Commercial 

Airplanes 737

Service Bulletin

ALERT

Number: 737-28A1210

Original Issue: August 02, 2010

ATA System: 2822

SUBJECT: FUEL- Engine Fuel Feed System - Replacement of the P5-2 Fuel System Module to

Supply Low Fuel Pressure Master Caution Annunciation

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

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Copyright © 2010 The Boeing Company

Unpublished Work - All Rights Reserved

Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable

subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.

This document includes proprietary information owned by The Boeing Company and/or one or more third parties.

Treatment of the document and the information it contains is governed by contract with Boeing. For more

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Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner,

BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the

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BLANK PAGE
Table of Contents

Summary ...................................................... 5

1. PLANNING INFORMATION ........................................ 9

A. Effectivity ................................................ 9

1. Airplanes ............................................. 9

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 30

4. Process Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . . . 33

3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 36

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

FIGURE 1: REMOVAL OF THE P5-2 FUEL SYSTEM MODULE [Group 2-13] . . . . . . . . . . . . . 40

FIGURE 2: INSTALLATION OF THE P5-2 FUEL SYSTEM MODULE [Group 2-13] . . . . . . . . . . . 42

FIGURE 3: REMOVAL OF THE P5-2 FUEL SYSTEM MODULE [Group 14-28] . . . . . . . . . . . . . 44

FIGURE 4: INSTALLATION OF THE P5-2 FUEL SYSTEM MODULE [Group 14-28] . . . . . . . . . . 46

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BLANK PAGE
Commercial 

Airplanes 737

Service Bulletin

ALERT

Summary Number: 737-28A1210

Original Issue: August 02, 2010

ATA System: 2822

SUBJECT: FUEL- Engine Fuel Feed System - Replacement of the P5-2 Fuel System Module to

Supply Low Fuel Pressure Master Caution Annunciation

THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH

1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OWNER.

CONCURRENT REQUIREMENTS

Refer to Paragraph 1.B., Concurrent Requirements.

BACKGROUND

This service bulletin is the result of the safety analysis done by Boeing under SFAR 88, Fuel Tank System Fault

Tolerance Evaluation Requirements. Initial results from the Fuel System Safety Analysis shows that fuel boost

pumps that run dry could cause an overheat condition external of the fuel boost pump explosion resistance area

that is open to the fuel boost pump inlet. An overheat condition in this area could possibly cause an unwanted

ignition source for the fuel vapors in the fuel tank and could cause a fire or explosion.

This service bulletin gives instructions to replace the P5-2 Fuel System Module installed in the flight compartment

with a changed P5-2 Fuel System Module. Replacement of the P5-2 Fuel System Module supplies the low fuel

pressure master caution annunciation. All the equipment and wiring changes for the Master Caution system are

internal to the P5-2 Fuel System Module. The changed master caution logic gives the necessary indication so

that the fuel boost pumps can be turned off by the flight crew so the fuel boost pumps do not operate dry.

The new P5-2 Fuel System Module lets the Master Caution light come on when only one center or auxiliary tank

fuel boost pump low pressure light is on for 10 seconds. Before this change, the low pressure light came on

when both the center or auxiliary tank fuel boost pumps had low pressure.

ACTION (PRR 35440-20R)

Group 1:

Operators should tell Boeing about this modification to get the engineering and accomplishment instructions for

this modification.

Group 2-28:

In the flight compartment, at the P5 overhead panel, remove the P5-2 Fuel System Module. Install a changed

P5-2 Fuel System Module. Do a test to make sure that the P5-2 Fuel System Module operates correctly.

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EFFECTIVITY

737-100/-200/-200C/-300/-400/-500 airplanes. Refer to Service Bulletin Paragraph 1.A.1 for effectivity.

COMPLIANCE

The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service

bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin

mandatory.

Boeing recommends that the change given in this service bulletin be done within 36 months after the original

issue date of this service bulletin.

Group 1:

Operators should tell Boeing about this modification to get the engineering and accomplishment instructions for

this modification.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

MANPOWER

Refer to Paragraph 1.G., Manpower.

MATERIAL INFORMATION

Operator Supplied Parts/Materials.

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BLANK PAGE
Commercial 

Airplanes 737

Service Bulletin

ALERT

Number: 737-28A1210

Original Issue: August 02, 2010

ATA System: 2822

SUBJECT: FUEL- Engine Fuel Feed System - Replacement of the P5-2 Fuel System Module to

Supply Low Fuel Pressure Master Caution Annunciation

THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH

1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OWNER.

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

This service bulletin is for the airplanes shown below. Refer to PRR 35440-20R for data about this

change.

Refer to Service Bulletin Index Document D6-19567, Part 3 for Airplane Variable Number, Line

Number, and Serial Number data.

GROUP CONFIGURATION DESCRIPTION

1 - Airplanes with different P5-2 Fuel System Module part number.

2 - Airplanes with different P5-2 Fuel System Module part number.

3 - Airplanes with different P5-2 Fuel System Module part number.

4 - Airplanes with different P5-2 Fuel System Module part number.

5 - Airplanes with different P5-2 Fuel System Module part number.

6 - Airplanes with different P5-2 Fuel System Module part number.

7 - Airplanes with different P5-2 Fuel System Module part number.

8 - Airplanes with different P5-2 Fuel System Module part number.

9 - Airplanes with different P5-2 Fuel System Module part number.

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GROUP CONFIGURATION DESCRIPTION

10 - Airplanes with different P5-2 Fuel System Module part number.

11 - Airplanes with different P5-2 Fuel System Module part number.

12 - Airplanes with different P5-2 Fuel System Module part number.

13 - Airplanes with different P5-2 Fuel System Module part number.

14 - Airplanes with different P5-2 Fuel System Module part number.

15 - Airplanes with different P5-2 Fuel System Module part number.

16 - Airplanes with different P5-2 Fuel System Module part number.

17 - Airplanes with different P5-2 Fuel System Module part number.

18 - Airplanes with different P5-2 Fuel System Module part number.

19 - Airplanes with different P5-2 Fuel System Module part number.

20 - Airplanes with different P5-2 Fuel System Module part number.

21 - Airplanes with different P5-2 Fuel System Module part number.

22 - Airplanes with different P5-2 Fuel System Module part number.

23 - Airplanes with different P5-2 Fuel System Module part number.

24 - Airplanes with different P5-2 Fuel System Module part number.

25 - Airplanes with different P5-2 Fuel System Module part number.

26 - Airplanes with different P5-2 Fuel System Module part number.

27 - Airplanes with different P5-2 Fuel System Module part number.

28 - Airplanes with different P5-2 Fuel System Module part number.

Airplane Models:

737-100, 737-200, 737-200C, 737-300, 737-400, 737-500

Variable Number Group

PA001 - PA022 1

PA099 1

PA231 - PA232 1

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BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
Variable Number Group

PC001 - PC005 1

PG001 - PG075 1

PG199 1

PG201 - PG230 1

PG251 - PG255 1

PG271 - PG279 1

PG301 - PG314 1

PG331 - PG332 1

PG351 - PG356 1

PG375 1

PG401 - PG403 1

PG431 - PG442 1

PG471 - PG475 1

PG501 - PG505 1

PG571 - PG583 1

PG584 - PG586 15

PG621 - PG630 1

PG651 - PG652 1

PG701 - PG705 1

PH001 15

PH011 - PH013 15

PH021 - PH024 15

PH701 - PH715 1

PH731 - PH732 1

PH741 - PH742 1

PH743 15

PJ001 - PJ002 1

PJ003 14

PJ004 - PJ006 17

PJ007 - PJ009 26

PJ031 - PJ032 1

PJ071 - PJ072 1

PJ101 - PJ104 1

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Variable Number Group

PJ105 - PJ109 15

PJ110 - PJ119 18

PJ201 - PJ219 23

PJ301 - PJ302 10

PJ551 - PJ561 10

PJ601 - PJ615 10

PJ811 12

PJ816 - PJ817 12

PK026 - PK028 15

PK029 18

PK041 - PK047 15

PK048 - PK053 18

PK061 - PK065 15

PK066 - PK067 18

PK068 - PK069 25

PK070 24

PK081 15

PK082 18

PK091 15

PK092 - PK099 18

PK101 - PK103 15

PK111 - PK119 15

PK120 18

PK141 - PK146 15

PK201 - PK204 18

PK211 - PK215 18

PK216 - PK220 21

PK221 - PK223 18

PK231 - PK241 18

PK251 - PK256 17

PK257 26

PK258 17

PK271 - PK274 18

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Variable Number Group

PK281 - PK289 18

PK291 18

PK301 - PK318 18

PK341 18

PK351 - PK355 18

PK356 - PK360 25

PK361 19

PK391 18

PK431 - PK433 18

PK451 - PK452 18

PK461 - PK469 18

PK495 18

PK501 18

PK502 - PK503 25

PK504 18

PK511 - PK514 18

PK515 21

PK519 18

PK521 - PK525 18

PK526 - PK527 21

PK528 22

PK541 - PK564 18

PK565 21

PK581 18

PK591 - PK599 18

PK601 - PK606 18

PK607 - PK610 27

PK611 - PK617 18

PK621 - PK637 18

PK641 - PK642 18

PK661 25

PK662 - PK664 18

PK665 - PK666 21

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Variable Number Group

PK671 - PK680 18

PK681 21

PK691 - PK697 18

PK711 - PK716 18

PK731 - PK749 18

PK750 - PK765 21

PK771 - PK779 18

PK801 - PK804 18

PK819 - PK827 18

PK830 18

PK861 - PK863 18

PK871 - PK874 25

PK881 - PK884 18

PK901 - PK932 17

PK933 - PK938 20

PK971 - PK974 17

PL001 - PL028 18

PL061 18

PL081 18

PL101 - PL113 18

PL151 18

PL171 - PL172 18

PL201 - PL203 18

PL221 18

PL401 - PL408 18

PL409 - PL410 25

PL411 18

PL412 25

PL413 - PL417 18

PL421 18

PL441 18

PL451 - PL454 18

PL455 - PL456 21

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Variable Number Group

PL471 18

PL491 18

PL501 - PL506 26

PL551 - PL562 18

PL581 18

PL601 - PL603 27

PL611 18

PL621 - PL623 18

PL624 - PL625 21

PL626 22

PL631 - PL632 27

PL711 - PL712 1

PL716 1

PL717 - PL720 16

PL721 - PL725 19

PL726 - PL730 15

PL731 - PL735 18

PL736 - PL743 15

PL744 - PL745 18

PL746 - PL747 21

PL756 15

PL758 15

PL761 - PL766 15

PL767 - PL770 18

PL781 - PL782 15

PL783 - PL788 18

PL793 15

PL801 - PL803 1

PM001 - PM006 18

PM016 - PM017 18

PM021 - PM023 18

PM051 - PM062 18

PM063 - PM066 21

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Variable Number Group

PM101 - PM107 27

PM108 - PM119 18

PM141 - PM142 27

PM171 21

PM181 21

PM251 - PM255 21

PM281 - PM283 21

PM381 - PM399 10

PM401 - PM417 10

PM541 - PM564 10

PN001 - PN002 27

PN021 - PN035 18

PN036 - PN043 21

PN081 - PN086 18

PN101 - PN112 18

PN113 - PN117 21

PN131 - PN163 21

PN401 - PN420 21

PN431 - PN433 21

PN451 - PN456 21

PN471 - PN472 21

PN473 - PN474 22

PN481 21

PN491 - PN493 21

PN501 21

PN502 22

PN511 21

PN512 22

PN521 28

PP001 - PP037 2

PP038 - PP047 6

PP048 - PP054 12

PP101 - PP126 2

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Variable Number Group

PP127 - PP139 6

PP140 - PP160 10

PP161 - PP169 2

PP181 - PP187 2

PP188 - PP194 6

PP195 - PP199 10

PP201 - PP204 2

PP205 6

PP221 2

PP231 - PP243 2

PP281 - PP286 2

PP301 - PP305 2

PP351 - PP352 2

PP353 6

PP376 - PP384 2

PP391 - PP393 6

PP401 - PP429 4

PP430 - PP440 9

PP471 - PP475 3

PP501 - PP504 3

PP505 - PP520 12

PP521 - PP522 2

PP631 - PP634 2

PP651 - PP652 2

PP671 - PP689 2

PP690 - PP694 3

PP695 - PP699 2

PP701 - PP706 2

PP707 - PP716 3

PP717 - PP726 2

PP727 - PP733 6

PP771 - PP777 2

PP778 - PP779 6

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Variable Number Group

PP801 - PP804 2

PP805 - PP808 10

PP821 - PP827 2

PP831 - PP836 2

PP837 - PP844 6

PP845 10

PP846 - PP848 2

PP851 2

PP852 6

PP861 - PP870 2

PP871 - PP877 10

PP891 - PP899 2

PP901 - PP909 2

PP910 - PP913 6

PP914 - PP930 10

PP931 - PP934 2

PP935 - PP936 6

PP946 - PP948 2

PP951 - PP952 2

PP961 - PP965 2

PP966 - PP967 10

PP981 - PP982 2

PP983 - PP990 10

PP991 2

PP993 10

PQ001 - PQ012 2

PQ013 - PQ016 10

PQ026 - PQ037 2

PQ038 - PQ041 10

PQ051 - PQ062 5

PQ063 - PQ065 7

PQ066 - PQ085 11

PQ086 - PQ088 5

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Variable Number Group

PQ089 - PQ090 7

PQ091 - PQ092 11

PQ101 - PQ115 2

PQ116 - PQ133 6

PQ134 - PQ199 10

PQ201 - PQ202 10

PQ221 - PQ230 10

PQ231 - PQ232 2

PQ233 6

PQ234 - PQ237 10

PQ241 - PQ243 6

PQ251 - PQ267 10

PQ281 - PQ299 10

PQ301 - PQ307 6

PQ331 - PQ332 10

PQ341 - PQ348 10

PQ361 - PQ373 10

PQ391 - PQ395 10

PQ401 - PQ418 10

PQ421 10

PQ431 - PQ438 10

PQ447 - PQ448 10

PQ451 10

PQ454 10

PQ471 - PQ475 10

PQ479 - PQ481 10

PQ486 - PQ487 10

PQ491 - PQ493 10

PQ771 - PQ772 10

PQ791 - PQ793 10

PQ801 - PQ805 10

PQ931 - PQ935 10

PQ951 10

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Variable Number Group

PQ971 - PQ997 10

PR001 - PR017 10

PR021 - PR034 10

PR041 - PR045 10

PR061 - PR072 10

PR077 - PR082 10

PR091 - PR092 10

PR096 10

PR101 10

PR121 - PR122 10

PR131 - PR132 10

PR141 - PR143 10

PR161 - PR172 10

PR181 10

PS601 - PS631 10

PS636 - PS638 10

PS641 - PS644 10

PS651 - PS657 10

PS666 - PS669 10

PS691 - PS692 10

PS701 - PS706 11

PS751 - PS799 10

PS811 10

PS836 - PS837 10

PS841 - PS846 10

PS851 - PS852 10

PS856 10

PS861 - PS863 12

PS866 - PS868 12

PS871 - PS874 10

PS896 - PS897 10

PS901 - PS941 10

PS956 - PS957 12

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Variable Number Group

PS961 - PS963 10

PS971 - PS978 10

PT001 - PT015 10

PT021 - PT031 10

PT041 - PT064 10

PT101 - PT105 10

PT121 - PT138 13

PT146 - PT148 10

PT161 - PT170 10

PT181 - PT188 10

PT211 - PT220 10

PT295 10

PT301 - PT309 10

PT331 - PT360 11

PT381 - PT399 10

PT401 - PT438 10

PT501 - PT517 10

PT561 - PT565 11

PT581 - PT586 10

PT611 - PT621 10

PT641 - PT644 10

PT651 - PT656 10

PT671 - PT672 10

PT681 - PT685 10

PT701 - PT703 10

PT716 - PT717 10

PT721 - PT725 10

PT801 - PT834 10

PT851 - PT854 10

PT871 - PT886 10

PT901 - PT930 10

PT971 - PT973 10

PT981 - PT985 10

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Variable Number Group

PT996 10

PU001 - PU025 10

PU301 10

PU311 - PU313 10

PV001 12

PV002 - PV007 8

PV008 - PV055 12

PV201 - PV209 10

PV226 - PV229 10

PV231 - PV237 11

PV271 - PV272 10

PV281 - PV287 10

PV296 10

PV301 - PV302 10

PV351 10

PV356 - PV357 10

PW001 - PW002 6

PW003 - PW054 10

PW061 - PW068 10

PW072 10

PW086 - PW088 10

PW091 - PW094 10

PW101 - PW102 10

PW106 10

PW111 - PW120 10

PW156 - PW157 10

PW161 - PW171 11

PW201 - PW252 10

PW261 - PW268 10

PW271 - PW276 10

PW278 10

PW281 - PW292 10

PW293 12

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ALERT ALERT
Variable Number Group

PW296 10

PW301 - PW327 10

PW401 - PW408 10

PW411 - PW418 10

PW421 - PW424 10

PW431 - PW435 10

PW441 - PW450 10

PW461 - PW467 10

PW501 - PW504 10

PW511 - PW522 12

PW524 12

PW525 - PW529 10

PW530 - PW547 12

PW548 - PW550 10

PW556 - PW557 12

PW561 - PW564 10

PW571 - PW576 10

PW591 - PW596 10

PW611 - PW622 10

PW631 - PW637 10

PW661 - PW662 10

PW681 - PW683 10

PW701 - PW702 12

PW711 - PW717 10

PW741 - PW742 10

PW761 10

PW771 10

PW831 10

PW851 - PW856 10

PX071 1

PX701 1

PY001 - PY008 1

PY021 1

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ALERT ALERT
Variable Number Group

PY022 15

PY031 1

PY036 - PY037 15

PY046 - PY047 15

PY048 18

PY051 - PY052 16

PY053 19

PY056 - PY057 18

PY101 - PY103 15

PY111 - PY113 15

PY131 15

PY132 - PY135 18

PY141 - PY142 15

PY143 18

PY151 - PY154 18

PY156 - PY157 18

PY161 - PY162 18

PY166 18

PY191 18

PY201 18

PY221 - PY222 18

PY231 18

PY241 - PY244 18

PY270 18

PY271 - PY273 15

PY274 - PY275 18

PY281 15

PY286 18

PY301 - PY304 1

PY321 - PY323 1

PY341 - PY346 1

PY361 - PY362 1

PY381 1

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ALERT ALERT
Variable Number Group

PY401 18

PY409 - PY410 21

PY411 18

PY421 - PY422 18

PY441 18

PY451 18

PY461 - PY462 18

PY463 21

PY591 - PY595 21

PY611 - PY612 18

PY621 18

PY631 18

PY651 18

PY671 - PY672 18

PY721 21

PY741 18

2. Spares Affected

None.

B. Concurrent Requirements

If operators elect to rework the existing P5-2 fuel system module assembly, the service bulletin listed

below must be done before or at the same time as this service bulletin:

Group 1:

Operators should tell Boeing about this modification to get the engineering and accomplishment

instructions for this modification.

Group 2-28:

Company Service Bulletin Description

Gives instructions to install a printed circuit

assembly in the P5-2 fuel system module

assembly for fuel system master caution

warning.

69-37335-28-04, Revision 2, dated Feb

10/2010

BAE Systems

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C. Reason

This service bulletin is the result of the safety analysis done by Boeing under SFAR 88, Fuel Tank

System Fault Tolerance Evaluation Requirements. Initial results from the Fuel System Safety Analysis

shows that fuel boost pumps that run dry could cause an overheat condition external of the fuel boost

pump explosion resistance area that is open to the fuel boost pump inlet. An overheat condition in this

area could possibly cause an unwanted ignition source for the fuel vapors in the fuel tank and could

cause a fire or explosion.

This service bulletin gives instructions to replace the P5-2 Fuel System Module installed in the flight

compartment with a changed P5-2 Fuel System Module. Replacement of the P5-2 Fuel System Module

supplies the low fuel pressure master caution annunciation. All the equipment and wiring changes for

the Master Caution system are internal to the P5-2 Fuel System Module. The changed master caution

logic gives the necessary indication so that the fuel boost pumps can be turned off by the flight crew

so the fuel boost pumps do not operate dry.

The new P5-2 Fuel System Module lets the Master Caution light come on when only one center or

auxiliary tank fuel boost pump low pressure light is on for 10 seconds. Before this change, the low

pressure light came on when both the center or auxiliary tank fuel boost pumps had low pressure.

D. Description

Group 1:

Operators should tell Boeing about this modification to get the engineering and accomplishment

instructions for this modification.

Group 2-28:

In the flight compartment, at the P5 overhead panel, remove the P5-2 Fuel System Module. Install a

changed P5-2 Fuel System Module. Do a test to make sure that the P5-2 Fuel System Module operates

correctly.

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

Group 1:

Affected Maintenance Zones

Model Zone

737-100, 737-200, 737-200C 1-1

Group 2-5, 7, 9:

Affected Maintenance Zones

Model Zone

737-300 101

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Group 6, 12:

Affected Maintenance Zones

Model Zone

737-300, 737-400 101

Group 8:

Affected Maintenance Zones

Model Zone

737-400 101

Group 10-11:

Affected Maintenance Zones

Model Zone

737-300, 737-400, 737-500 101

Group 13:

Affected Maintenance Zones

Model Zone

737-500 101

Group 14, 17, 20, 22-28:

Affected Maintenance Zones

Model Zone

737-200 1-1

Group 15-16, 18-19, 21:

Affected Maintenance Zones

Model Zone

737-200, 737-200C 1-1

E. Compliance

The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to

this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this

service bulletin mandatory.

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ALERT ALERT
Boeing recommends that the change given in this service bulletin be done within 36 months after the

original issue date of this service bulletin.

Group 1:

Operators should tell Boeing about this modification to get the engineering and accomplishment

instructions for this modification.

F. Approval

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified

in this service bulletin comply with the applicable regulations and are FAA approved, as well as European

Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved

airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on

the airplane in its original Boeing delivery configuration or as modified by other approved Boeing

changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected

by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval

before incorporating this service bulletin.

G. Manpower

The table below shows an estimate of the man-hours necessary to do this service bulletin for each

airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with

operator man-hour data if necessary. The estimate does not include lost time. These are some examples

of lost time:

— Time to adjust to the workplace

— Time to schedule the work

— Time to inspect the work

— Time to find the tools.

Group 1:

Operators should tell Boeing about this modification to get the engineering and accomplishment

instructions for this modification.

Group 2-13:

Elapsed Time

(Hours)

Number of Task-Hours

Persons

Task Figure

Remove P5-2 Module 1 1 0.25 0.25

Install P5-2 Module 2 1 0.25 0.25

Do Functional Test - 1 0.5 0.5

TOTAL FOR EACH AIRPLANE 1.0 1.0

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Group 14-28:

Elapsed Time

(Hours)

Number of Task-Hours

Persons

Task Figure

Remove P5-2 Module 3 1 0.25 0.25

Install P5-2 Module 4 1 0.25 0.25

Do Functional Test - 1 0.5 0.5

TOTAL FOR EACH AIRPLANE 1.0 1.0

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not applicable.

J. References

1. Existing Data:

a. For 737-100/-200/-200C airplanes

(1) 737-100/200 Aircraft Maintenance Manual (AMM) 24-22-0, 28-22-122, 28-42-0

(2) Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-19

(3) 737 Maintenance Planning Document (MPD) Section 9

(4) Boeing Airplane Service Bulletin 737-28A1228

(5) Boeing Document D6-51706, Service Bulletin Index

(6) BAE Systems Component Service Bulletin 69-37335-28-04

(7) Engineering Change Memo PRR 35440-20R

(8) FAA Airworthiness Directive 2001-08-24

(9) Federal Aviation Regulation (SFAR) 88

b. For 737-300/-400/-500 airplanes

(1) 737-300/400/500 Aircraft Maintenance Manual (AMM) 24-22-00, 28-22-43, 28-42-00

(2) Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-19

(3) 737 Maintenance Planning Document (MPD) Section 9

(4) Boeing Airplane Service Bulletin 737-28A1216

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ALERT ALERT
(5) Boeing Document D6-51706, Service Bulletin Index

(6) BAE Systems Component Service Bulletin 69-37335-28-04

(7) Engineering Change Memo PRR 35440-20R

(8) FAA Airworthiness Directive 2001-08-24

(9) Federal Aviation Regulation (SFAR) 88

2. Data supplied with this Service Bulletin:

None.

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

Drawing Number Title

MODULE INSTALLATION-OVERHEAD,

ELECTRONICS, AND AUXILIARY

65-46991

MODULE INSTALLATION-OVERHEAD,

ELECTRONICS, AND AUXILIARY

65C46991

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.

4. Process Data:

Boeing Process specifications referred to on the drawings are not given in this service bulletin

since these procedures are frequently used as standard shop practices.

K. Publications Affected

1. Publications:

Publication Chapter-Section

737 FAA Approved Airplane Flight Manual (a)

737 Illustrated Parts Catalog 28-22

Chapter 12, Normal Procedures (NP), Non-Normal

Checklist (NNC)

737 Flight Crew Operations Manual

(a) This Change affects Section 1 and 3 of the FAA Approved Airplane Flight

Manual. Operators will receive applicable data.

2. Damage Tolerance Based Structural Inspections:

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BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
Boeing has evaluated this service bulletin for effects on Fatigue Critical Structure (FCS) and for

changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This

service bulletin does not affect FCS, therefore DTIs are not necessary.

L. Interchangeability and Intermixability of Parts

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

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ALERT ALERT

BLANK PAGE
2. MATERIAL INFORMATION

A. Material - Price and Availability

The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary for Each

Airplane and Paragraph 2.D., Parts Necessary to Change Spares. Refer to BAE Systems Component

Service Bulletin 69-37335-28-04.

B. Industry Support Information

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

C. Parts Necessary For Each Airplane

1. Kits/Parts:

None.

2. Parts and Materials Supplied by the Operator:

Existing Part Notes

Number

Airplane QTY Name

Group

New Part Number

69-37335-31 or (a)(b)

69-37335-134

P5-2 Fuel System

Module Assembly

69-37335-2031 or - 1

69-37335-2134

69-37335-32 or (a)(b)

69-37335-135

P5-2 Fuel System

Module Assembly

69-37335-2032 or - 1

69-37335-2135

69-37335-39 or (a)(b)

69-37335-136

P5-2 Fuel System

Module Assembly

69-37335-2039 or - 1

69-37335-2136

69-37335-43 or (a)(b)

69-37335-115

P5-2 Fuel System

Module Assembly

69-37335-2043 or 14 1

69-37335-2115

69-37335-45 or (a)(b)

69-37335-137

P5-2 Fuel System

Module Assembly

69-37335-2045 or 15 1

69-37335-2137

69-37335-51 or (a)(b)

69-37335-117

P5-2 Fuel System

Module Assembly

69-37335-2051 or 16 1

69-37335-2117

69-37335-58 or (a)(b)(c)

69-37335-138

P5-2 Fuel System

Module Assembly

69-37335-2058 or 23 1

69-37335-2138

69-37335-66 or (a)(b)

69-37335-115

P5-2 Fuel System

Module Assembly

69-37335-2066 or 17 1

69-37335-2115

69-37335-67 or (a)(b)

69-37335-139

P5-2 Fuel System

Module Assembly

69-37335-2067 or 18 1

69-37335-2139

69-37335-68 or (a)(b)

69-37335-143

P5-2 Fuel System

Module Assembly

69-37335-2068 or 19 1

69-37335-2143

69-37335-71 or (a)(b)(c)

69-37335-140

P5-2 Fuel System

Module Assembly

69-37335-2071 or 24 1

69-37335-2140

69-37335-72 or (a)(b)(c)

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2072 or 25 1

69-37335-2128

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ALERT ALERT
Existing Part Notes

Number

Airplane QTY Name

Group

New Part Number

69-37335-79 or (a)(b)(c)

69-37335-119

P5-2 Fuel System

Module Assembly

69-37335-2079 or 26 1

69-37335-2119

69-37335-87 or (a)(b)(c)

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2087 or 27 1

69-37335-2128

69-37335-88 or (a)(b)

69-37335-129

P5-2 Fuel System

Module Assembly

69-37335-2088 or 2 1

69-37335-2129

69-37335-93 or (a)(b)

69-37335-115

P5-2 Fuel System

Module Assembly

69-37335-2093 or 20 1

69-37335-2115

69-37335-95 or (a)(b)

69-37335-133

P5-2 Fuel System

Module Assembly

69-37335-2095 or 21 1

69-37335-2133

69-37335-96 or (a)(b)

69-37335-117

P5-2 Fuel System

Module Assembly

69-37335-2096 or - 1

69-37335-2117

69-37335-98 or (a)(b)(c)

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2098 or - 1

69-37335-2128

P5-2 Fuel System 69-37335-100 (a)(b)(c)

Module Assembly

69-37335-2100 - 1

69-37335-105 or (a)(b)(c)

69-37335-131

P5-2 Fuel System

Module Assembly

69-37335-2105 or 3 1

69-37335-2131

69-37335-111 or (a)(b)

69-37335-132

P5-2 Fuel System

Module Assembly

69-37335-2111 or 4 1

69-37335-2132

69-37335-112 or (a)(b)

69-37335-130

P5-2 Fuel System

Module Assembly

69-37335-2112 or 5 1

69-37335-2130

P5-2 Fuel System 69-37335-115 (a)(b)

Module Assembly

69-37335-2115 - 1

P5-2 Fuel System 69-37335-117 (a)(b)

Module Assembly

69-37335-2117 - 1

69-37335-118 or (a)(b)(c)

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2118 or 28 1

69-37335-2128

P5-2 Fuel System 69-37335-119 (a)(b)(c)

Module Assembly

69-37335-2119 - 1

69-37335-123 or (a)(b)

69-37335-129

P5-2 Fuel System

Module Assembly

69-37335-2123 or 6 1

69-37335-2129

69-37335-124 or (a)(b)

69-37335-130

P5-2 Fuel System

Module Assembly

69-37335-2124 or 7 1

69-37335-2130

69-37335-125 or (a)(b)

69-37335-131

P5-2 Fuel System

Module Assembly

69-37335-2125 or 8 1

69-37335-2131

69-37335-126 or (a)(b)

69-37335-132

P5-2 Fuel System

Module Assembly

69-37335-2126 or 9 1

69-37335-2132

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ALERT ALERT
Existing Part Notes

Number

Airplane QTY Name

Group

New Part Number

69-37335-127 or (a)(b)

69-37335-133

P5-2 Fuel System

Module Assembly

69-37335-2127 or 22 1

69-37335-2133

P5-2 Fuel System 69-37335-128 (a)(b)(c)

Module Assembly

69-37335-2128 - 1

P5-2 Fuel System 69-37335-129 (a)(b)

Module Assembly

69-37335-2129 10 1

P5-2 Fuel System 69-37335-130 (a)(b)

Module Assembly

69-37335-2130 11 1

P5-2 Fuel System 69-37335-131 (a)(b)(c)

Module Assembly

69-37335-2131 12 1

P5-2 Fuel System 69-37335-132 (a)(b)

Module Assembly

69-37335-2132 13 1

P5-2 Fuel System 69-37335-133 (a)(b)

Module Assembly

69-37335-2133 - 1

P5-2 Fuel System 69-37335-134 (a)(b)

Module Assembly

69-37335-2134 - 1

P5-2 Fuel System 69-37335-135 (a)(b)

Module Assembly

69-37335-2135 - 1

P5-2 Fuel System 69-37335-136 (a)(b)

Module Assembly

69-37335-2136 - 1

P5-2 Fuel System 69-37335-137 (a)(b)

Module Assembly

69-37335-2137 - 1

P5-2 Fuel System 69-37335-138 (a)(b)(c)

Module Assembly

69-37335-2138 - 1

P5-2 Fuel System 69-37335-139 (a)(b)

Module Assembly

69-37335-2139 - 1

P5-2 Fuel System 69-37335-140 (a)(b)(c)

Module Assembly

69-37335-2140 - 1

P5-2 Fuel System 69-37335-143 (a)(b)

Module Assembly

69-37335-2143 - 1

(a) Make the change as given in this service bulletin. This is the new part number after

the change given in the BAE Systems Component Service Bulletin 69-37335-28-04,

Revision 2, dated Feb 10/2010 is done.

(b) This part is not used in production.

(c) This part is for airplanes with auxiliary fuel tank.

Operators with Group 1 airplanes should contact Boeing to get the engineering and accomplishment

instructions for this modification.

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ALERT ALERT
3. Parts Modified and Reidentified:

Refer to BAE Systems Component Service Bulletin 69-37335-28-04, Revision 2, dated Feb 10/2010.

4. Parts Removed and Not Replaced:

None.

D. Parts Necessary to Change Spares

Refer to BAE Systems Component Service Bulletin 69-37335-28-04, Revision 2, dated Feb 10/2010.

E. Special Tooling - Price and Availability

None.

F. Special Tooling Necessary to do this Service Bulletin

No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance

and overhaul tools in the manuals given 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 737-28A1210

ALERT ALERT
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. The instructions identified in Paragraph 3.B., Work Instructions and the Figure(s)

give the recommended sequence of steps. The sequence of steps to do this service

bulletin can be changed.

2. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for

definition of the acronyms.

3. Obey all of the warnings and cautions given in the specified manual sections.

4. The work instructions are divided into 3 parts.

– Part 1 is for 737-100/200/200C airplanes line numbers 1-291.

– Part 2 is for 737-300/400/500 airplanes.

– Part 3 is for 737-100/200/200C airplanes line numbers 292 and higher.

5. Unless shown differently, these dimensions and tolerances are used:

– Linear dimensions are in inches

– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus

or minus 0.03 inch

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

– Angular tolerance is plus or minus 2 degrees

– Hole dimensions for standard solid rivets are in SRM 51-30-05 for 737-100/200

and SRM 51-40-05 for 737-300/400/500

– Torque limits to tighten nuts and bolts are in SRM 51-30-04 for 737-100/200

and SRM 51-40-04 for 737-300/400/500

6. Use the approved fastener and process material substitutions in accordance with

737 SRM 51. Alternate fasteners are listed in 737 SRM 51and Boeing Drawing

65-88700.

7. Refer to the SWPM 20-10-11 and SWPM 20-10-12 for the wire installation procedures.

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ALERT ALERT
8. If the length of any fastener specified in this service bulletin does not meet the

installation standards in SRM 51, then a fastener of the same specification, or an

approved substitute, with a length which meets the installation standards in SRM 51

may be used.

9. Refer to BAE Systems Component Service Bulletin 69-37335-28-04 Revision 2 dated

Feb 10/2010, for the component part number changes of the P5-2 Fuel System

Module. BAE Systems Component Service Bulletin 69-37335-28-04, Revision 2,

dated Feb 10/2010, gives the procedures to change the equipment and wire

connections in the P5-2 Fuel System Modules.

10. These work instructions refer to procedures included in other Boeing documents.

When the words "refer to" are used and the operator has an accepted alternative

procedure, the accepted alternative procedure can be used. When the words "in

accordance with" are included in the instruction, the procedure in the Boeing document

must be used.

B. WORK INSTRUCTIONS

1. Group 1:

Part 1 Work Instructions - Operators should tell Boeing about this modification to get the engineering

and accomplishment instructions for this modification.

2. Group 2-13:

Part 2 Work Instructions- Change of the P5-2 Fuel System Module for the Master Caution System.

a. Remove electrical power from the airplane. Refer to 737-300/400/500 AMM 24-22-00 as an

accepted procedure.

b. In the flight compartment, at the P5 forward overhead panel, remove the P5-2 Fuel System

Module in accordance with FIGURE 1.

c. Install a changed or new P5-2 Fuel System Module with new part number in accordance with

FIGURE 2.

d. Apply electrical power to the airplane. Refer to 737-300/400/500 AMM 24-22-00 as an accepted

procedure.

e. Do the Master Caution Timing Test and Operational Test of the Fuel System Module. Refer

to 737-300/400/500 AMM 28-22-43 as an accepted procedure.

f. Do the Fuel Feed Low Pressure Indicating Test. Refer to 737-300/400/500 AMM 28-42-00 as

an accepted procedure.

g. Remove electrical power from the airplane. Refer to 737-300/400/500 AMM 24-22-00 as an

accepted procedure.

h. Put the airplane back to a serviceable condition.

3. Group 14-28:

Part 3 Work Instructions- Change of the P5-2 Fuel System Module for the Master Caution System.

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ALERT ALERT
a. Remove electrical power from the airplane. Refer to 737-100/200 AMM 24-22-0 as an accepted

procedure.

b. At the P5 forward overhead panel, remove the P5-2 Fuel System Module in accordance with

FIGURE 3.

c. Install a changed or new P5-2 Fuel System Module with new part number in accordance with

FIGURE 4.

d. Apply electrical power to the airplane. Refer to 737-100/200 AMM 24-22-0 as an accepted

procedure.

e. Do the Master Caution Timing Test and and Operational Test of the Fuel System Module.

Refer to 737-100/200 AMM 28-22-122 as an accepted procedure.

f. Do the Fuel Feed Low Pressure Indicating Test. Refer to 737-100/200 AMM 28-42-0 as an

accepted procedure.

g. Remove electrical power from the airplane. Refer to 737-100/200 AMM 24-22-0 as an accepted

procedure.

h. Put the airplane back to a serviceable condition.

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Original Issue: August 02, 2010

737-28A1210

39 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
This Figure applies only to: Group 2-13.

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the numbers of parts necessary for one airplane.

STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

From the P5 forward overhead

panel. Refer to 737-300/400/500

AMM 28-22-43 as an accepted

procedure.

P5-2 Fuel Sys- 69-37335-( ) (a) 1

tem Module

1 Remove

FIGURE 1: REMOVAL OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 1 OF 2)

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737-28A1210

40 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

(a) Refer to Table A below for the existing P5-2 Fuel System Module part numbers applicable for each

airplane group.

TABLE A - EXISTING P5-2 FUEL SYSTEM MODULE

Existing Part

Number

Group QTY Part Name

69-37335-88 or

69-37335-129

P5-2 Fuel System

Module Assembly

2 1

69-37335-105 or

69-37335-131

P5-2 Fuel System

Module Assembly

3 1

69-37335-111 or

69-37335-132

P5-2 Fuel System

Module Assembly

4 1

69-37335-112 or

69-37335-130

P5-2 Fuel System

Module Assembly

5 1

69-37335-123 or

69-37335-129

P5-2 Fuel System

Module Assembly

6 1

69-37335-124 or

69-37335-130

P5-2 Fuel System

Module Assembly

7 1

69-37335-125 or

69-37335-131

P5-2 Fuel System

Module Assembly

8 1

69-37335-126 or

69-37335-132

P5-2 Fuel System

Module Assembly

9 1

P5-2 Fuel System 69-37335-129

Module Assembly

10 1

P5-2 Fuel System 69-37335-130

Module Assembly

11 1

P5-2 Fuel System 69-37335-131

Module Assembly

12 1

P5-2 Fuel System 69-37335-132

Module Assembly

13 1

FIGURE 1: REMOVAL OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 2 OF 2)

BOEING PROPRIETARY -

Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

41 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
This Figure applies only to: Group 2-13.

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the numbers of parts necessary for one airplane.

STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

In the P5 forward overhead panel.

Refer to 737-300/400/500 AMM 28-

22-43 as an accepted procedure.

P5-2 Fuel System 69-37335-( ) (a) 1

Module

1 Install

FIGURE 2: INSTALLATION OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 1 OF 2)

BOEING PROPRIETARY -

Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

42 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

(a) Refer to Table B below for the new P5-2 Fuel System Module part numbers applicable for each airplane

group.

TABLE B - NEW P5-2 FUEL SYSTEM MODULE

Before Change

Part Number

New Part Number Group QTY Part Name

69-37335-88 or

69-37335-129

P5-2 Fuel System

Module Assembly

69-37335-2088 or 2 1

69-37335-2129

69-37335-105 or

69-37335-131

P5-2 Fuel System

Module Assembly

69-37335-2105 or 3 1

69-37335-2131

69-37335-111 or

69-37335-132

P5-2 Fuel System

Module Assembly

69-37335-2111 or 4 1

69-37335-2132

69-37335-112 or

69-37335-130

P5-2 Fuel System

Module Assembly

69-37335-2112 or 5 1

69-37335-2130

69-37335-123 or

69-37335-129

P5-2 Fuel System

Module Assembly

69-37335-2123 or 6 1

69-37335-2129

69-37335-124 or

69-37335-130

P5-2 Fuel System

Module Assembly

69-37335-2124 or 7 1

69-37337-2130

69-37335-125 or

69-37335-131

P5-2 Fuel System

Module Assembly

69-37335-2125 or 8 1

69-37335-2131

69-37335-126 or

69-37335-132

P5-2 Fuel System

Module Assembly

69-37335-2126 or 9 1

69-37335-2132

P5-2 Fuel System 69-37335-129

Module Assembly

69-37335-2129 10 1

P5-2 Fuel System 69-37335-130

Module Assembly

69-37335-2130 11 1

P5-2 Fuel System 69-37335-131

Module Assembly

69-37335-2131 12 1

P5-2 Fuel System 69-37335-132

Module Assembly

69-37335-2132 13 1

FIGURE 2: INSTALLATION OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 2 OF 2)

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Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

43 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
This Figure applies only to: Group 14-28.

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the numbers of parts necessary for one airplane.

STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

From the P5 forward overhead

panel. Refer to 737-100/200 AMM

28-22-122 as an accepted procedure.

P5-2 Fuel Sys- 69-37335-( ) (a) 1

tem Module

1 Remove

FIGURE 3: REMOVAL OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 1 OF 2)

BOEING PROPRIETARY -

Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

44 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

(a) Refer to Table C below for the existing P5-2 Fuel System Module part numbers for each airplane

group.

TABLE C - EXISTING P5-2 FUEL SYSTEM MODULE

Existing Part

Number

Group QTY Part Name

69-37335-43 or

69-37335-115

P5-2 Fuel System

Module Assembly

14 1

69-37335-45 or

69-37335-137

P5-2 Fuel System

Module Assembly

15 1

69-37335-51 or

69-37335-117

P5-2 Fuel System

Module Assembly

16 1

69-37335-58 or

69-37335-138

P5-2 Fuel System

Module Assembly

23 1

69-37335-66 or

69-37335-115

P5-2 Fuel System

Module Assembly

17 1

69-37335-67 or

69-37335-139

P5-2 Fuel System

Module Assembly

18 1

69-37335-68 or

69-37335-143

P5-2 Fuel System

Module Assembly

19 1

69-37335-71 or

69-37335-140

P5-2 Fuel System

Module Assembly

24 1

69-37335-72 or

69-37335-128

P5-2 Fuel System

Module Assembly

25 1

69-37335-79 or

69-37335-119

P5-2 Fuel System

Module Assembly

26 1

69-37335-87 or

69-37335-128

P5-2 Fuel System

Module Assembly

27 1

69-37335-93 or

69-37335-115

P5-2 Fuel System

Module Assembly

20 1

69-37335-95 or

69-37335-133

P5-2 Fuel System

Module Assembly

21 1

69-37335-118 or

69-37335-128

P5-2 Fuel System

Module Assembly

28 1

69-37335-127 or

69-37335-133

P5-2 Fuel System

Module Assembly

22 1

FIGURE 3: REMOVAL OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 2 OF 2)

BOEING PROPRIETARY -

Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

45 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
This Figure applies only to: Group 14-28.

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the numbers of parts necessary for one airplane.

STEP TASK PART NAME IDENTIFICATION QTY MORE DATA

In the P5 forward overhead panel.

Refer to 737-100/200 AMM 28-22-

122 as an accepted procedure.

P5-2 Fuel System 69-37335-( ) (a) 1

Module

1 Install

(a) Refer to Table D below for the new P5-2 Fuel System Module part numbers for each airplane group.

FIGURE 4: INSTALLATION OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 1 OF 2)

BOEING PROPRIETARY -

Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

46 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT
TABLE D - NEW P5-2 FUEL SYSTEM MODULE

Before Change

Part Number

New Part Number Group QTY Part Name

69-37335-43 or

69-37335-115

P5-2 Fuel System

Module Assembly

69-37335-2043 or 14 1

69-37335-2115

69-37335-45 or

69-37335-137

P5-2 Fuel System

Module Assembly

69-37335-2045 or 15 1

69-37335-2137

69-37335-51 or

69-37335-117

P5-2 Fuel System

Module Assembly

69-37335-2051 or 16 1

69-37335-2117

69-37335-58 or

69-37335-138

P5-2 Fuel System

Module Assembly

69-37335-2058 or 23 1

69-37335-2138

69-37335-66 or

69-37335-115

P5-2 Fuel System

Module Assembly

69-37335-2066 or 17 1

69-37335-2115

69-37335-67 or

69-37335-139

P5-2 Fuel System

Module Assembly

69-37335-2067 or 18 1

69-37335-2139

69-37335-68 or

69-37335-143

P5-2 Fuel System

Module Assembly

69-37335-2068 or 19 1

69-37335-2143

69-37335-71 or

69-37335-140

P5-2 Fuel System

Module Assembly

69-37335-2071 or 24 1

69-37335-2140

69-37335-72 or

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2072 or 25 1

69-37335-2128

69-37335-79 or

69-37335-119

P5-2 Fuel System

Module Assembly

69-37335-2079 or 26 1

69-37335-2119

69-37335-87 or

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2087 or 27 1

69-37335-2128

69-37335-93 or

69-37335-115

P5-2 Fuel System

Module Assembly

69-37335-2093 or 20 1

69-37335-2115

69-37335-95 or

69-37335-113

P5-2 Fuel System

Module Assembly

69-37335-2095 or 21 1

69-37335-2113

69-37335-118 or

69-37335-128

P5-2 Fuel System

Module Assembly

69-37335-2118 or 28 1

69-37335-2128

69-37335-127 or

69-37335-133

P5-2 Fuel System

Module Assembly

69-37335-2127 or 22 1

69-37335-2133

FIGURE 4: INSTALLATION OF THE P5-2 FUEL SYSTEM MODULE

(SHEET 2 OF 2)

BOEING PROPRIETARY -

Copyright © Unpublished Work - See page 1 for details.

Original Issue: August 02, 2010

737-28A1210

47 of 47

BOEING SERVICE BULLETIN 737-28A1210

ALERT ALERT