This sheet transmits REVISION 1dated September 7, 1979 of Service BulletinNo. 747-25-2425, "Slide/RaftPack Board ImprovementsAnd PressureVessel Viewing Provisions".
NOTE: This revision constitutes a complete reissue.

SUMMARY This revision is issued to correct Paragraph I.A.1, "Airplanes Affected", and to add LY to the effectivity. Airplanes modified per theprevious releases of this bulletin do not require additional work.
A revision bar in the leftmargin along with this revision number and date indicatesa change. Absence of a revision bar on a page bearing a "revised"notice means only that existing copyhas been moved or that aminor typographical error has been corrected.

REVISION HISTORY Original Issue: Revision 1: August 25, 1978 September 7, 1979SUBJECT:SLIDE/RAFT PACKBOARD IMPROVEMENTSAND PRESSURE VESSEL VIEWING PROVISIONS

BACKGROUND
One operator has recently reported finding several slide rafts, on one recently delivered airplane, with small punctures in the inflatable material immediately adjacent to the fasteners which retain the double hook packboard latch. The small punctures are believed to be the result of the slide raft inflatable material contacting the several exposed cap nuts on the inside of the packboard used to install the double hook packboard latch.
In addition, the operator reported several instances of slide/raft packboard fitting inserts loosening and breaking out of the fiberglass base. Boeing has also received a report of one of the hooks on the double hook latch separating, resulting in only one hook actually latching and carrying the load. 

### ATA:2569 NO: 747-25-2425 DATE: August 25, 1978 REVISION 1: September 7, 19

ACTION (PRR75524-55 & -56) Replace packboard cap nutswit flush type inserts. Reinforc lower packboard support bracke attachments. Install ne packboard latch hooks. Modif main entry door lower liner an packboard by adding aligne viewing port. Remove "PRESS T TEST" circuit panel and remov associated circuitry.
EFFECTIVITY
Line No. -- 154, 158, 160, 194 198, and 260 thru 343, except lin number 272, JL airplanes, U airplanes, and 747Fairplanes.
MANPOWER
Total Manhours

- 20 Airplane Down-Time

- 10 Hours Pe Door
MATERIAL INFORMATION

Numerous reports of false indications of low pressure in the pressure vessel have been received from four operators. Gauges containing a remote indicating switch for operation of the low pressure warning light have been susceptible to corrosion. A means fordirect viewing of thepressure vessel pressure gauge has therefore been developed in order to delete the warning light function. Kit
63B12678-1 63B12678-2 63B12678-5 63B12678-6 63B12678-7 Price*
No Charge No Charge No Charge No Charge No Charge
* See Paragraph I.F. for term and conditions applicable topric anddelivery information.

Summary Page 1 ofAug 25/78 Summary Page 2 of 2

### ATA 

## SYSTEM:2569 NO: 747-25-2425 

### DATE: REVISION 1: August 25, 1978 September 7, 1979

SUBJECT: SLIDE/RAFT PACKBOARD IMPROVEMENTSAND PRESSURE VESSEL VIEWING PROVISIONS

I. Planning Information
A. Effectivity
1. Airplanes Affected
An equivalent change will be incorporated in production in accordance with PRR 75524-55 and 75524- 56 on applicable airplanes other than those listed below.



### CUSTOMER& CUSTOMER NO. MODEL & SERIES MFG. SERIAL NO. REGISTRY NO.

AF (AIR FRANCE) RA266 RD651 RD652 RD653
AI (AIR INDIA) RA725 RA726 RA727 

### 747-128 747-228B 747-228B 747-228B
747-237B 747-237B 747-237B

Aug 25/78 747-25-2425 REV. 1: Sep 7/79 Page 1 of 20 

### 21141 21326 21429 

### 21537
21182 21446 21473 N40116 F--BPVS F-BPVT N1L252E

VT-EDU VT-EFJ VT-EFO

### CUSTOMER& CUSTOMER NO. MODEL & SERIES MFG. SERIAL NO. REGISTRY NO.

AR (ARGENTINAS) RD121 

### 747-2878

AT (ROYAL AIRMOROC) RD671 747-2868

BA (BRITISHAIRWAYS ) RA318 747-136 RD131-RD134 747-236B RD135&RD136 747-236B RD137 747-236B 21213 21238 21350 21536 THRU 21241 AND 21351 G-BDPV G-BDXA G-BDXE G-BDXG THRU G-BDXD AND G-BDXF

CI (CHINA AIRLINES) RD551 747-209B RG171 7475P-09
GN (AIRGABON) RD661 747-2Q2B

IA (IRAQI AIRWAYS) RJ301&RJ302 747-270C

IR (IRANNATIONAL AIRLINES) RD681&RD682 747-2868 RG1OI&RG102 747SP-86 RG103 747SP-86

KL (ROYALDUTCH) RD601&RD602 747-2068 RD603 747-2068

KU (KUWAITAIRWAYS CORP.) RD201&RD202 747-269B 21180 AND

21217AND 20998AND 21093

21110AND 21547

21541 AND 21181

21218 20999

21111

21542 YI-AGN AND

EP-IAG AND EP-IAA AND EP-IAC

PH-BUH AND PH-BUK

9K-ADA AND

LH (LUFTHANSA) RD641&RD642 RD643 RD644 

### 747-230B 747-2308 747-230B 21220 AND 

### 21380 21588 21221 D-ABYJ AND D-ABYL. D-ABYM



### Aug 25/78 REV. 1: Sep 7/79 

### 747-25-2425 2 21189 LV-LZD



### 21615 CN-RME



### 21454 21300 B-1864 B-1862



### 21468 F-ODJG

YI-AGO

EP-IAH EP-IAB

PH-BUI

9K-ADB

D-ABYKCUSTOMER & CUSTOMERNO. MODEL & SERIES MFG. SERIAL NO. REGISTRY NO.

LY (EL AL ISRAEL) RJ152 

### 747-258C
ME (MIDDLE EAST AIRLINES) RD621-RD623 747-2B4B 21097 THRU21099 OD-AGH THRU OD-AGJ
PA (PAN AMERICAN) RGUOI-RG005 

### RG06&RG07 RG091 QF (QANTAS) -RB010

RBO11 RB012 RD513&RD514 RD515&RD516 RD531 747SP-21 747SP-21 747SP-21

747-238B 747-238B 747-238B 747-238B 

### 747-238B 747-238B 21022 21547 21441 THRU21026 AND 21548



### 21054 21140 21237 21352 AND 21657 AND 

### 21354 N530PA THRUN534PA N537PA AND N538PA N536PA

VH-EBJ VH- EBK 

### VH-IBL 21353 VH-EBM AND 21658 VH-EBO AND VH-ECA VH-EBN VH-EBP

RB (SYRIAN ARAB AIRLINES) RG141&RG142 747SP-94
RJ (ROYAL JORDANIAN) RDb91&RD692 747-2D3B 21174 AND 21175

21251 AND 21252 YK-AHA AND YK-AHB

JY-AFA AND JY-AFB SA (SOUIH AFRICAN) RB071-RB073 747-244B 

### RB074&R075 747-244B RG121-RG123 747SP-44 RG124&RG125 747SP-44 RG126 747SP-44 20237 20556 21132 21253 21263 THRU AND THRU AND 20239 20557 21134 21254 ZS-SAL THRU ZS-SAO AND ZS-SPA THRU ZS-SPD AND 

### ZS-SPF
SK (SCANDINAVIAN) RD591 

### 747-283B SQ (SINGAPORE AIRLINES LTD) RD045 747-212B RDO46 747-212B RD047 747-212B

Aug 25/78 REV. 1:Sep 7/79 

### 747-25-2425 3 

### 21594 4X-AXF

ZS-SAN ZS-SAP 

### ZS-SPC ZS-SPE



### 21381 LN-RNA

21162 21316 21439 9V-SQE 9V-SQF 9V- OGCUSTOMER & CUSTOMER NO. MODEL & SERIES MFG. SERIAL NO. REGISTRY NO.

SV (SAUDI ARABIAN EXEC) 

### RH101 747SP-68 21652

WD (WARDAIR) RD171 

### 747-211B 21516

Aug 25/78 REV. 1:Sep 7/79 

### 747-25-2425 4 HZ-HM1

C-GXRA2. Spares Affected
The following is a composite list of spares affected by this change. Operators should review their spares procurement to establish existence of any listed parts in their spares inventory. See Paragraph II.D. Existing Parts Accountability for disposition.
Part Number 

### 60B50082-10 60B50082-11 60B50082-12 60B50082-13 60B50082-14 60B50082-15 60B50082-67 60B50082-68 60B50082-69 

### 60B50082-70 60B50082-71 60B50082-72 60B50082-109 60B50082-110 60B50082-111 60B50082-112 60B50082-113 60B50082-114 60B50082-143 60B50082-144 60B50082-145 

### 60B50082-146 60B50082-147 60B50082-147 60B50082-171 60B50082-172 60B50082-173 

### 60B50082-174 60B50082-175 60B50082-176 

### 60B50082-185 60B50082-186 60B50082-187 

### 60B50082-188 60B50082-189 60B50082-190 60B50082-191 

### 60B50082-192 Nomenclature Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/Raft Assembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/Raft Assembly Slide/Raft Assembly Slide/RaftAssembly Slide/Raft Assembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/Raft Assembly

Aug 25/78 747-25-2425 5PartNumber Nomenclature
60B50082-193 60B50082-194 60B50082-195 60B50082-196 60B50082-197 60B50082-198 60B50082-199 60B50082-200 60B50082-201 60B50082-202 60B50082-203 60B50082-204 60B50082-205 60B50082-206 60B50082-213 60B50082-214 60B50082-215 60B50082-216 60B50082-217 60B50082-218 60B50082-219 60B50082-220 60B50082-239 60B50082-240 60B50082-241 60B50082-242 60B50082-243 60B50082-244 60B50082-245 60B50082-246 60B50082-247 60B50082-248 60B50082-249 60B50082-250 60B50082-251 60B50082-252 60B50082-255 60B50082-256 60B50082-257 60B50082-258 60B50082-259 60B50082-260 Slide/RaftAssembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/RaftAssembly Slide/Raft Assembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/Raft Assembly Slide/RaftAssembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/RaftAssembly Slide/Raft Assembly Slide/RaftAssembly Slide/Raft Assembly Slide/Raft Assembly Slide/RaftAssembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly Slide/Raft Assembly

Aug 25/78 747-25-2425 6Nomenclature
60B50082-261 60B50082-262 60B50082-263 60B50082-264 60B50082-265 60B50082-266 60B50082-267 60B50082-268 60B50082-271 60B50082-272 60B50082-273 60B50082-274 

### 60B50082-275 60B50082-276 60B50082-277 60B50082-278 60B50082-279 60B50082-280 60B50082-281 60B50082-282 60B50082-283 60B50082-284 60B50082-285 60B50082-286 60B50082-287 60B50082-288 60B50082-289 60B50082-290 Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/Raft Slide/RaftAssembly Assembly Assembly Assemibly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly Assembly

Aug 25/78 747-25-2425 7 PartNumberB. Reason This modification is to reduce abrasion and punctures of slide rafts from capnutswithin the packboard, to provide
an improved structural attachment for the lowerpackboard support brackets, and to provide an improved means of retaining the packboard latch hooks together. In addition, thismodification is to provide a means for direct determination of status of slide/raft inflation system pressure vessels.
One operator has recently reported finding several slide rafts, on one recently delivered airplane, with small punctures in the inflatable material immediately adjacent to the fastenerswhich retain the double hook packboard latch. The small punctures are believed to be the result of the slide raft inflatable material contacting the several exposed cap nuts on the inside of thepackboard used to install thedouble hook packboard latch.

In addition, the operator reported several instances of slide/raft packboard fitting inserts loosening and breaking out of the fiberglass base. Boeing has also received a report of one of thehooks on the double hook latch separating resulting in only one hook actually latching and carrying the load.

Numerous reports of false indications of lowpressure in the pressure vessel have been received from four operators. Gauges containing a remote indicating switch for operation of the lowpressure warning light have been susceptible to corrosion. A means for direct viewing of the pressure vessel pressure gauge has therefore been developed.



### Aug25/78 747-25-2425 8

### C. Description

Aug 25/78 

## To eliminate problems with the present remotewarning pressure gauge and toprovide a packboard installation of improved design, the operator may incorporate the following design changes. 1. Replace cap nutswith an insert bar toprotect slide raft material from abrasion. 2. Provide improved structural attachment for lower packboard support brackets. 3. Install a new improvedpackboard latch.
4. Install cutouts in lower door lining and packboard to permit direct viewing of pressure vessel pressure gauge.
Because each of the bulletins listed in the following tablerequires unpacking of slide/raft assemblies, it is suggested that all of the listed bulletins be accomplished concurrently on commonly affected airplanes and/or slide/raft assemblies. Concurrent incorporationof Boeing Service Bulletin 747-25-2425 and B.F. Goodrich Service Bulltin 25-048 and 25-049 is required.

747-25-2425 9TABLE I Bulletins Affecting Slide/Raft Assemblies



### Aug25/78 747-25-2425 

### 10D. Approval The modification described herein has beenapproved by the FAA Designated Engineering Representative at the Boeing CommercialAirplane Company.
E. Manpower Approximately 20man-hours are required to accomplish this modificationper door. The following breakdown of manpower requirements is suggestedas a guide to assist operators in planning and accomplishing this modification. This estimate is for direct labor only and assumes an experienced crew. It does not include setup, planning, familiarization, tool acquisition, or lost time. Thus, operators should factor this estimate as necessary basedon their own experience.

TABLE II Man-Hour Estimate PerAirplane

Aug 25/78 747-25-2425 11F. Material

- Price andAvailability
The kits identified in Paragraphs II.A. and II.B. may be obtained from Boeing within the terms and conditions defined below. After expiration of thequotation, price and delivery data will beprovided upon request.
The delivery quotation below indicates the date when initial kits will be available. When source capacity is limited and tooling or material availability is thepacing factor, customer purchase orders will receive an allocation, from the available quantities, based on receipt date of purchase order by the Spares Department and based on operator's planned modification schedules. It is therefore requested that customer purchase orders include planned dates of incorporation. When initial quantities are depleted, additional kits will be available

as indicated in theROLT (ReorderLead Time) column. Initial KitNumber Description Delivery ROLT Unit Price

63B12678-1 Kit,Top Sep 27/78 26Wks. No Charge 63B12678-2 Kit, Door Sep 27/78 26 Wks. No Charge 63B12678-5 Kit, Door Sep 27/78 26 Wks. No Charge 63B12678-6 Kit,Door Sep 27/78 26Wks. No Charge
No. 5 63B12678-7 Kit,Top Sep 27/78 26Wks. No Charge

Date August 25, 1978
The prices quoted are subject to the terms and conditions of Boeing's standard purchase order acknowledgement. Quotations are subject toacceptance within 120days from date hereon. Any itemswhich are offered at "No Charge"

are subject to charge after expiration of the 120-day period. Pricesquoted in United States Dollars. Terms: Net 30 days.
Address purchase orders and correspondence pertaining to thisquotation to Director of Spares, and refer to this service bulletin number.

Aug 25/78 747-25-2425 12G. Tooling

- Price andAvailability
None
H. Weight and Balance
Applicability Basic 747-SP Change in Basic Weight (Pounds) 

### +2.5 

## +2.5 Change in Basic Moment (Pound-Inches) +3.275 

### +3161

I. References
1. Existing Data:

a. Engineering Change Memo PRR 75524-55 and 75524- 56
b. 747 Maintenance Manual Subject 25-69-01

c. 747Wiring Diagram Manual 25-66-11 2. New or revised data supplied in support of this bulletin: Drawing No. 

### 63B12678

65B65632

Aug 25/78 

## Sheet

1
2
1 DCN ADCN Title
A 1 Kit, Slide/Raft DirectViewing Pressure Gauge A 

### Kit, Slide/Raft GaugeAccess DoorInstl., LowerLiner
3. Process Data: Boeing Process Specifications that are listedon drawings supplied in support of this bulletin are not detailed in this bulletin since they are common practices which can be accomplished in accordance with operator's normal procedures.

747-25-2425 13J. Publications Affected
The modification described herein affects the following publications: Publication Chapter/Section
747Maintenance Manual

................. 25-69
747 Overhaul Manual.................... 25-65
747Wiring Diagram Manual.............. 25-66
747 Illustrated Parts Catalog.......... 25-69

Aug 25/78 747-25-2425 14II. Material Information
A. Parts Required PerAirplane
The following kit assemblies may be obtained fromBoeing
as noted in Paragraph I.F.: NOTE: Top kit assembly isdivided into sub kits for convenience of installation. Only one top kit is required tomodify each airplane.
63B12678

- KIT, DIRECTVIEW GAGE PACKBOARD, SLIDE/RAFT

-7 -1 Quantity 

### Part Number Nomenclature 

### 63B12678-1(*) 

### 63B12678-7(*) 63B12678-2(*) 63B12678-5(*)


### 63B12678-6(*) 

## Kit, Slide/RaftDirect View Pressure Gauge 

### Packboard (Basic Airplane) 

## Kit, Slide/RaftDirect View Pressure Gauge Packboard (747-SPAirplane) Kit, Door No. 1, 2, and 4 Slide/Raft DirectView Gauge Packboard Kit, Door No. 1, 2, 3, and 4 Slide/RaftDirectView Gauge Packboard Kit, Door No. 5Slide/ Raft DirectView Gauge Packboard

Aug 25/78 (*) See Table III for color code suffix.
See kit drawings suppliedwith this bulletin for complete kit parts lists and list of all operator furnished materials.

747-25-2425 15 6

8

2B. Parts Required to Modify Spares Quantity PartNumber Nomenclature

1 1 1

Kit Color
Customer 63B12678-2 63B12678-5 63B12678-6 Kit, Door (BasicAirplanes) Kit, Door (SPAirplanes) Kit,Door No. 5

(BasicAirplanes)

TABLE III Code Identification



### 747-100, -200 747-SP
63B12678-1B 63B12678-1A 63B12678-1A 63B12678-1A 63B12678-1A 63B12678-lB 63B12678-1A 63B12678-1B 63B12678-1A 63B12678-1A 63B12678-1A 63B12678-1A 63B12678-1C 63B12678-1A
63B12678-1A
63B12678-1A 63B12678-1A 63B12678-1A 63B12678-1A 63B12678-1A 63B12678-7A

63B12678-7A



### 63B12678-7A
63B12678-7A
63B12678-7A

63B12678-7A 63B12678-7A

C. Special Tools and Equipment Required

None
D. Existing Parts Accountability
See kit drawings suppliedwith this bulletin for complete disposition of all existingparts and assemblies.

Aug 25/78 

### 747-25-2425 16 (RJ152) AF AI AR AT BA BO CI GN IA IR KL KU LH ME PA QF RB RJ SA SK SQ SV WDIII.Accomplishment Instructions
NOTE: The following paragraphs outline the general accomplishment instructions and detailed test requirements. The suggested sequence of operations and detailed accomplishment instructions are indicatedby circle notes on the figures and drawings suppliedwith this bulletin.
A. Remove slide assembly fromdoor and remove inflatable from packboard (Ref:747Maintenance Manual Subject 25-69-01). B. Rework door-packboard pivot bracket area per Drawing 63B12678, Sheet 2, ViewAll-1, A8, and B8. Revise teflon trim in pivot bracket area per Sheet 2,View 1A5, 2A5, 1B8, and 2B8.
C. Make cutout in packboard per Drawing 63B12678, Sheet 2, View B9.
D. Install new latch channel and stiffener bracket on packboard per Drawing 63B12678, Sheet 1,View B8. E. Install new latch on top of packboard per Drawing 63B12678, Sheet 1,View C10.
F. Disconnect electrical connector from PRESSTO TEST panel assembly. Remove panel assembly and remove wiring per Figure 1. Install cover panel over opening inmiddle liner assemblyper Drawing 63B12678, Sheet 2,ViewB9: G. Enlargepivot bracket hooksper Drawing 63B12678, Sheet 2, View B10.
H. Cut out opening in door lower liner and install liner assemblyper Drawing 65B65632, Sheet 1,View I. I. Restore packboard, slide assembly and liners to normal configuration (Ref: 747Maintenance Manual Subject 25-69- 01).

Aug 25/78 747-25-2425 17FIGURE 1. DOORWIRING DELETION 

### Aug 25/78 

### 747-25-2425
18FIGURE 1. DOORWIRING DELETION 

### Aug 25/78 

### 747-25-2425 19747-SP AIRPLANES
Door W/B No. Terminal Strip Ground Stud Packboard Equip. No. Panel Equip. No.
TB205 GD6338-DC TB207 GD2233-DC TB209 GD6430-DC TB211 GD1731-DC TB206 GD6336-DC TB208 GD2231-DC TB210 GD6436-DC TB212 GD1757-DC
BASIC AIRPLANE TB205 TB207 TB211 TB213 TB206 TB208 TB212 TB214 GD6338-DC GD6342-DC GD6346-DC GD6350-DC GD6336-DC GD6340-DC GD6344-DC GD6348-DC



### Aug 25/78 747-25-2425 20 1L 2L 3L 4L 1R 2R 3R 4R

1L 2L 4L 5L 1R 2R 4R 5R W2078 W2082 W2092 W2086 W2076 W2080 W2094 W2084

W2078 W2082 W2086 W2090 W2076 W2080 W2084 W2088 M295 M296 M455 M297 M291 M292 M454 M293

M295 M296 M297 M298 M291 M292 M293 M294 M910 M912 M918 M913 M903 M904 M916 M906

M910 M912 M913 M914 M903 M904 M906 M908