### 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.9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2010 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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 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, KC-10, KDC-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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 1 of 47 3.0BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 2 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**

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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 3 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 4 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**

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### 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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 5 of 47**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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 6 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 7 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 8 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**

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### 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.
**DESCRIPTION CONFIGURATION**  **GROUP** Airplanes with different P5-2 Fuel System Module part number.

- 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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 9 of 47**DESCRIPTION CONFIGURATION**  **GROUP** Airplanes with different P5-2 Fuel System Module part number.

- 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

Airplane Models: 737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 **Group Variable Number** 1 PA001 - PA022 1 PA099 1 PA231 - PA232

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 10 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**1 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 15 PG584 - PG586 1 PG621 - PG630 1 PG651 - PG652 1 PG701 - PG705 15 PH001 15 PH011 - PH013 15 PH021 - PH024 1 PH701 - PH715 1 PH731 - PH732 1 PH741 - PH742 15 PH743 1 PJ001 - PJ002 14 PJ003 17 PJ004 - PJ006 26 PJ007 - PJ009 1 PJ031 - PJ032 1 PJ071 - PJ072 1 PJ101 - PJ104

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 11 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**15 PJ105 - PJ109 18 PJ110 - PJ119 23 PJ201 - PJ219 10 PJ301 - PJ302 10 PJ551 - PJ561 10 PJ601 - PJ615 12 PJ811 12 PJ816 - PJ817 15 PK026 - PK028 18 PK029 15 PK041 - PK047 18 PK048 - PK053 15 PK061 - PK065 18 PK066 - PK067 25 PK068 - PK069 24 PK070 15 PK081 18 PK082 15 PK091 18 PK092 - PK099 15 PK101 - PK103 15 PK111 - PK119 18 PK120 15 PK141 - PK146 18 PK201 - PK204 18 PK211 - PK215 21 PK216 - PK220 18 PK221 - PK223 18 PK231 - PK241 17 PK251 - PK256 26 PK257 17 PK258 18 PK271 - PK274

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 12 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**18 PK281 - PK289 18 PK291 18 PK301 - PK318 18 PK341 18 PK351 - PK355 25 PK356 - PK360 19 PK361 18 PK391 18 PK431 - PK433 18 PK451 - PK452 18 PK461 - PK469 18 PK495 18 PK501 25 PK502 - PK503 18 PK504 18 PK511 - PK514 21 PK515 18 PK519 18 PK521 - PK525 21 PK526 - PK527 22 PK528 18 PK541 - PK564 21 PK565 18 PK581 18 PK591 - PK599 18 PK601 - PK606 27 PK607 - PK610 18 PK611 - PK617 18 PK621 - PK637 18 PK641 - PK642 25 PK661 18 PK662 - PK664 21 PK665 - PK666

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 13 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**18 PK671 - PK680 21 PK681 18 PK691 - PK697 18 PK711 - PK716 18 PK731 - PK749 21 PK750 - PK765 18 PK771 - PK779 18 PK801 - PK804 18 PK819 - PK827 18 PK830 18 PK861 - PK863 25 PK871 - PK874 18 PK881 - PK884 17 PK901 - PK932 20 PK933 - PK938 17 PK971 - PK974 18 PL001 - PL028 18 PL061 18 PL081 18 PL101 - PL113 18 PL151 18 PL171 - PL172 18 PL201 - PL203 18 PL221 18 PL401 - PL408 25 PL409 - PL410 18 PL411 25 PL412 18 PL413 - PL417 18 PL421 18 PL441 18 PL451 - PL454 21 PL455 - PL456

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 14 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**18 PL471 18 PL491 26 PL501 - PL506 18 PL551 - PL562 18 PL581 27 PL601 - PL603 18 PL611 18 PL621 - PL623 21 PL624 - PL625 22 PL626 27 PL631 - PL632 1 PL711 - PL712 1 PL716 16 PL717 - PL720 19 PL721 - PL725 15 PL726 - PL730 18 PL731 - PL735 15 PL736 - PL743 18 PL744 - PL745 21 PL746 - PL747 15 PL756 15 PL758 15 PL761 - PL766 18 PL767 - PL770 15 PL781 - PL782 18 PL783 - PL788 15 PL793 1 PL801 - PL803 18 PM001 - PM006 18 PM016 - PM017 18 PM021 - PM023 18 PM051 - PM062 21 PM063 - PM066

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 15 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**27 PM101 - PM107 18 PM108 - PM119 27 PM141 - PM142 21 PM171 21 PM181 21 PM251 - PM255 21 PM281 - PM283 10 PM381 - PM399 10 PM401 - PM417 10 PM541 - PM564 27 PN001 - PN002 18 PN021 - PN035 21 PN036 - PN043 18 PN081 - PN086 18 PN101 - PN112 21 PN113 - PN117 21 PN131 - PN163 21 PN401 - PN420 21 PN431 - PN433 21 PN451 - PN456 21 PN471 - PN472 22 PN473 - PN474 21 PN481 21 PN491 - PN493 21 PN501 22 PN502 21 PN511 22 PN512 28 PN521 2 PP001 - PP037 6 PP038 - PP047 12 PP048 - PP054 2 PP101 - PP126

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 16 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**6 PP127 - PP139 10 PP140 - PP160 2 PP161 - PP169 2 PP181 - PP187 6 PP188 - PP194 10 PP195 - PP199 2 PP201 - PP204 6 PP205 2 PP221 2 PP231 - PP243 2 PP281 - PP286 2 PP301 - PP305 2 PP351 - PP352 6 PP353 2 PP376 - PP384 6 PP391 - PP393 4 PP401 - PP429 9 PP430 - PP440 3 PP471 - PP475 3 PP501 - PP504 12 PP505 - PP520 2 PP521 - PP522 2 PP631 - PP634 2 PP651 - PP652 2 PP671 - PP689 3 PP690 - PP694 2 PP695 - PP699 2 PP701 - PP706 3 PP707 - PP716 2 PP717 - PP726 6 PP727 - PP733 2 PP771 - PP777 6 PP778 - PP779

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 17 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**2 PP801 - PP804 10 PP805 - PP808 2 PP821 - PP827 2 PP831 - PP836 6 PP837 - PP844 10 PP845 2 PP846 - PP848 2 PP851 6 PP852 2 PP861 - PP870 10 PP871 - PP877 2 PP891 - PP899 2 PP901 - PP909 6 PP910 - PP913 10 PP914 - PP930 2 PP931 - PP934 6 PP935 - PP936 2 PP946 - PP948 2 PP951 - PP952 2 PP961 - PP965 10 PP966 - PP967 2 PP981 - PP982 10 PP983 - PP990 2 PP991 10 PP993 2 PQ001 - PQ012 10 PQ013 - PQ016 2 PQ026 - PQ037 10 PQ038 - PQ041 5 PQ051 - PQ062 7 PQ063 - PQ065 11 PQ066 - PQ085 5 PQ086 - PQ088

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 18 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**7 PQ089 - PQ090 11 PQ091 - PQ092 2 PQ101 - PQ115 6 PQ116 - PQ133 10 PQ134 - PQ199 10 PQ201 - PQ202 10 PQ221 - PQ230 2 PQ231 - PQ232 6 PQ233 10 PQ234 - PQ237 6 PQ241 - PQ243 10 PQ251 - PQ267 10 PQ281 - PQ299 6 PQ301 - PQ307 10 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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 19 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**10 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 11 PS701 - PS706 10 PS751 - PS799 10 PS811 10 PS836 - PS837 10 PS841 - PS846 10 PS851 - PS852 10 PS856 12 PS861 - PS863 12 PS866 - PS868 10 PS871 - PS874 10 PS896 - PS897 10 PS901 - PS941 12 PS956 - PS957

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 20 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**10 PS961 - PS963 10 PS971 - PS978 10 PT001 - PT015 10 PT021 - PT031 10 PT041 - PT064 10 PT101 - PT105 13 PT121 - PT138 10 PT146 - PT148 10 PT161 - PT170 10 PT181 - PT188 10 PT211 - PT220 10 PT295 10 PT301 - PT309 11 PT331 - PT360 10 PT381 - PT399 10 PT401 - PT438 10 PT501 - PT517 11 PT561 - PT565 10 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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 21 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**10 PT996 10 PU001 - PU025 10 PU301 10 PU311 - PU313 12 PV001 8 PV002 - PV007 12 PV008 - PV055 10 PV201 - PV209 10 PV226 - PV229 11 PV231 - PV237 10 PV271 - PV272 10 PV281 - PV287 10 PV296 10 PV301 - PV302 10 PV351 10 PV356 - PV357 6 PW001 - PW002 10 PW003 - PW05410 PW061 - PW068 10 PW072 10 PW086 - PW088 10 PW091 - PW09410 PW101 - PW102 10 PW106 10 PW111 - PW120 10 PW156 - PW15711 PW161 - PW171 10 PW201 - PW252 10 PW261 - PW268 10 PW271 - PW276 10 PW278 10 PW281 - PW292 12 PW293

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 22 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**10 PW296 10 PW301 - PW32710 PW401 - PW408 10 PW411 - PW418 10 PW421 - PW42410 PW431 - PW435 10 PW441 - PW450 10 PW461 - PW46710 PW501 - PW50412 PW511 - PW522 12 PW524 10 PW525 - PW529 12 PW530 - PW54710 PW548 - PW550 12 PW556 - PW55710 PW561 - PW56410 PW571 - PW576 10 PW591 - PW596 10 PW611 - PW622 10 PW631 - PW63710 PW661 - PW662 10 PW681 - PW683 12 PW701 - PW702 10 PW711 - PW71710 PW741 - PW742 10 PW761 10 PW771 10 PW831 10 PW851 - PW856 1 PX071 1 PX701 1 PY001 - PY008 1 PY021

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 23 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**15 PY022 1 PY031 15 PY036 - PY037 15 PY046 - PY047 18 PY048 16 PY051 - PY052 19 PY053 18 PY056 - PY057 15 PY101 - PY103 15 PY111 - PY113 15 PY131 18 PY132 - PY135 15 PY141 - PY142 18 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 15 PY271 - PY273 18 PY274 - PY275 15 PY281 18 PY286 1 PY301 - PY304 1 PY321 - PY323 1 PY341 - PY346 1 PY361 - PY362 1 PY381

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 24 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group**  **Variable Number**18 PY401 21 PY409 - PY410 18 PY411 18 PY421 - PY422 18 PY441 18 PY451 18 PY461 - PY462 21 PY463 21 PY591 - PY595 18 PY611 - PY612 18 PY621 18 PY631 18 PY651 18 PY671 - PY672 21 PY721 18 PY741 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: Description**  **Service Bulletin Company**  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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 25 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT 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 Zone**  **Model** 1-1 737-100, 737-200, 737-200C **Group 2-5, 7, 9:**
**Affected Maintenance Zones Zone**  **Model** 101 737-300

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 26 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group 6, 12:** 
**Affected Maintenance Zones Zone**  **Model** 101 737-300, 737-400 **Group 8:**
**Affected Maintenance Zones Zone**  **Model** 101 737-400 **Group 10-11:**
**Affected Maintenance Zones Zone**  **Model** 101 737-300, 737-400, 737-500 **Group 13:**
**Affected Maintenance Zones Zone**  **Model** 101 737-500 **Group 14, 17, 20, 22-28:**
**Affected Maintenance Zones Zone**  **Model** 1-1 737-200 **Group 15-16, 18-19, 21:**
**Affected Maintenance Zones Zone**  **Model** 1-1 737-200, 737-200C **E. Compliance** The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 27 of 47 **BOEING SERVICE BULLETIN 737-28A1210 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) Task-Hours**  **Number of Persons**  **Figure Task** 
0.25 0.25 1 1 Remove P5-2 Module 0.25 0.25 1 2 Install P5-2 Module 0.5 0.5 1
- Do Functional Test 1.0 1.0 TOTAL FOR EACH AIRPLANE

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 28 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Group 14-28:**  **Elapsed Time (Hours)**  **Task-Hours Number of**  **Persons Figure**  **Task**
0.25 0.25 1 3 Remove P5-2 Module 0.25 0.25 1 4 Install P5-2 Module 0.5 0.5 1
- Do Functional Test 1.0 1.0 TOTAL FOR EACH AIRPLANE **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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 29 of 47 **BOEING SERVICE BULLETIN 737-28A1210 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:
**Title Drawing Number** 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: **Chapter-Section Publication**  (a) 737 FAA Approved Airplane Flight Manual28-22 737 Illustrated Parts Catalog 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:

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 30 of 47 **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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 31 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 32 of 47 **BOEING SERVICE BULLETIN 737-28A1210 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:
**Notes Existing Part**  **Number Name**  **QTY Airplane**  **Group New Part Number**  (a)(b) 69-37335-31 or 69-37335-134 P5-2 Fuel System Module Assembly 1
- 69-37335-2031 or 69-37335-2134 (a)(b) 69-37335-32 or 69-37335-135 P5-2 Fuel System Module Assembly 1
- 69-37335-2032 or 69-37335-2135 (a)(b) 69-37335-39 or 69-37335-136 P5-2 Fuel System Module Assembly 1
- 69-37335-2039 or 69-37335-2136 (a)(b) 69-37335-43 or 69-37335-115 P5-2 Fuel System Module Assembly 1 14 69-37335-2043 or 69-37335-2115 (a)(b) 69-37335-45 or 69-37335-137 P5-2 Fuel System Module Assembly 1 15 69-37335-2045 or 69-37335-2137 (a)(b) 69-37335-51 or 69-37335-117 P5-2 Fuel System Module Assembly 1 16 69-37335-2051 or 69-37335-2117 (a)(b)(c) 69-37335-58 or 69-37335-138 P5-2 Fuel System Module Assembly 1 23 69-37335-2058 or 69-37335-2138 (a)(b) 69-37335-66 or 69-37335-115 P5-2 Fuel System Module Assembly 1 17 69-37335-2066 or 69-37335-2115 (a)(b) 69-37335-67 or 69-37335-139 P5-2 Fuel System Module Assembly 1 18 69-37335-2067 or 69-37335-2139 (a)(b) 69-37335-68 or 69-37335-143 P5-2 Fuel System Module Assembly 1 19 69-37335-2068 or 69-37335-2143 (a)(b)(c) 69-37335-71 or 69-37335-140 P5-2 Fuel System Module Assembly 1 24 69-37335-2071 or 69-37335-2140 (a)(b)(c) 69-37335-72 or 69-37335-128 P5-2 Fuel System Module Assembly 1 25 69-37335-2072 or 69-37335-2128

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 33 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Notes**  **Existing Part Number**  **Name QTY**  **Airplane Group**  **New Part Number** (a)(b)(c) 69-37335-79 or 69-37335-119 P5-2 Fuel System Module Assembly 1 26 69-37335-2079 or 69-37335-2119 (a)(b)(c) 69-37335-87 or 69-37335-128 P5-2 Fuel System Module Assembly 1 27 69-37335-2087 or 69-37335-2128 (a)(b) 69-37335-88 or 69-37335-129 P5-2 Fuel System Module Assembly 1 2 69-37335-2088 or 69-37335-2129 (a)(b) 69-37335-93 or 69-37335-115 P5-2 Fuel System Module Assembly 1 20 69-37335-2093 or 69-37335-2115 (a)(b) 69-37335-95 or 69-37335-133 P5-2 Fuel System Module Assembly 1 21 69-37335-2095 or 69-37335-2133 (a)(b) 69-37335-96 or 69-37335-117 P5-2 Fuel System Module Assembly 1
- 69-37335-2096 or 69-37335-2117 (a)(b)(c) 69-37335-98 or 69-37335-128 P5-2 Fuel System Module Assembly 1
- 69-37335-2098 or 69-37335-2128 (a)(b)(c) 69-37335-100 P5-2 Fuel System Module Assembly 1
- 69-37335-2100 (a)(b)(c) 69-37335-105 or 69-37335-131 P5-2 Fuel System Module Assembly 1 3 69-37335-2105 or 69-37335-2131 (a)(b) 69-37335-111 or 69-37335-132 P5-2 Fuel System Module Assembly 1 4 69-37335-2111 or 69-37335-2132 (a)(b) 69-37335-112 or 69-37335-130 P5-2 Fuel System Module Assembly 1 5 69-37335-2112 or 69-37335-2130 (a)(b) 69-37335-115 P5-2 Fuel System Module Assembly 1
- 69-37335-2115 (a)(b) 69-37335-117 P5-2 Fuel System Module Assembly 1
- 69-37335-2117 (a)(b)(c) 69-37335-118 or 69-37335-128 P5-2 Fuel System Module Assembly 1 28 69-37335-2118 or 69-37335-2128 (a)(b)(c) 69-37335-119 P5-2 Fuel System Module Assembly 1
- 69-37335-2119 (a)(b) 69-37335-123 or 69-37335-129 P5-2 Fuel System Module Assembly 1 6 69-37335-2123 or 69-37335-2129 (a)(b) 69-37335-124 or 69-37335-130 P5-2 Fuel System Module Assembly 1 7 69-37335-2124 or 69-37335-2130 (a)(b) 69-37335-125 or 69-37335-131 P5-2 Fuel System Module Assembly 1 8 69-37335-2125 or 69-37335-2131 (a)(b) 69-37335-126 or 69-37335-132 P5-2 Fuel System Module Assembly 1 9 69-37335-2126 or 69-37335-2132

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 34 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT Notes**  **Existing Part Number**  **Name QTY**  **Airplane Group**  **New Part Number** (a)(b) 69-37335-127 or 69-37335-133 P5-2 Fuel System Module Assembly 1 22 69-37335-2127 or 69-37335-2133 (a)(b)(c) 69-37335-128 P5-2 Fuel System Module Assembly 1
- 69-37335-2128 (a)(b) 69-37335-129 P5-2 Fuel System Module Assembly 1 10 69-37335-2129 (a)(b) 69-37335-130 P5-2 Fuel System Module Assembly 1 11 69-37335-2130 (a)(b)(c) 69-37335-131 P5-2 Fuel System Module Assembly 1 12 69-37335-2131 (a)(b) 69-37335-132 P5-2 Fuel System Module Assembly 1 13 69-37335-2132 (a)(b) 69-37335-133 P5-2 Fuel System Module Assembly 1
- 69-37335-2133 (a)(b) 69-37335-134 P5-2 Fuel System Module Assembly 1
- 69-37335-2134 (a)(b) 69-37335-135 P5-2 Fuel System Module Assembly 1
- 69-37335-2135 (a)(b) 69-37335-136 P5-2 Fuel System Module Assembly 1
- 69-37335-2136 (a)(b) 69-37335-137 P5-2 Fuel System Module Assembly 1
- 69-37335-2137 (a)(b)(c) 69-37335-138 P5-2 Fuel System Module Assembly 1
- 69-37335-2138 (a)(b) 69-37335-139 P5-2 Fuel System Module Assembly 1
- 69-37335-2139 (a)(b)(c) 69-37335-140 P5-2 Fuel System Module Assembly 1
- 69-37335-2140 (a)(b) 69-37335-143 P5-2 Fuel System Module Assembly 1
- 69-37335-2143 (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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 35 of 47 **BOEING SERVICE BULLETIN 737-28A1210 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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 36 of 47 **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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 37 of 47 **BOEING SERVICE BULLETIN 737-28A1210 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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1210 38 of 47 **BOEING SERVICE BULLETIN 737-28A1210 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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 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.
**MORE DATA QTY**  **IDENTIFICATION PART NAME**  **TASK STEP**  From the P5 forward overhead panel. Refer to 737-300/400/500 AMM 28-22-43 as an accepted procedure. 1 69-37335-( ) (a) P5-2 Fuel Sys- tem Module Remove 1

**FIGURE 1: 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 40 of 47 **BOEING SERVICE BULLETIN 737-28A1210 ALERT**  **ALERT MORE DATA**  **QTY IDENTIFICATION**  **PART NAME TASK**  **STEP** (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 Part Name**  **QTY Group** 
69-37335-88 or 69-37335-129 P5-2 Fuel System Module Assembly 1 2
69-37335-105 or 69-37335-131 P5-2 Fuel System Module Assembly 1 3
69-37335-111 or 69-37335-132 P5-2 Fuel System Module Assembly 1 4
69-37335-112 or 69-37335-130 P5-2 Fuel System Module Assembly 1 5
69-37335-123 or 69-37335-129 P5-2 Fuel System Module Assembly 1 6
69-37335-124 or 69-37335-130 P5-2 Fuel System Module Assembly 1 7
69-37335-125 or 69-37335-131 P5-2 Fuel System Module Assembly 1 8
69-37335-126 or 69-37335-132 P5-2 Fuel System Module Assembly 1 9
69-37335-129 P5-2 Fuel System Module Assembly 1 10
69-37335-130 P5-2 Fuel System Module Assembly 1 11
69-37335-131 P5-2 Fuel System Module Assembly 1 12
69-37335-132 P5-2 Fuel System Module Assembly 1 13

**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.
**MORE DATA QTY**  **IDENTIFICATION PART NAME**  **TASK STEP**  In the P5 forward overhead panel. Refer to 737-300/400/500 AMM 28- 22-43 as an accepted procedure. 1 69-37335-( ) (a) P5-2 Fuel System Module Install 1

**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 MORE DATA**  **QTY IDENTIFICATION**  **PART NAME TASK**  **STEP** (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 Part Name**  **QTY Group**  **New Part Number**
69-37335-88 or 69-37335-129 P5-2 Fuel System Module Assembly 1 2 69-37335-2088 or 69-37335-2129 69-37335-105 or 69-37335-131 P5-2 Fuel System Module Assembly 1 3 69-37335-2105 or 69-37335-2131 69-37335-111 or 69-37335-132 P5-2 Fuel System Module Assembly 1 4 69-37335-2111 or 69-37335-2132 69-37335-112 or 69-37335-130 P5-2 Fuel System Module Assembly 1 5 69-37335-2112 or 69-37335-2130 69-37335-123 or 69-37335-129 P5-2 Fuel System Module Assembly 1 6 69-37335-2123 or 69-37335-2129 69-37335-124 or 69-37335-130 P5-2 Fuel System Module Assembly 1 7 69-37335-2124 or 69-37337-2130 69-37335-125 or 69-37335-131 P5-2 Fuel System Module Assembly 1 8 69-37335-2125 or 69-37335-2131 69-37335-126 or 69-37335-132 P5-2 Fuel System Module Assembly 1 9 69-37335-2126 or 69-37335-2132 69-37335-129 P5-2 Fuel System Module Assembly 1 10 69-37335-2129
69-37335-130 P5-2 Fuel System Module Assembly 1 11 69-37335-2130
69-37335-131 P5-2 Fuel System Module Assembly 1 12 69-37335-2131
69-37335-132 P5-2 Fuel System Module Assembly 1 13 69-37335-2132

**FIGURE 2: 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 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.
**MORE DATA QTY**  **IDENTIFICATION PART NAME**  **TASK STEP**  From the P5 forward overhead panel. Refer to 737-100/200 AMM28-22-122 as an accepted procedure. 1 69-37335-( ) (a) P5-2 Fuel Sys- tem Module Remove 1

**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 MORE DATA**  **QTY IDENTIFICATION**  **PART NAME TASK**  **STEP** (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 Part Name**  **QTY Group** 
69-37335-43 or 69-37335-115 P5-2 Fuel System Module Assembly 1 14
69-37335-45 or 69-37335-137 P5-2 Fuel System Module Assembly 1 15
69-37335-51 or 69-37335-117 P5-2 Fuel System Module Assembly 1 16
69-37335-58 or 69-37335-138 P5-2 Fuel System Module Assembly 1 23
69-37335-66 or 69-37335-115 P5-2 Fuel System Module Assembly 1 17
69-37335-67 or 69-37335-139 P5-2 Fuel System Module Assembly 1 18
69-37335-68 or 69-37335-143 P5-2 Fuel System Module Assembly 1 19
69-37335-71 or 69-37335-140 P5-2 Fuel System Module Assembly 1 24
69-37335-72 or 69-37335-128 P5-2 Fuel System Module Assembly 1 25
69-37335-79 or 69-37335-119 P5-2 Fuel System Module Assembly 1 26
69-37335-87 or 69-37335-128 P5-2 Fuel System Module Assembly 1 27
69-37335-93 or 69-37335-115 P5-2 Fuel System Module Assembly 1 20
69-37335-95 or 69-37335-133 P5-2 Fuel System Module Assembly 1 21
69-37335-118 or 69-37335-128 P5-2 Fuel System Module Assembly 1 28
69-37335-127 or 69-37335-133 P5-2 Fuel System Module Assembly 1 22

**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.
**MORE DATA QTY**  **IDENTIFICATION PART NAME**  **TASK STEP**  In the P5 forward overhead panel. Refer to 737-100/200 AMM 28-22- 122 as an accepted procedure. 1 69-37335-( ) (a) P5-2 Fuel System Module Install 1

(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**  **Part Name QTY**  **Group New Part Number** 
69-37335-43 or 69-37335-115 P5-2 Fuel System Module Assembly 1 14 69-37335-2043 or 69-37335-2115 69-37335-45 or 69-37335-137 P5-2 Fuel System Module Assembly 1 15 69-37335-2045 or 69-37335-2137 69-37335-51 or 69-37335-117 P5-2 Fuel System Module Assembly 1 16 69-37335-2051 or 69-37335-2117 69-37335-58 or 69-37335-138 P5-2 Fuel System Module Assembly 1 23 69-37335-2058 or 69-37335-2138 69-37335-66 or 69-37335-115 P5-2 Fuel System Module Assembly 1 17 69-37335-2066 or 69-37335-2115 69-37335-67 or 69-37335-139 P5-2 Fuel System Module Assembly 1 18 69-37335-2067 or 69-37335-2139 69-37335-68 or 69-37335-143 P5-2 Fuel System Module Assembly 1 19 69-37335-2068 or 69-37335-2143 69-37335-71 or 69-37335-140 P5-2 Fuel System Module Assembly 1 24 69-37335-2071 or 69-37335-2140 69-37335-72 or 69-37335-128 P5-2 Fuel System Module Assembly 1 25 69-37335-2072 or 69-37335-2128 69-37335-79 or 69-37335-119 P5-2 Fuel System Module Assembly 1 26 69-37335-2079 or 69-37335-2119 69-37335-87 or 69-37335-128 P5-2 Fuel System Module Assembly 1 27 69-37335-2087 or 69-37335-2128 69-37335-93 or 69-37335-115 P5-2 Fuel System Module Assembly 1 20 69-37335-2093 or 69-37335-2115 69-37335-95 or 69-37335-113 P5-2 Fuel System Module Assembly 1 21 69-37335-2095 or 69-37335-2113 69-37335-118 or 69-37335-128 P5-2 Fuel System Module Assembly 1 28 69-37335-2118 or 69-37335-2128 69-37335-127 or 69-37335-133 P5-2 Fuel System Module Assembly 1 22 69-37335-2127 or 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**