Commercial 

Airplanes 757

Service Bulletin

SPECIAL ATTENTION

Number: 757-24-0105

Original Issue: September 30, 2004

Revision 5: July 30, 2009

ATA System: 2420

SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power

Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Slat Auxiliary Track.

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.

ECCN: 9E991

BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET

Copyright © 2004 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Unpublished Work - All Rights Reserved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, 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.

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5.0
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BOEING SERVICE BULLETIN 757-24-0105

BLANK PAGE
Table of Contents

Revision Transmittal Sheet ............................................ 5

Summary ...................................................... 7

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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: . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 20

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 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: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 23

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

FIGURE 1: GROUP 1, CONFIGURATION 1, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION. . . . . 30

FIGURE 2: GROUP 1, CONFIGURATION 1, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION. . . . . 33

FIGURE 3: GROUP 1, CONFIGURATION 2, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION. . . . . 36

FIGURE 4: GROUP 1, CONFIGURATION 2, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION. . . . . 39

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BOEING SERVICE BULLETIN 757-24-0105
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BOEING SERVICE BULLETIN 757-24-0105

BLANK PAGE
Commercial 

Airplanes 757

Service Bulletin

SPECIAL ATTENTION

Revision Transmittal Sheet Number: 757-24-0105

Original Issue: September 30, 2004

Revision 5: July 30, 2009

ATA System: 2420

SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power

Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Slat Auxiliary Track.

This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION

More work is necessary on airplanes changed as shown in the original issue or Revisions 1,2,3 or 4 of this

service bulletin. Airplanes moved from Group 2 to Group 1, Configuration 2 should make sure that the clamp is

installed on the lower bracket on the left wing as shown in Figure 3.

REASON FOR REVISION

Revision 5 is sent to change the Group and Configuration data, to add maintenance zones, and to add another

optional fastener to plug the hole in the bracket.

These sections were changed:

1. Summary, Action: Added Configuration 1 and Configuration 2 to Group 1 airplanes.

2. Paragraph 1.A.1. Airplanes: Changed from Group 1 and Group 2 to Group 1, Configuration 1 and Group

1, Configuration 2.

3. Paragraph 1.C., Reason: Added Configuration 1 to airplane Group 1.

4. Paragraph 1.D. Description: Added Configuration 1 and Configuration 2 to Group 1 airplanes.

5. Paragraph 1.D. Description: Added Affected Maintenance Zones.

6. Paragraph 1.F. Approval: Changed paragraph letter for Alternate Method Of Compliance.

7. Paragraph 2.C.2., Parts and Materials Supplied by the Operator: Added optional blind rivet, part number

NAS1398B8AB2. Also corrected the part number of the collar to read BACC30M8U.

8. Figure 1, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part numbers,

and corrected the part number of the collar to read BACC30M8U. Added note (f) at the bottom of the step

table.

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9. Figure 2, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part numbers,

and corrected the part number of the collar to read BACC30M8U. Added note (f) at the bottom of the step

table.

10. Figure 3, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part numbers,

and corrected the part number of the collar to read BACC30M8U. Added note (f) at the bottom of the step

table.

11. Figure 4, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part numbers,

and corrected the part number of the collar to read BACC30M8U. Added note (f) at the bottom of the step

table.

The data given in Information Notice 757-24-0105 IN 02 is included in this revision.

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

Original Issue: September 30, 2004

Revision 1: June 23, 2005

Revision 2: April 20, 2006

Revision 3: October 03, 2006

Revision 4: January 04, 2008

Revision 5: July 30, 2009

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BOEING SERVICE BULLETIN 757-24-0105
Commercial 

Airplanes 757

Service Bulletin

SPECIAL ATTENTION

Summary Number: 757-24-0105

Original Issue: September 30, 2004

Revision 5: July 30, 2009

ATA System: 2420

SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power

Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Slat Auxiliary Track.

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

CONCURRENT REQUIREMENTS

None.

BACKGROUND

The changes in this service bulletin will prevent possible chafe damage between the number 5 and 6 inboard

slat auxiliary slat tracks and the power feeder wire bundles W3312 and W3412. The attach points for the support

clamps for the power feeder wires in each wing are changed to get the necessary clearance for the power feeder

wires.

One operator told Boeing they found that the power feeder wire bundle had chafed against the number 6 auxiliary

slat track at Front Spar Station (FSS) 148.90. On one airplane two of the three phases of the power feeder wire

bundle were worn through to the conductor. The electrical cables had arced against the auxiliary slat track and

caused damage to the auxiliary slat track and power feeder wire. This condition can result in a possible ignition

source for leaked flammable fluids or a generator trip with loss of power from that generator.

The attach bracket for the power feeder wire bundle clamp at FSS 148.90 has two holes where the power feeder

wire bundle can be installed. The support clamp for the damaged power feeder wires was attached to the upper

hole of the attach bracket. It was found that the lower hole of the attach bracket can be used to give sufficient

clearance between the power feeder wire bundle and the auxiliary slat track.

This service bulletin gives instructions to do a general visual inspection of the power feeder wire bundles W3312

and W3412 for chafe damage and to make sure that the support clamps are correctly installed. Support clamps

for the power feeder wire bundles are found in the left and right wings at FSS 148.90 near the number 5 and 6

inboard auxiliary slat tracks. Airplane group 1, line numbers 1 - 88 should use the upper hole of the 271N6178-5

bracket to attach the left power feeder wire bundle. Rivets are installed in the open holes that are not used in

the brackets to prevent use of the holes. If Service Letter 757-SL-24-072 has been done, install rivets in the

open holes that are not used in the attach brackets. A similar change was made on line number 1024 and

subsequent airplanes before they were delivered.

The related 757-300 bulletin is 757-24-0106.

Service Letter 757-SL-24-072 is also related to this service bulletin.

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Boeing Service Related Problem (SRP) 757-SRP-24-0109 is related to this service bulletin.

ACTION

For Group 1, Configuration 1 airplanes: get access to the support clamps for the power feeder wire bundles

W3312 and W3412 at FSS 148.90 in the left and right wings. Do a general visual inspection of each power

feeder wire bundle. Repair damaged wires as necessary. Make sure that the support clamp on the left wing

power feeder wire bundle (W3312) is installed in the upper hole of the 271N6178-5 bracket. Make sure that the

lobe of the clamp is installed in the up position. Make sure that the cable support on the right wing power feeder

wire bundle (W3412) is installed in the lower hole of the 287N1401-306 support bracket. Rivet plug the holes in

the brackets that are not used to prevent use, this includes airplanes that have done Service Letter 757-SL-24-072.

For Group 1, Configuration 2 airplanes: get access to the support clamps for the power feeder wire bundles

W3312 and W3412 at FSS 148.90 in the left and right wings. Do a general visual inspection of each power

feeder wire bundle. Repair damaged wires as necessary. Make sure that the support clamps for the left and

right power feeder wire bundles are installed in the lower hole of the 287N1401-306 support bracket. Rivet plug

the holes in the brackets that are not used to prevent use, this includes airplanes that have done Service Letter

757-SL-24-072.

EFFECTIVITY

757-200, 757-200CB and 757- 200PF airplanes. Refer to Service Bulletin Paragraph 1.A. 1 for effectivity.

COMPLIANCE

Federal Aviation Administration (FAA) Airworthiness Directive FAA AD 2007-03-01

Boeing recommends that operators do the changes in this service bulletin in 24 months or less from the initial

release date of this service bulletin.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are available for airplanes in warranty as of September 5, 2003. Please refer to

Paragraph 2.B., Industry Support Information.

MANPOWER

Airplanes Total Task Hours Elapsed Hours

Group 1, Config- 8.0 4.75

uration 1

Group 1, Config- 7.5 4.25

uration 2

MATERIAL INFORMATION

Operator Supplied Parts/Materials.

Refer to Paragraph 2.A., Material - Price and Availability.

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BOEING SERVICE BULLETIN 757-24-0105
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BOEING SERVICE BULLETIN 757-24-0105

BLANK PAGE
Commercial 

Airplanes 757

Service Bulletin

SPECIAL ATTENTION

Number: 757-24-0105

Original Issue: September 30, 2004

Revision 5: July 30, 2009

ATA System: 2420

SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power

Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Slat Auxiliary Track.

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D624N001 Part 3 for Airplane Variable Number, Line

Number, and Serial Number data.

This service bulletin is for the airplanes shown below.

GROUP CONFIGURATION DESCRIPTION

1 - 757-200s from line numbers 0001 through 1016.

Airplanes that have two attach brackets on the left wing and one

attach bracket on the right wing.

1

Airplanes that have one attach bracket on the left wing and one attach

bracket of the right wing.

2

Airplane Models:

757-200, 757-200CB, 757-200PF

Variable Number Group

NA001 - NA028 1

NA191 - NA199 1

NA201 - NA239 1

NA301 - NA305 1

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Variable Number Group

NA341 - NA352 1

NA391 - NA399 1

NA401 - NA408 1

NA441 - NA447 1

NA501 - NA586 1

NB001 - NB004 1

NB021 - NB023 1

NB036 - NB041 1

NB051 - NB053 1

NB061 - NB073 1

NB079 1

NB131 - NB148 1

NB161 - NB162 1

NB166 - NB168 1

NB201 - NB204 1

NB221 - NB228 1

NB230 1

NB236 1

NB239 1

NB261 - NB267 1

NB291 - NB299 1

NB301 - NB302 1

NB311 - NB312 1

NB321 - NB331 1

NB421 - NB438 1

NB446 1

NB451 - NB454 1

NB501 - NB523 1

NB561 1

NB571 1

NB581 - NB583 1

NC001 - NC033 1

NC041 - NC042 1

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BOEING SERVICE BULLETIN 757-24-0105
Variable Number Group

NC051 - NC052 1

NC056 - NC062 1

NC066 - NC084 1

NC091 - NC094 1

NC151 1

NC161 1

NC901 - NC951 1

NC971 - NC974 1

ND001 - ND007 1

ND011 - ND059 1

ND111 - ND113 1

ND161 - ND199 1

ND201 - ND203 1

ND221 - ND225 1

ND241 - ND248 1

ND301 - ND322 1

ND401 1

ND891 1

ND895 1

NE001 - NE008 1

NE011 - NE088 1

NE091 - NE094 1

NE141 - NE150 1

NE161 - NE177 1

NE201 - NE204 1

NE301 - NE302 1

NE311 - NE325 1

NN001 - NN002 1

NN051 - NN052 1

NP901 - NP904 1

NS601 - NS616 1

NT001 - NT009 1

NT201 - NT202 1

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BOEING SERVICE BULLETIN 757-24-0105
Variable Number Group

NT231 - NT234 1

NT237 - NT240 1

NT242 1

NT245 - NT248 1

NT281 - NT289 1

NT341 - NT347 1

NT351 - NT360 1

NT371 - NT373 1

NT375 - NT379 1

NT381 - NT386 1

NT401 - NT409 1

NT411 - NT412 1

NT426 - NT427 1

NT431 - NT432 1

NT436 - NT438 1

NT441 - NT442 1

NT446 1

NT701 - NT769 1

NT791 - NT796 1

NT861 - NT862 1

NT881 - NT885 1

NT901 - NT916 1

NT971 - NT985 1

NU031 - NU038 1

2. Spares Affected

None.

B. Concurrent Requirements

None.

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BOEING SERVICE BULLETIN 757-24-0105
C. Reason

The changes in this service bulletin will prevent possible chafe damage between the number 5 and 6

inboard slat auxiliary slat tracks and the power feeder wire bundles W3312 and W3412. The attach

points for the support clamps for the power feeder wires in each wing are changed to get the necessary

clearance for the power feeder wires.

One operator told Boeing they found that the power feeder wire bundle had chafed against the number

6 auxiliary slat track at Front Spar Station (FSS) 148.90. On one airplane two of the three phases of

the power feeder wire bundle were worn through to the conductor. The electrical cables had arced

against the auxiliary slat track and caused damage to the auxiliary slat track and power feeder wire.

This condition can result in a possible ignition source for leaked flammable fluids or a generator trip

with loss of power from that generator.

The attach bracket for the power feeder wire bundle clamp at FSS 148.90 has two holes where the

power feeder wire bundle can be installed. The support clamp for the damaged power feeder wires

was attached to the upper hole of the attach bracket. It was found that the lower hole of the attach

bracket can be used to give sufficient clearance between the power feeder wire bundle and the auxiliary

slat track.

This service bulletin gives instructions to do a general visual inspection of the power feeder wire bundles

W3312 and W3412 for chafe damage and to make sure that the support clamps are correctly installed.

Support clamps for the power feeder wire bundles are found in the left and right wings at FSS 148.90

near the number 5 and 6 inboard auxiliary slat tracks. Airplane Group 1, Configuration 1 should use

the upper hole of the 271N6178-5 bracket to attach the left power feeder wire bundle. Rivets are installed

in the open holes that are not used in the brackets to prevent use of the holes. If Service Letter

757-SL-24-072 has been done, install rivets in the open holes that are not used in the attach brackets.

A similar change was made on line number 1024 and subsequent airplanes before they were delivered.

The related 757-300 bulletin is 757-24-0106.

Service Letter 757-SL-24-072 is also related to this service bulletin.

Boeing Service Related Problem (SRP) 757-SRP-24-0109 is related to this service bulletin.

Revision 1 is sent to add optional fastener data because after the initial release of this service bulletin

an operator told Boeing that they cannot easily get the BACR15FTADR5C rivets.

Optional fastener part numbers are added to Paragraph 2.C.2., Parts and Materials Supplied by the

Operator, and to Step 4 of Figures 1, 2, 3 and 4.

Revision 2 is sent to add a spacer part number to the Group 1 and Group 2 Tables given in Paragraph

2.C.3., Parts and Materials Supplied by the Operator.

Figures 1 through 4 are changed to add the spacer data to the applicable steps.

Revision 3 is sent to correct the compliance recommendation, a note in the Parts and Materials Supplied

by the Operator tables, and to add more part number data applicable to the spacer.

These sections were changed:

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BOEING SERVICE BULLETIN 757-24-0105
1. Paragraph 1.E., Compliance; compliance recommendation is changed to add the word "initial" in

the sentence.

2. Paragraph 2.C.2., Parts and Materials Supplied by the Operator; Note (b) is changed to add the

word "not" and to add more part number data applicable to the spacer.

3. Figures 1 through 4, Step 5, the spacer data is changed to give the complete part number and to

give an optional spacer part number.

4. Figure 1, the illustration is changed to show the correct location of the 271N6178-5 bracket.

Revision 4 is sent to correct a part number and to add AD data.

These sections were changed:

1. Summary and Paragraph 1.E., Compliance, and Paragraph 1.F., Approval; added AD data.

2. Paragraph 2.C.2., Parts and Materials Supplied by the Operator, added more optional fastener

part number.

3. Paragraph 3.B., Work Instructions, Step 7 and Step 8; added the inspection location.

4. Paragraph 3.B., Work Instructions; added Step 13.

5. Figures 1, 2, 3, and 4; corrected spacer part number, added more clamp data, and added more

optional fastener part number.

The data given in Information Notice 757-24-0105 IN 01 is not included in this revision because the

data contained in 757-24-0105 IN 01 was incorrect.

Revision 5 is sent to change the Group and Configuration data, to add maintenance zones, and to add

another optional fastener to plug the hole in the bracket.

These sections were changed:

1. Summary, Action: Added Configuration 1 and Configuration 2 to Group 1 airplanes.

2. Paragraph 1.A.1. Airplanes: Changed from Group 1 and Group 2 to Group 1, Configuration 1 and

Group 1, Configuration 2.

3. Paragraph 1.C., Reason: Added Configuration 1 to airplane Group 1.

4. Paragraph 1.D. Description: Added Configuration 1 and Configuration 2 to Group 1 airplanes.

5. Paragraph 1.D. Description: Added Affected Maintenance Zones.

6. Paragraph 1.F. Approval: Changed paragraph letter for Alternate Method Of Compliance.

7. Paragraph 2.C.2., Parts and Materials Supplied by the Operator: Added optional blind rivet, part

number NAS1398B8AB2. Also corrected the part number of the collar to read BACC30M8U.

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BOEING SERVICE BULLETIN 757-24-0105
8. Figure 1, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part

numbers, and corrected the part number of the collar to read BACC30M8U. Added note (f) at the

bottom of the step table.

9. Figure 2, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part

numbers, and corrected the part number of the collar to read BACC30M8U. Added note (f) at the

bottom of the step table.

10. Figure 3, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part

numbers, and corrected the part number of the collar to read BACC30M8U. Added note (f) at the

bottom of the step table.

11. Figure 4, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part

numbers, and corrected the part number of the collar to read BACC30M8U. Added note (f) at the

bottom of the step table.

The data given in Information Notice 757-24-0105 IN 02 is included in this revision.

D. Description

For Group 1, Configuration 1 airplanes: get access to the support clamps for the power feeder wire

bundles W3312 and W3412 at FSS 148.90 in the left and right wings. Do a general visual inspection

of each power feeder wire bundle. Repair damaged wires as necessary. Make sure that the support

clamp on the left wing power feeder wire bundle (W3312) is installed in the upper hole of the 271N6178-5

bracket. Make sure that the lobe of the clamp is installed in the up position. Make sure that the cable

support on the right wing power feeder wire bundle (W3412) is installed in the lower hole of the

287N1401-306 support bracket. Rivet plug the holes in the brackets that are not used to prevent use,

this includes airplanes that have done the requirements of Service Letter 757-SL-24-072.

For Group 1, Configuration 2 airplanes: get access to the support clamps for the power feeder wire

bundles W3312 and W3412 at FSS 148.90 in the left and right wings. Do a general visual inspection

of each power feeder wire bundle. Repair damaged wires as necessary. Make sure that the support

clamps for the left and right power feeder wire bundles are installed in the lower hole of the

287N1401-306 support bracket. Rivet plug the holes in the brackets that are not used to prevent use,

this includes airplanes that have done the requirements of Service Letter 757-SL-24-072.

The changes in this service bulletin will not change the Engine Indication and Crew Alerting System

(EICAS).

Revision 1 - No more work is necessary on airplanes changed as shown in the initial release of this

service bulletin.

Revision 2 - No more work is necessary on airplanes changed as shown in the initial release or Revision

1 of this service bulletin.

Revision 3 - No more work is necessary on airplanes changed as shown in the Revision 2 of this service

bulletin.

Revision 4 - No more work is necessary on airplanes changed as shown in the Revision 3 of this service

bulletin.

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BOEING SERVICE BULLETIN 757-24-0105
Revision 5 - More work is necessary on airplanes changed as shown in the original issue or Revisions

1,2,3 or 4 of this service bulletin. Airplanes moved from Group 2 to Group 1, Configuration 2 should

make sure that the clamp is installed on the lower bracket on the left wing as shown in Figure 3.

The work in this service bulletin is done in the maintenance zone(s) given below.

Affected Maintenance Zones

Model Zone

757-200, 757-200CB, 757- 512, 612

200PF

E. Compliance

Federal Aviation Administration (FAA) Airworthiness Directive FAA AD 2007-03-01 is related to this

service bulletin.

Boeing recommends that operators do the changes in this service bulletin in 24 months or less from

the initial release 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.

This service bulletin has been approved by the FAA. In addition, the Manager of the FAA Seattle Aircraft

Certification Office approves the action (i.e. inspection or modification) defined in this service bulletin

as an alternative method of compliance to the requirements of paragraph (g) of FAA AD 2007-03-01.

All provisions of FAA AD 2007-03-01 that are not specifically referenced in the above statement remain

fully applicable and must be complied with.

G. Manpower

The table below shows an estimate of the task-hours necessary to do this change for each airplane.

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 examine the work

— Time to find the tools.

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BOEING SERVICE BULLETIN 757-24-0105
Group 1, Configuration 1:

Number of Per- Task-Hours Elapsed Hours

sons

Task

Open Access 2 3.0 1.5

Inspect 2 0.50 0.25

Figure 1 1 0.75 0.75

Figure 2 1 0.75 0.75

Close Access 2 3.0 1.5

TOTAL FOR EACH AIRPLANE 8.0 4.75

Group 1, Configuration 2:

Number of Per- Task-Hours Elapsed Hours

sons

Task

Open Access 2 3.0 1.5

Inspect 2 0.50 0.25

Figure 3 1 0.50 0.50

Figure 4 1 0.50 0.50

Close Access 2 3.0 1.5

TOTAL FOR EACH AIRPLANE 7.5 4.25

NOTE: These manpower estimates do not include time to repair any damaged Power Feeder Wires.

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Service Related Problem (SRP) 757-SRP-24-0109.

b. 757 Aircraft Maintenance Manual (AMM) Subject06-44-00, 24-22-00,27-81-00, 32-00-15,

32-00-20, 78-31-00.

c. 757 Structural Repair Manual (SRM) Subject 51-40-02.

d. Boeing Standard Wiring Practices Manual (SWPM)20-10-13.

e. Boeing Service Letter 757-SL-24-072.

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BOEING SERVICE BULLETIN 757-24-0105
f. Boeing Parts Standards Document D-590.

g. Boeing Drawing 65-88770.

h. Boeing Document D624N001, Service Bulletin Index.

2. Data supplied with this Service Bulletin:

None.

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

Drawing Number Title

288N1401 Wire Bundle Instl - L Leading Edge and Front Spar.

288N1402 Wire Bundle Instl - R Leading Edge and Front Spar.

These drawings were used to prepare this service bulletin. These drawings are not necessary to

make the specified changes, and are not supplied with this service bulletin. These drawings may

not be applicable to all airplane configurations or operators.

K. Publications Affected

None.

L. Interchangeability and Intermixability of Parts

Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.

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BOEING SERVICE BULLETIN 757-24-0105
2. MATERIAL INFORMATION

A. Material - Price and Availability

None.

B. Industry Support Information

Boeing warranty remedies are available for 757 airplanes in warranty as of September 5, 2003. For

inspection man-hour reimbursement for airplanes in warranty as of that date, send a warranty claim to

Boeing Commercial Airplanes Group - Warranties. If the condition described in this service bulletin is

found during the inspection for airplanes in warranty as of that date and additional man-hours are

required, send a warranty claim to Boeing Commercial Airplanes Group - Warranties. Please refer to

this service bulletin number and reference the airplane variable numbers in your purchase order.

C. Parts Necessary For Each Airplane

1. Kits/Parts:

None.

2. Parts and Materials Supplied by the Operator:

Group 1, Configuration 1:

Part Number / Specifica- QTY Name Notes

tion

BACR15FT7AD4R5C or 4 Rivet (a)

BACR15BB7AD5C or

BACR15BB7D5C or

BACR15FT7AD5 or

BACR15FT7AD5C or

BACR15FT7D5C or

NASM20470

BACS18AF4 (Optional: 2 Spacer (b)

BACS18AF3)

NAS1398B4AB2 or 4 Fastener (a) (c)

NAS1398B8AB2

BACB30FM8A2 4 Bolt (a) (d)

BACC30M8U 4 Collar (e)

Pressure and Environmental (e)

Sealant

BMS5-95 2 oz

(a) Refer to 757 Structural Repair Manual Chapter 51 for alternative fasteners.

(b) The spacer is necessary only if it is not installed under the clamp.

(c) Optional to BACR15( ) or NASM20470 Rivets or BACB30FM8A2 Bolt.

(d) Optional to BACR15( ) or NASM20470 Rivets or NAS1398B4AB2 or NAS1398B8AB2

Fasteners.

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BOEING SERVICE BULLETIN 757-24-0105
Group 1, Configuration 1:

Part Number / Specifica- QTY Name Notes

tion

(e) Necessary only if BACB30FM8A2 bolt is used.

Group 1, Configuration 2:

Part Number / Specifica- QTY Name Notes

tion

BACR15FT7AD4R5C or 2 Rivet (a) (c)

BACR15BB7AD5C or

BACR15BB7D5C or

BACR15FT7AD5 or

BACR15FT7AD5C or

BACR15FT7D5C or

NASM20470

BACS18AF4 (Optional: 2 Spacer (b)

BACS18AF3)

NAS1398B4AB2 or 2 Fastener (a) (c)

NAS1398B8AB2

BACB30FM8A2 2 Bolt (a) (d)

BACC30M8U 2 Collar (e)

Pressure and Environmental (e)

Sealant

BMS5-95 2 oz

(a) Refer to 757 Structural Repair Manual Chapter 51 for alternative fasteners.

(b) The spacer is necessary only if it is not installed under the clamp.

(c) Optional to BACR15( ) or NASM20470 Rivets or BACB30FM8A2 Bolt.

(d) Optional to BACR15( ) or NASM20470 Rivets or NAS1398B4AB2 or NAS1398B8AB2

Fasteners.

(e) Necessary only if BACB30FM8A2 bolt is used.

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.

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BOEING SERVICE BULLETIN 757-24-0105
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.

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BOEING SERVICE BULLETIN 757-24-0105
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BOEING SERVICE BULLETIN 757-24-0105

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.

— Hole dimensions for standard solid rivets are given in 757 Structural Repair

Manual, Chapter 51

— Torque limits to tighten nuts and bolts are given in 757 Structural Repair Manual,

Chapter 51.

4. For approved fastener and process material substitutions, refer to 757 Structural

Repair Manual, Chapter 51. Alternate fasteners are given in 757 Structural Repair

Manual Chapter 51 and Boeing Drawing 65-88700.

5. If the length of fasteners specified in this service bulletin do not meet the installation

standards, fasteners of the same specification, or an approved substitute, one grip

length longer or shorter may be used.

6. 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 ensure visual access to all surfaces in the

inspection area. This level of inspection is made under normal 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.

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BOEING SERVICE BULLETIN 757-24-0105
B. WORK INSTRUCTIONS

Group 1, Configuration 1:

Airplanes

WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEARS.

WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR COULD RETRACT AND

CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.

1. Install the ground lock pins on the nose and main landing gears. Refer to 757 AMM 32-00-20, or

approved equivalent procedure.

WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE

OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE

THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO

EQUIPMENT.

2. Deactivate the thrust reversers for ground maintenance. Refer to757 AMM 78-31-00, or approved

equivalent procedure.

WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN

HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS,

SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY

TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC

POWER IS SUPPLIED.

CAUTION: MAKE SURE THE ACCESS DOOR FOR THE ENGINE STRUT, THE INBOARD FAN

COWLING, AND THE THRUST REVERSER COWLING ARE CLEAR FROM MOVEMENT

OF THE SLATS. IF THE MOVEMENT OF THE SLATS IS BLOCKED, IT CAN CAUSE

DAMAGE TO THE AIRPLANE.

3. Extend the leading edge slats. Refer to 757 AMM 27-81-00, or approved equivalent procedure.

4. Install a DO NOT OPERATE tag on the flap control lever.

5. Remove electrical power. Refer to 757 AMM 24-22-00, or approved equivalent procedure.

6. Remove and keep the lower leading edge access panels shown in the table below. Refer to 757

AMM 06-44-00, or approved equivalent procedure.

Panel Number Location

511DB Left wing

511EB Left wing

611DB Right wing

611EB Right wing

7. Do a general visual inspection of the power feeder wire bundle W3312 in the area of the slat

inboard auxiliary track on the left wing. Install the support clamp and plug the hole in the bracket

that is not used as given in Figure 1.

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BOEING SERVICE BULLETIN 757-24-0105
8. Do a general visual inspection of the power feeder wire bundle W3412 in the area of the slat

inboard auxiliary track on the right wing. Install the support clamp and plug the hole in the bracket

that is not used as given in Figure 2.

9. Install the lower leading edge access panels shown in the table below. Refer to 757 AMM 06-44-00,

or approved equivalent procedure.

Panel Number Location

511DB Left wing

511EB Left wing

611DB Right wing

611EB Right wing

10. Apply electrical power. Refer to 757 AMM 24-22-00, or approved equivalent procedure.

11. Remove the DO NOT OPERATE tag from the flap control lever.

12. Retract the leading edge slats. Refer to 757 AMM 27-81-00, or approved equivalent procedure.

13. Reactivate the thrust reversers. Refer to 757 AMM 78-31-00, or approved equivalent procedure.

14. Put the airplane back to a serviceable condition.

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BOEING SERVICE BULLETIN 757-24-0105
Group 1, Configuration 2:

Airplanes

WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEARS.

WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR COULD RETRACT AND

CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.

1. Install the ground lock pins on the nose and main landing gears. Refer to 757 AMM 32-00-20, or

approved equivalent procedure.

WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE

OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE

THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO

EQUIPMENT.

2. Deactivate the thrust reversers for ground maintenance. Refer to757 AMM 78-31-00, or approved

equivalent procedure.

WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN

HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS,

SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY

TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC

POWER IS SUPPLIED.

CAUTION: MAKE SURE THE ACCESS DOOR FOR THE ENGINE STRUT, THE INBOARD FAN

COWLING, AND THE THRUST REVERSER COWLING ARE CLEAR FROM MOVEMENT

OF THE SLATS. IF THE MOVEMENT OF THE SLATS IS BLOCKED, IT CAN CAUSE

DAMAGE TO THE AIRPLANE.

3. Extend the leading edge slats. Refer to 757 AMM 27-81-00, or approved equivalent procedure.

4. Install a DO NOT OPERATE tag on the flap control lever.

5. Remove electrical power. Refer to 757 AMM 24-22-00, or approved equivalent procedure.

6. Remove the lower leading edge access panels shown in the table below. Refer to 757 AMM

06-44-00, or approved equivalent procedure.

Panel Number Location

511DB Left wing

511EB Left wing

611DB Right wing

611EB Right wing

7. Do a general visual inspection of the power feeder wire bundle W3312 in the area of the slat

inboard auxiliary track on the left wing. Install the support clamp and plug the hole in the bracket

that is not used as given in Figure 3.

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BOEING SERVICE BULLETIN 757-24-0105
8. Do a general visual inspection of the power feeder wire bundle W3412 in the area of the slat

inboard auxiliary track on the right wing. Install the support clamp and plug the hole in the bracket

that is not used as given in Figure 4.

9. Install the lower leading edge access panels shown in the table below. Refer to 757 AMM 06-44-00,

or approved equivalent procedure.

Panel Number Location

511DB Left wing

511EB Left wing

611DB Right wing

611EB Right wing

10. Apply electrical power. Refer to 757 AMM 24-22-00, or approved equivalent procedure.

11. Remove the DO NOT OPERATE tag from the flap control lever.

12. Retract the leading edge slats. Refer to 757 AMM 27-81-00, or approved equivalent procedure.

13. Reactivate the thrust reversers. Refer to757 AMM 78-31-00, or approved equivalent procedure.

14. Put the airplane back to a serviceable condition.

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BOEING SERVICE BULLETIN 757-24-0105
FIGURE 1: GROUP 1, CONFIGURATION 1, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK POWER

FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 1 OF 3)

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BOEING SERVICE BULLETIN 757-24-0105
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 one side of the airplane.

STEP TASK NAME IDENTIFICATION QTY MORE DATA

For damage or wear. Refer

to SWPM 20-10-13 for repair.

Power Feeder Wire W3312 -

Bundle

1 Inspect

Make sure the clamp is installed in the upper hole of

the lower bracket. (a) (b)

BACC10JU() or BACC10GU() 1

or BACC10GE()

2 Inspect Clamp

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Remove Nut

/Keep

3

Spacer BACS18AF() 1

BACC10JU() or BACC10GU() 1 (b)

or BACC10GE()

Clamp

Washer NAS1149D0332J -

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Bolt

To plug open holes in the

287N1401-306 and the

271N6178-5 brackets. 757

SRM 51-40-02. (f)

BACR15FT7AD4R5C or 3

BACR15BB7AD5C or

BACR15BB7D5C or

BACR15FT7AD5 or

BACR15FT7AD5C or

BACR15FT7D5C or

NASM20470 or

Install Rivets

(New)

4

NAS1398B4AB2 or 3 (e) (f)

NAS1398B8AB2

Fastener

Wet install with BMS5-95. (c)

(f)

Bolt BACB30FM8A2 3

Collar BACC30M8U 3 (d)

Pressure and Envi- BMS5-95 - (d)

ronmental Sealant

Make sure the clamp is installed in the upper hole of

the lower bracket. If there is

no spacer, add one. (b)

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Install Bolt

(Kept)

5

Washer NAS1149D0332J -

BACC10JU() or BACC10GU() 1

or BACC10GE()

Clamp

BACS18AF4 (Optional: 1

BACS18AF3)

Spacer

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Nut

FIGURE 1: GROUP 1, CONFIGURATION 1, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK POWER

FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 2 OF 3)

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BOEING SERVICE BULLETIN 757-24-0105
STEP TASK NAME IDENTIFICATION QTY MORE DATA

(a) If the clamp is in the correct place, install rivets, fasteners, or bolts as given in Step 4.

(b) If BACC10GE() clamp is installed, make sure that the clamp is not aluminum. If aluminum clamp is installed,

discard and replace with new BACC10JU() clamp, or optional BACC10GU() clamp.

(c) Increase hole size to 0.247-0.250 inch.

(d) Necessary only if BACB30FM8A2 bolts are used.

(e) Increase hole size to 0.256-0.261 if rivet part number, NAS1398B8AB2 is to be installed, refer to SRM 51-

20-01.

(f) Install with head on forward or aft surface of bracket as necessary. Make sure there is no interference with

wires, tubes or components.

FIGURE 1: GROUP 1, CONFIGURATION 1, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK POWER

FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 3 OF 3)

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BOEING SERVICE BULLETIN 757-24-0105
FIGURE 2: GROUP 1, CONFIGURATION 1, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 1 OF 3)

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BOEING SERVICE BULLETIN 757-24-0105
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 one side of the airplane.

STEP TASK NAME IDENTIFICATION QTY MORE DATA

For damage or wear. Refer

to SWPM 20-10-13 for repair.

Power feeder Wire W3412 -

Bundle

1 Inspect

Make sure the clamp is installed in the lower hole of

the attach bracket. (a) (b)

BACC10JU() or BACC10GU() 1

or BACC10GE()

2 Inspect Clamp

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Remove Nut

/Keep

3

Spacer BACS18AF() 1

BACC10JU() or BACC10GU() 1 (b)

or BACC10GE()

Clamp

Washer NAS1149D0332J -

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Bolt

To plug open hole in the

287N1401-306 bracket. 757

SRM 51-40-02. (f)

BACR15FT7AD4R5C or 1

BACR15BB7AD5C or

BACR15BB7D5C or

BACR15FT7AD5 or

BACR15FT7AD5C or

BACR15FT7D5C or

NASM20470 or

Install Rivet

(New)

4

NAS1398B4AB2 or 1 (e) (f)

NAS1398B8AB2

Fastener

Wet install with BMS5-95. (c)

(f)

Bolt BACB30FM8A2 1

Collar BACC30M8U 1 (d)

Pressure and Envi- BMS5-95 - (d)

ronmental Sealant

FIGURE 2: GROUP 1, CONFIGURATION 1, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 2 OF 3)

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BOEING SERVICE BULLETIN 757-24-0105
STEP TASK NAME IDENTIFICATION QTY MORE DATA

Make sure the clamp is installed in the lower hole of

the attach bracket. If there is

no spacer, add one. (b)

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Install Bolt

(Kept)

5

Washer NAS1149D0332J -

BACC10JU() or BACC10GU() 1

or BACC10GE()

Clamp

BACS18AF4 (Optional: 1

BACS18AF3)

Spacer

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Nut

(a) If the clamp is in the correct place install rivet, fastener, or bolt as given in Step 4.

(b) If BACC10GE() clamp is installed, make sure that the clamp is not aluminum. If aluminum clamp is installed,

discard and replace with new BACC10JU() clamp, or optional BACC10GU() clamp.

(c) Increase hole size to 0.247-0.250 inch.

(d) Necessary only if BACB30FM8A2 bolts are used.

(e) Increase hole size to 0.256-0.261 if rivet part number, NAS1398B8AB2 is to be installed, refer to SRM 51-

20-01.

(f) Install with head on forward or aft surface of bracket as necessary. Make sure there is no interference with

wires, tubes or components.

FIGURE 2: GROUP 1, CONFIGURATION 1, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 3 OF 3)

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Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

35 of 41

BOEING SERVICE BULLETIN 757-24-0105
FIGURE 3: GROUP 1, CONFIGURATION 2, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK POWER

FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 1 OF 3)

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

36 of 41

BOEING SERVICE BULLETIN 757-24-0105
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 one side of the airplane.

STEP TASK NAME IDENTIFICATION QTY MORE DATA

For damage or wear. Refer

to SWPM 20-10-13 for repair.

Power Feeder Wire W3312 -

Bundle

1 Inspect

Make sure the clamp is installed in the lower hole of

the attach bracket. (a) (b)

BACC10JU() or BACC10GU() 1

or BACC10GE()

2 Inspect Clamp

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Remove Nut

/Keep

3

Spacer BACS18AF() 1

BACC10JU() or BACC10GU() 1 (b)

or BACC10GE()

Clamp

Washer NAS1149D0332J -

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Bolt

To plug open hole in the

287N1401-306 bracket. 757

SRM 51-40-02. (f)

BACR15FT7AD4R5C or 1

BACR15BB7AD5C or

BACR15BB7D5C or

BACR15FT7AD5 or

BACR15FT7AD5C or

BACR15FT7D5C or

NASM20470 or

Install Rivet

(New)

4

NAS1398B4AB2 or 1 (e) (f)

NAS1398B8AB2

Fastener

Wet install with BMS5-95. (c)

(f)

Bolt BACB30FM8A2 1

Collar BACC30M8U 1 (d)

Pressure and Envi- BMS5-95 - (d)

ronmental Sealant

FIGURE 3: GROUP 1, CONFIGURATION 2, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK POWER

FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 2 OF 3)

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

37 of 41

BOEING SERVICE BULLETIN 757-24-0105
STEP TASK NAME IDENTIFICATION QTY MORE DATA

Make sure the clamp is installed in the lower hole of

the attach bracket. If there is

no spacer, add one. (b)

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Install Bolt

(Kept)

5

Washer NAS1149D0332J -

BACC10JU() or BACC10GU() 1

or BACC10GE()

Clamp

BACS18AF4 (Optional: 1

BACS18AF3)

Spacer

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Nut

(a) If the clamp is in the correct place, install rivet, fastener, or bolt as given in Step 4.

(b) If BACC10GE() clamp is installed, make sure that the clamp is not aluminum. If aluminum clamp is installed,

discard and replace with new BACC10JU() clamp, or optional BACC10GU() clamp.

(c) Increase hole size to 0.247-0.250 inch.

(d) Necessary only if BACB30FM8A2 bolts are used.

(e) Increase hole size to 0.256-0.261 if rivet part number, NAS1398B8AB2 is to be installed, refer to SRM 51-

20-01.

(f) Install with head on forward or aft surface of bracket as necessary. Make sure there is no interference with

wires, tubes or components.

FIGURE 3: GROUP 1, CONFIGURATION 2, AIRPLANES, LEFT WING INBOARD AUXILIARY TRACK POWER

FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 3 OF 3)

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

38 of 41

BOEING SERVICE BULLETIN 757-24-0105
FIGURE 4: GROUP 1, CONFIGURATION 2, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 1 OF 3)

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

39 of 41

BOEING SERVICE BULLETIN 757-24-0105
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 one side of the airplane.

STEP TASK NAME IDENTIFICATION QTY MORE DATA

For damage or wear. Refer

to SWPM 20-10-13 for repair.

Power Feeder Wire W3412 -

Bundle

1 Inspect

Make sure the clamp is installed in the lower hole of the

attach bracket. (a) (b)

BACC10JU() or BACC10GU() 1

or BACC10GE()

2 Inspect Clamp

BACN11AG3 or BACN10FX-() 1

or MS21042L3

Remove Nut

/Keep

3

Spacer BACS18AF() 1

BACC10JU() or BACC10GU() 1 (b)

or BACC10GE()

Clamp

Washer NAS1149D0332J -

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Bolt

To plug open hole in the

287N1401-306 bracket. 757

SRM 51-40-02. (f)

BACR15FT7AD4R5C or 1

BACR15BB7AD5C or

BACR15BB7D5C or

BACR15FT7AD5 or

BACR15FT7AD5C or

BACR15FT7D5C or

NASM20470 or

Install Rivet

(New)

4

NAS1398B4AB2 or 1 (e) (f)

NAS1398B8AB2

Fastener

Wet install with BMS5-95. (c)

(f)

Bolt BACB30FM8A2 1

Collar BACC30M8U 1 (d)

Pressure and Envi- BMS5-95 - (d)

ronmental Sealant

Make sure the clamp is installed in the lower hole of the

attach bracket. If there is no

spacer, add one. (b)

BACS12GU3K() or NAS1801- 1

3-() or BACS12HN3()

Install Bolt

(Kept)

5

Washer NAS1149D0332J -

BACC10JU() or BACC10GU() 1

or BACC10GE()

Clamp

BACS18AF4 (Optional: 1

BACS18AF3)

Spacer

BACN11AG3 or BACN10FX-() 1

or MS2104213

Nut

FIGURE 4: GROUP 1, CONFIGURATION 2, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 2 OF 3)

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

40 of 41

BOEING SERVICE BULLETIN 757-24-0105
STEP TASK NAME IDENTIFICATION QTY MORE DATA

(a) If the clamp is in the correct place, install rivet, fastener, or bolt as given in Step 4.

(b) If BACC10GE() clamp is installed, make sure that the clamp is not aluminum. If aluminum clamp is installed,

discard and replace with new BACC10JU() clamp, or optional BACC10GU() clamp.

(c) Increase hole size to 0.247-0.250 inch.

(d) Necessary only if BACB30FM8A2 bolts are used.

(e) Increase hole size to 0.256-0.261 if rivet part number, NAS1398B8AB2 is to be installed, refer to SRM 51-

20-01.

(f) Install with head on forward or aft surface of bracket as necessary. Make sure there is no interference with

wires, tubes or components.

FIGURE 4: GROUP 1, CONFIGURATION 2, AIRPLANES, RIGHT WING INBOARD AUXILIARY TRACK

POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.

(SHEET 3 OF 3)

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: September 30, 2004

Revision 5 July 30, 2009 757-24-0105

41 of 41

BOEING SERVICE BULLETIN 757-24-0105