration 1; Group 10-24:

Option 2 - Replace Latch Assembly

1. Remove the escape slide/raft and/or the escape slide pack assembly.

2. Replace the escape slide/raft and/or the escape slide latch assembly.

3. Install the changed escape slide/raft and/or the escape slide latch assembly on the packboard assembly.

4. Install the escape slide/raft and/or the escape slide pack assembly.

EFFECTIVITY 747-100/100B/100B SUD/200B/200C/-300/400/400D/SP airplanes. Refer to Paragraph 1.A., Effectivity, 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 operators accomplish the change given in this service bulletin within 48 months after the Revision 3 date of this service bulletin.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for 747 airplanes in warranty as of April 15, 2005. For man-hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing Warranty & Product Assurance Contracts. The kits for airplanes in warranty as of that date will be supplied at no charge. Send a purchase order for the kits (parts) to Boeing Spares. Please refer to this service bulletin number and reference the airplane variable number(s) in your purchase order. Warranty remedies are only available for airplanes which have incorporated original issue, Revision 1, or 2 of this service bulletin.

MANPOWER Refer to Paragraph 1.G., Manpower.

MATERIAL INFORMATION Boeing/Operator Supplied Parts.

Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 9 of 104 BOEING SERVICE BULLETIN 747-25-3428

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BOEING SERVICE BULLETIN 747-25-3428 Refer to Paragraph 2.A., Material - Price and Availability.

D3R D4R

- D4L D2R

• D3L D1R D1L D2L GROUPS 1-2 REMOVE ESCAPE SLIDE/RAFTS. DETERMINE D4R D5R IF LATCHES ARE CORRECTLY ASSEMBLED

REPLACE LATCHES THAT ARE NOT CORRECTLY ASSEMBLED. REWORK OR REPLACE LATCH ASSEMBLIES TO ADD NEW CLIP. INSTALL LATCH D5L ASSEMBLIES. INSTALL ESCAPE SLIDE/RAFTS.

D2R D4L D1R D1L D2L GROUPS 3, 5-7, 10-23 REMOVE ESCAPE SLIDE/RAFTS. DETERMINE

IF LATCHES ARE CORRECTLY ASSEMBLED

REPLACE LATCHES THAT ARE NOT CORRECTLY ASSEMBLED. REWORK OR REPLACE LATCH ASSEMBLIES TO ADD NEW CLIP. INSTALL LATCH ASSEMBLIES. INSTALL ESCAPE SLIDE/RAFTS.

D3R

• D3L GROUPS 3-7, 9, 10, 13-17, 21-23 REMOVE ESCAPE SLIDE/RAFTS. DETERMINE

IF LATCHES ARE CORRECTLY ASSEMBLED

REPLACE LATCHES THAT ARE NOT CORRECTLY ASSEMBLED. REWORK OR REPLACE LATCH ASSEMBLIES TO ADD NEW CLIP. INSTALL LATCH ASSEMBLIES. INSTALL ESCAPE SLIDE/RAFTS.

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BOEING SERVICE BULLETIN 747-25-3428 D4R D5R D1L D3R D5l D2R

• D4L

- D3L D1R D1L D2L GROUP 8 REMOVE ESCAPE SLIDE/RAFTS. DETERMINE

IF LATCHES ARE CORRECTLY ASSEMBLED

REPLACE LATCHES THAT ARE NOT CORRECTLY ASSEMBLED. REWORK OR REPLACE LATCH ASSEMBLIES TO ADD CLIP. INSTALL LATCH ASSEMBLIES. INSTALL ESCAPE SLIDE/RAFTS.

GROUP 24 REMOVE ESCAPE SLIDE/RAFT. DETERMINE

IF LATCH ARE CORRECTLY ASSEMBLED

REPLACE LATCH IF NOT CORRECTLY ASSEMBLED

REWORK OR REPLACE LATCH ASSEMBLIES TO ADD CLIP. INSTALL LATCH ASSEMBLIES. INSTALL ESCAPE SLIDE/RAFTS.

ESCAPE SLIDE/RAFT

LATCH REPLACEMENT LATCH

ASSEMBLY ESCAPE

SLIDE/RAFT 1309989 Original Issue: January 31, 2008 Revision 4: February 25, 2013 Export Controlled ECCN: 9E991 - BOEING 747-25-3428 PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 104

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Original Issue: January 31, 2008 747-25-3428Revision 4: February 25, 2013 12 of 104 BOEING SERVICE BULLETIN 747-25-3428

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