June 13, 2002

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ALERT ALERT

Commercial

Airplane

Group 737

ALERT ALERT

Service Bulletin

Number: 737-53A1241

Date: June 13, 2002

ATA System: 5311

SJC

SUBJECT: FUSELAGE - Frames and Bulkheads - Sta 291.5 Frame Inspection at Stringer 16R - 

Forward Galley Door Cutout

BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET

Copyright © 2002 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Unpublished Work - All Rights Reserved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, BBJ, DC-8, DC-9, 

DC-10, MD-10, MD-11, MD-80, MD-88, MD-90, and the red-white-and-blue 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.
 BLANK PAGE

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

BLANK PAGE
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ALERT ALERT

Commercial

Airplane

Group 737

ALERT ALERT

Service Bulletin

Number: 737-53A1241 Summary

Date: June 13, 2002

ATA System: 5311

SJC

SUBJECT: FUSELAGE - Frames and Bulkheads - Sta 291.5 Frame Inspection at Stringer 16R - 

Forward Galley Door Cutout

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

None.

BACKGROUND

This service bulletin gives instructions to do an inspection of the Sta 291.5 frame near the forward galley door 

cutout for cracks at stringer 16R. Accomplishment of this service bulletin will prevent a possible rapid 

decompression and potential separation of the forward galley door from the airplane.

Boeing has received a report of one crack on a 737-200 airplane on the Sta 291.5 frame. The airplane had 

accumulated 66,043 flight cycles and 45,989 flight hours. The Sta 291.5 frame is a body frame forward of the 

forward galley door cutout. The crack was found from the aft side of the frame web at the cutout for the doorstop 

intercostal strap at stringer 16R.

Undetected or remaining cracks in the frame will propagate by normal fatigue due to cyclic cabin pressure 

loading. Continued operation with undetected crack(s) could lead to a severed frame. Loss of the frame would 

render the doorstops ineffective and result in a possible rapid decompression and potential separation of the 

forward galley door from the airplane.

Boeing Service Related Problem (SRP) 737-SRP-53-0149 is related to this service bulletin.

ACTION

Get access to the aft side of the Sta 291.5 frame at stringer 16R. Do an eddy current inspection of the frame 

web around the cutout for the doorstop intercostal strap at stringer 16R.

EFFECTIVITY

737-100/-200/-200C/-300/-400/-500 airplanes line numbers 1 through 3132, except airplanes PJ201 thru 

PJ219.
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

COMPLIANCE

Airplanes under 50,000 flight cycles, accomplish the inspection prior to the airplane accumulating 50,000 flight 

cycles. Repeat the inspections at 4,500 flight cycle intervals.

Airplanes over 47,750 flight cycles accomplish the inspection within 2,250 flight cycles from release of the 

service bulletin. Repeat the inspections at 4,500 flight cycle intervals.

INDUSTRY SUPPORT INFORMATION

At the time of release of this service bulletin, warranty remedies have not been determined. A subsequent 

revision or Information Notice will address the warranty remedies available, if any.

MANPOWER

MATERIAL INFORMATION

None.

Airplanes Total Task Hours Elapsed Hours

All 21.5 7.75

V74566

FORWARD GALLEY DOORWAY

EXAMINE STA 291.5 FRAME

FOR CRACKS AT S-16R
June 13, 2002

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ALERT ALERT

Commercial

Airplane

Group 737

ALERT ALERT

Service Bulletin

Number: 737-53A1241

Date: June 13, 2002

ATA System: 5311

SJC

SUBJECT: FUSELAGE - Frames and Bulkheads - Sta 291.5 Frame Inspection at Stringer 16R - 

Forward Galley Door Cutout

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.

Airplane models:

737-100 737-200 737-200C 737-300

737-400 737-500

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

ACCESSAIR (CCE)

1 PK936–PK937

AEGEAN CRONUS AIRLINES (CRM)

1 PM392 PP517 PP929 PS608

PW002 PW157

AER LINGUS (ARL)

1 PT161–PT168 PW592–PW596

AERGO CAPITAL LIMITED (CLJ)

1 PK772 PK820

AERIS (AEY)

1 PM381 PP838 PQ307 PQ345–PQ346
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

AERO CONTINENTE (COH)

1 PA002 PG041 PG218 PG224

PG305 PG310–PG311 PG574 PJ002–PJ003

PL758

AERO CONTINENTE CHILE (CCL)

1 PG021 PG219 PG308 PJ102

AERO CONTROLS (AEO)

1 PG312

AERO ZAMBIA (AOZ)

1 PG037 PY001

AEROFLOT (ARO)

1 PW441–PW450

AEROLINEAS ARGENTINAS (ARG)

1 PG584–PG585 PH705–PH708 PH741–PH743 PK102–PK103

PK233 PK235 PK735–PK737 PK739

PK747 PK750–PK751 PK755 PK759–PK765

PL712 PY007

AEROPOSTALE (FPO)

1 PP832 PP913 PQ301 PS642

AEROSERVICE (SRI)

1 PL742–PL743

AEROSUCRE (SUS)

1 PY341

AEROSVIT (UKA)

1 PK564 PQ284

AIGLE AZUR (AZU)

1 PK215 PL504 PP947

AIR ALGERIE (ALG)

1 PK361 PK631 PK633–PK634 PL717–PL725

PY051 PY053

AIR ANATOLIA (TOI)

1 PW282 PW285

AIR AUSTRAL (AUX)

1 PR096 PS621 PT215

AIR BELGIUM (ABL)

1 PW504

AIR BERLIN (BER)

1 PJ811 PW524 PW528–PW530
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

AIR CANADA (ACN)

1 PK358 PK671 PK674–PK675 PK677–PK681

PK822 PK881 PK884 PL401–PL417

PL764–PL770 PM141–PM142 PY152–PY154 PY421–PY422

PY441

AIR CARIBBEAN (XXC)

1 PK096 PK826 PK830

AIR CHINA (BEJ)

1 PP521–PP522 PQ361–PQ364 PQ367–PQ369 PQ371–PQ373

AIR CHINA INNER MONGOLIAN (IML)

1 PQ365–PQ366 PQ370 PS614–PS617

AIR EUROPA (ARE)

1 PP848 PQ226 PR002 PS657

PW031 PW065–PW066 PW265–PW266 PW517

PW851

AIR FRANCE (AFA)

1 PL503 PN101–PN102 PN106–PN107 PN116

PP902 PP910–PP912 PQ988 PQ990–PQ991

PS604 PS606 PT169–PT170 PT214

PT301–PT306 PT309 PT501–PT514 PU311–PU313

AIR GABON (GBN)

1 PP836 PW562 PY191

AIR GREAT WALL (GWA)

1 PM281–PM283

AIR GUINEE (GNE)

1 PY651

AIR INTER CAMEROUN (ICM)

1 PY274

AIR KAZAKSTAN (KAZ)

1 PG629 PK284 PK528 PK563

PM252

AIR MADAGASCAR (MAD)

1 PG375 PL793 PQ299

AIR MALAWI (AML)

1 PS602

AIR MALTA (MLT)

1 PL624–PL625 PQ302 PQ306 PQ791–PQ793

PS873–PS874
 

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ALERT ALERT

AIR MEDITERRANEE (AMV)

1 PG028–PG029 PG036 PY101–PY103 PY301

PY344

AIR NAMIBIA (NAM)

1 PK355 PN492

AIR NAURU (NAU)

1 PW556

AIR NEW ZEALAND (ANZ)

1 PJ117–PJ119 PR009 PR014 PR041

PR045 PR062–PR066 PR077–PR080 PR101

PS651 PS866–PS868

AIR NIPPON (ANK)

1 PJ817 PT053 PT060 PT063–PT064

PT126 PT129 PT871–PT886 PW026

AIR ONE (ADH)

1 PK432 PK933 PK938 PM410–PM411

PQ228–PQ229 PQ347–PQ348 PV232–PV233 PV236–PV237

PW041 PW043 PW052 PW054

AIR PHILIPPINES (PHP)

1 PG001 PG018 PG039 PG047

PG061–PG062 PG066 PK099 PK541–PK542

PM393–PM395

AIR PORTUGAL (TAP)

1 PP985

AIR SAHARA (SAQ)

1 PL452 PW061 PW064 PW113–PW114

AIR SENEGAL INTERNATIONAL (SNG)

1 PK274

AIR SICILIA (SNL)

1 PN109

AIR SLOVAKIA (SLO)

1 PK546

AIR TANZANIA (TNZ)

1 PP926 PY611–PY612

AIR VANUATU (VAN)

1 PQ454

AIR ZIMBABWE (ZMB)

1 PN431–PN433
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

AIRASIA (ASW)

1 PM398 PQ448 PQ972

AIRCALIN (NCI)

1 PP918

AIRFAST INDONESIA (PTF)

1 PK562 PN481 PY343

AIRTRAN (CQT)

1 PK306 PK697

AIRWORK NZ (ANX)

1 PY741

ALASKA AIRLINES (ASA)

1 PJ301–PJ302 PJ601–PJ615 PW116 PW231–PW252

PY112 PY134–PY135 PY270 PY461–PY463

PY593–PY594

ALOHA AIRLINES (ALO)

1 PK287 PK694 PK905 PK926

PK934–PK935 PL626 PM251 PM253

PN085 PN473 PN493 PY231

PY242 PY451 PY592 PY595

PY721

ALTER FINANCE (AFW)

1 PK359

AMC AVIATION (AMF)

1 PK254

AMCUR INVESTMENTS (MCB)

1 PT219

AMERICA WEST AIRLINES (AMW)

1 PL081 PL172 PL551–PL562 PP022

PP029 PP181–PP187 PP189 PP194–PP199

PP383 PP472 PP474–PP475 PP831

PP833–PP834 PP846 PP891 PP893

PP895 PP898–PP899 PP901 PP931–PP934

PP936 PR067 PS666–PS669

AMERICAN FALCON AIR (FAK)

1 PK464 PL026

AMERICANA (AMY)

1 PG276

AMERISTAR AIR CARGO (CGG)

1 PY345–PY346
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

AMTEC CORPORATION (CEF)

1 PK549

AN EXPRESS HAVA YOLLARI (EXB)

1 PY037

ANGOLA AIR CHARTER (AOH)

1 PG431

ANSETT AUSTRALIA (ANS)

1 PP908–PP909 PP914–PP915 PP923 PQ026–PQ041

PS618 PS624

ANSETT WORLDWIDE AVIATION (AWW)

1 PC003 PP892 PP894 PP896–PP897

PP903 PP920

ANTINEA AIRLINES (NTI)

1 PY006

ARAMCO ASSOCIATED COMPANY (RAS)

1 PL151 PY241 PY243

ASIANA AIRLINES (AAR)

1 PT851–PT853 PV201–PV202 PV204–PV206 PV208

PV226–PV229 PW005 PW008–PW009 PW018–PW020

PW025 PW274 PW278 PW283

PW286 PW289

AUSTRAL - CIELOS DEL SUR (ALA)

1 PN103–PN104 PN110–PN115 PN117

AVENSA (AVN)

1 PK042–PK043 PK752

AVIACSA AEROEXO (AEJ)

1 PK216–PK220 PK625–PK626 PM181

AVIATECA (AVT)

1 PK222 PL736–PL737 PL740–PL741

AVIOGENEX (AVG)

1 PN501

AXON AIRLINES (AXO)

1 PW053

BABCOCK & BROWN A/C MANAGEMENT (BBB)

1 PP845 PQ286

BAHAMASAIR (BAH)

1 PK672–PK673
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

BASIC CAPITAL MANAGEMENT (BCM)

1 PN455

BELLVIEW AIRLINES (BEB)

1 PK203 PK612 PL716

BLUE DART AVIATION (BDA)

1 PK231–PK232 PL451

BLUE PANORAMA AIRLINES (BPA)

1 PW284 PW518–PW519 PW522

BLUEBIRD CARGO (BLS)

1 PM383

BMI BRITISH MIDLAND (BMA)

1 PQ291–PQ292 PQ971 PQ974–PQ975 PQ996

PT181–PT182 PT186–PT188 PT701–PT703 PW046

PW831

BOEING (TBC)

1 PG051 PG215

BOEING 22620 HOLDINGS (BHA)

1 PL745

BOEING CAPITAL CORPORATION (ZMF)

1 PP805 PW051

BOULLIOUN AVIATION SERVICES (BOU)

1 PW855–PW856

BOURAQ AIRLINES (PTB)

1 PK255 PK501 PK913 PK918–PK920

PK931

BRA TRANSPORTES AEREOS (BRW)

1 PP907 PQ243

BRAATHENS (BRT)

1 PN451 PT002–PT008 PT010–PT015 PT022–PT025

PT029 PV351 PW573–PW576

BRITISH AIRWAYS (BAB)

1 PM399 PP841–PP842 PQ283 PQ305

PQ994–PQ995 PQ997 PR003 PR011–PR013

PT001 PT009 PT021 PT183

PT185 PT295 PT307–PT308 PT515–PT516

PW094 PW101–PW102 PW106 PW111–PW112

PW115 PW301–PW302 PW304–PW309 PW312–PW313

PW315–PW327
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

BUSINESS AEROTECH (BFI)

1 PW007

C-S AVIATION SERVICES (CSV)

1 PG206 PG304

CAMEROON AIRLINES (CAM)

1 PS627 PS872

CASINO EXPRESS AIRLINES (CIN)

1 PG279 PG436 PN083–PN084 PN086

CAYMAN AIRWAYS (CAY)

1 PJ009 PK753 PY244

CHANNEL EXPRESS (AIR SERVICES) (CEX)

1 PQ051–PQ052

CHILEAN AIR FORCE (CHF)

1 PQ053 PT996

CHINA AVIATION IMPORT/EXPORT (CSC)

1 PM545

CHINA EASTERN AIRLINES (CEA)

1 PP509 PQ977 PQ979 PQ981

PR141–PR143

CHINA SOUTHERN AIRLINES (GUN)

1 PM407–PM409 PM412 PM541–PM544 PM547

PM549 PQ407 PQ479–PQ480 PR121–PR122

PS631 PS836–PS837 PS841–PS846 PT041

PT043–PT048 PT052

CHINA SOUTHWEST AIRLINES (XIN)

1 PP631–PP634 PQ401–PQ406 PQ408–PQ410 PS811

CHINA UNITED AIRLINES (CUL)

1 PP728–PP729 PQ288–PQ289 PS609–PS610 PS896–PS897

CHINA XINHUA AIRLINES (XIH)

1 PM546 PQ264 PQ804–PQ805 PR001

PS856 PW852–PW854

CHINA XINJIANG AIRLINES (XIJ)

1 PM548

CHINA YUNNAN AIRLINES (YUN)

1 PP651–PP652 PQ263 PQ411–PQ412 PQ414–PQ418

PS622–PS623 PS628
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

COMAIR (CML)

1 PG353–PG354 PG356 PK734 PK738

PK744 PK748 PK754 PK758

PK907

CONTINENTAL AIRLINES (CAL)

1 PA011 PG056 PG621 PG624

PP671–PP699 PP701–PP726 PP730 PP732–PP733

PQ432–PQ438 PT801–PT834 PT901–PT930 PT971–PT973

COPA AIRLINES (COP)

1 PJ107 PJ112 PK213–PK214 PK465–PK467

PK514–PK515 PK617 PY201

CORSAIR (COR)

1 PQ224 PW661–PW662

CSA (CSA)

1 PT617–PT621 PT981–PT985 PV302 PW038–PW039

PW276 PW431–PW435

DEBIS AIRFINANCE (DEA)

1 PL746

DELTA AIR LINES (DAL)

1 PK611 PK613 PL221 PN131–PN163

PN401–PN404 PN407–PN420 PP002 PP021

PP023 PP231–PP243 PP473 PP503

PP506 PQ086–PQ087 PQ231–PQ233 PQ236–PQ237

DEUTSCHE BA (DBA)

1 PR015–PR017 PR021–PR030 PS961–PS963

EASYJET (EZY)

1 PM382 PP847 PQ221 PQ223

PR161–PR167 PR169–PR172

EASYJET SWITZERLAND (TEB)

1 PQ225 PQ431 PR168

EG&G TECHNICAL SERVICES (EGN)

1 PL763

EGYPTAIR (EGP)

1 PK257–PK258 PT561–PT565

ESTAFETA (EST)

1 PY056–PY057 PY131

ESTONIAN AIR (ENA)

1 PT716–PT717
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

ETHIOPIAN AIRLINES (ETH)

1 PM254 PN512

EURALAIR (ERA)

1 PV234 PY004

EURO SUN AIRLINES (EUU)

1 PK756

EUROPE AIRPOST (EUE)

1 PP392 PP925 PP951–PP952 PQ222

PQ421 PQ771–PQ772 PS607 PS641

PS643–PS644

EUROPEAN AVIATION LIMITED (EUL)

1 PK044–PK046 PK048–PK050 PK052–PK053 PY272–PY273

PY275

EUROPEAN CAPITAL CORP. (ECC)

1 PY321

EXECUTIVE JET AIRCRAFT COMPANY (EXF)

1 PL441

FACTS AIR (FAD)

1 PX701

FALCON AIR (FLK)

1 PS636–PS638

FALCON AIR EXPRESS (FAX)

1 PP801–PP802

FALCONBRIDGE (NAD)

1 PY002

FAUCETT (FCT)

1 PC002 PG048

FEDERATIVE REPUBLIC OF BRAZIL (BRZ)

1 PK068–PK069

FIRST AIR (BRS)

1 PY132–PY133 PY281

FISCHER AIR (FIH)

1 PS630 PS871 PS973

FLASH AIRLINES (HEA)

1 PQ294 PQ481

FLIGHT SERVICES GROUP (FSG)

1 PS862
 

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ALERT ALERT

FRONTIER AIRLINES (FRO)

1 PK495 PK872–PK873 PL622–PL623 PN105

PN108 PP305 PP471 PP508

PP514 PP516 PQ297 PQ332

PQ341–PQ344 PQ451 PQ487 PQ982

PR005 PR007 PS653

FUTURA (FUA)

1 PW034–PW035 PW047–PW048 PW118 PW501–PW502

GARUDA INDONESIA (GIA)

1 PR061 PR068–PR072 PT681–PT685 PV301

PW022 PW028 PW036 PW067

PW272 PW461–PW467 PW525

GB AIRWAYS (GBA)

1 PP520 PR091–PR092 PS861 PW117

PW119–PW120

GE CAPITAL CORPORATION (GEF)

1 PG209 PG220–PG221 PG651–PG652 PK026–PK027

PK468 PW273

GENERIC CUSTOMER/SUPPLIER (XXX)

1 PG217 PN454

GERMANIA (GER)

1 PQ234–PQ235

GO FLY (GFL)

1 PM387–PM388 PM391 PP510 PP518

PP840 PP843–PP844 PP916 PQ285

PR004 PS652 PS971 PS974–PS978

GPA GROUP (GUI)

1 PK252 PK256

GRANDAIR (GIW)

1 PG228

GUANGXI AIRLINES (GUX)

1 PT042 PT049 PT061–PT062

GUND BUSINESS ENTERPRISES (GUD)

1 PL001

HAINAN AIRLINES (HNA)

1 PQ473–PQ475 PS611 PS613 PV203

PV356–PV357 PW086–PW088 PW093

HAPAG-LLOYD FLUG (HAP)

1 PT101–PT105 PW511 PW514
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

HEWA BORA AIRWAYS (EXD)

1 PG274

ICELANDAIR (ICE)

1 PP948 PW564

ILFC (ILF)

1 PQ241 PQ447

INDIAN AIR FORCE (IDF)

1 PH712–PH713 PM016–PM017

INDIAN AIRLINES (IND)

1 PK237–PK240 PM001–PM006 PY631

INTER AIR (ITI)

1 PY046–PY047

INTERLEASE AVIATION (ILA)

1 PG352

INTERNATIONAL AIR LEASES (IAL)

1 PL803

INTERNATIONAL AIR PARTS (IAO)

1 PG580

INTREPID AVIATION (INL)

1 PL456

IRAN AIR (IRN)

1 PH731 PK391 PY021–PY022

IRAQI AIRWAYS (IRQ)

1 PY141–PY142

ISLAMIC REPUBLIC OF PAKISTAN (PKG)

1 PS612

ISLANDSFLUG (ISF)

1 PK282 PP352 PP384 PY003

ISRAEL AIRCRAFT INDUSTRIES (IAI)

1 PG573 PG575 PK692

JAL EXPRESS (JEX)

1 PW418

JAPAN AIRLINES (JAL)

1 PW411–PW417
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

JAPAN TRANSOCEAN AIR (SWL)

1 PK526–PK527 PN456 PW401–PW408 PW515–PW516

PW520–PW521 PW681–PW683

JAT YUGOSLAV AIRLINES (JAT)

1 PP771–PP779

JATAYU AIR (JAJ)

1 PG068

JET AIRWAYS (JPL)

1 PV207 PV209 PV271–PV272 PW215–PW216

PW421–PW424

JETSTAR AIRCRAFT SALES (JTS)

1 PG306

KENYA AIRWAYS (KEN)

1 PK641–PK642 PR031–PR034

KG AIRCRAFT LEASING (KGL)

1 PP935

KLM - ROYAL DUTCH AIRLINES (KLM)

1 PP861–PP866 PP868–PP869 PP871–PP877 PW014

PW017 PW611–PW622

KLM UK (AUK)

1 PP511 PP515

LAB (LAB)

1 PQ303 PQ951

LAC (CQC)

1 PY113

LACSA (LAC)

1 PK223 PK357 PK971 PK973

LAM (LAM)

1 PH703 PK749 PY031

LANCHILE AIRLINES (LAN)

1 PJ005–PJ006 PJ105–PJ106 PJ109 PK029

PK047 PK212 PK281 PK360

PK431 PK433 PK524–PK525 PK745

PK775 PK825 PK902 PK922–PK923

PK927 PL025 PL028 PY322

LAPA ARGENTINA (LAZ)

1 PJ110–PJ111 PK051 PK253 PK616

PY361
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

LAUDA AIR (LAL)

1 PP851–PP852 PW701–PW702

LINA CONGO (LNA)

1 PJ032 PY411

LINEAS AEREAS AZTECA (AZX)

1 PP983 PP986

LION AIR (MLI)

1 PK511

LITHUANIAN AIRLINES (LIJ)

1 PK632 PL611 PQ304

LORAIR (LOI)

1 PG216

LOT POLISH AIRLINES (LOT)

1 PQ978 PQ980 PT146–PT148 PT651–PT656

PV281–PV287

LUFTHANSA GERMAN AIRLINES (DLH)

1 PQ054–PQ085 PQ088–PQ092 PS701–PS706 PT331–PT360

LUXAIR (LUX)

1 PT184 PT671–PT672 PW741–PW742

LUXOR AIR (LXR)

1 PW591

MACEDONIAN AIRLINES (MDA)

1 PW526–PW527 PW771

MAERSK AIR (MRS)

1 PP519 PT121 PT128 PT130–PT138

MAERSK AIR LIMITED (MSK)

1 PT123–PT124

MAGIC CARPET AVIATION (MCI)

1 PP991

MAGNICHARTERS (MAM)

1 PJ004 PK143 PK145 PL454

MALAYSIA AIRLINES (MAS)

1 PJ551–PJ561 PW201–PW214 PW217–PW230

MALEV HUNGARIAN AIRLINES (HGA)

1 PM389 PM396 PM401–PM402 PM404–PM405

PM551 PM555–PM556 PQ298 PW027

PW040 PW268
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

MANDALA AIRLINES (MND)

1 PK354 PK463 PK614 PK636–PK637

PK874 PK924–PK925 PL027 PL061

PL421 PN002 PW004

MERPATI NUSANTARA AIRLINES (PNM)

1 PK615 PK623–PK624 PK819 PK917

PK929–PK930

MEXICO'S PRESIDENTIAL AIRCRAFT (MXG)

1 PC005 PP919

NACIONAL (NCT)

1 PK111 PK119 PK146 PL455

NATIONWIDE AIR CHARTER (NWR)

1 PK906 PK928 PK932 PL631–PL632

NIGERIA AIRWAYS (NIA)

1 PL785 PL788

NORTHROP GRUMMAN CORPORATION (GRU)

1 PG208

NORTHSTAR PRESIDIO MANAGEMENT (INH)

1 PK094–PK095 PY005

OLYMPIC AIRWAYS (OLY)

1 PK301–PK304 PK307–PK310 PM021–PM023 PR042

PW044 PW062–PW063 PW068 PW072

PW296 PW711–PW717

ORIX AVIATION SYSTEMS (OXA)

1 PT125 PT127

PACE AIRLINES (PIE)

1 PG075 PG203 PK221 PP835

PP837 PP867 PP870 PS957

PAKISTAN INT'L AIRLINES (PIA)

1 PP281–PP286

PANAIR (PIT)

1 PQ281 PW091

PEGASUS AIRLINES (PGS)

1 PW010 PW015 PW030 PW032

PW261–PW264

PEGASUS AVIATION GROUP (PSS)

1 PK740 PK757
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PERUVIAN AIR FORCE (PRF)

1 PG251 PG253 PN082 PT517

PHARAOH AIRLINES (PHR)

1 PG026

PHILIPPINE AIRLINES (PAL)

1 PM384–PM385 PM390 PM561 PQ803

PQ976 PS601 PW029 PW156

PHILLIPS ALASKA (ATR)

1 PN452–PN453

PHOENIX AVIATION (PHX)

1 PG578–PG579

PHUKET AIRLINES (PHK)

1 PG581–PG582

PLUNA (PLU)

1 PL201–PL203 PQ287

PREMIER AIRCRAFT MANAGEMENT (VEG)

1 PS626

QANTAS (QAN)

1 PQ001–PQ016 PQ293 PW293 PW531–PW550

PW557

QWEST AIR PARTS (QWE)

1 PG438

REGION AIR (RAE)

1 PP393

REGIONAL AIR (AKN)

1 PK462

REPUBLIC FINANCIAL CORPORATION (RFC)

1 PG199 PG225 PG433 PG502–PG503

PG622 PG704

REPUBLIC OF INDONESIA (IDO)

1 PL601–PL603

REPUBLIC OF KOREA AIR FORCE (KAF)

1 PP221

REPUBLIC OF NIGER (NIR)

1 PY166
 

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ALERT ALERT

RIO-SUL (ROS)

1 PP839 PP921 PP927 PS603

PT050–PT051 PT054–PT055 PT058–PT059 PT211–PT213

PT216–PT218 PT220 PT721–PT725 PT854

PU301

ROYAL AIR MAROC (RAM)

1 PK271–PK273 PT581–PT586 PW631–PW637 PY671–PY672

ROYAL AIRLINES (ROY)

1 PK545 PY303–PY304

ROYAL AIRWAYS (ROJ)

1 PW024

ROYAL THAI AIR FORCE (TAF)

1 PK519 PV296

RYAN INTERNATIONAL AIRLINES (RYN)

1 PK097 PK543

RYANAIR (RYR)

1 PJ114–PJ115 PK502–PK504 PK801–PK804 PK821

PK824 PK901 PK903 PK911–PK912

PK914–PK916 PK921 PK974 PN001

SABENA (SAB)

1 PP961–PP967 PS654 PT612–PT613 PT615–PT616

PW503 PW761

SAFAIR (SFA)

1 PW303 PW310–PW311 PW314

SAMCO AVIATION (SMO)

1 PL581

SAT AIRLINES (SKH)

1 PG214 PJ001

SATA AIR ACORES (SAP)

1 PP391 PQ992 PW012

SAUDI ARABIAN AIRLINES (SVA)

1 PK312–PK317 PL726–PL735 PY036

SAUDI ROYAL FLIGHT (SRF)

1 PK318

SHANDONG AIRLINES (SHG)

1 PM413–PM414 PP825–PP826 PQ391–PQ395

SHANTOU AIRLINES (SHT)

1 PM415–PM417
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

SHEIKH MUSTAFA EDREES (SME)

1 PL505

SHENZHEN AIRLINES (SHZ)

1 PQ486 PS629 PS691–PS692 PS851–PS852

SIERRA PACIFIC AIRLINES (SRP)

1 PK627 PL621

SKY AIRLINES (SYC)

1 PV235 PW001

SKY KING (SKN)

1 PG059 PK351–PK353 PK696

SKYLINE NEPC (DAI)

1 PH021

SKYWAYS (SKQ)

1 PG307

SOBELAIR (SBL)

1 PW561

SOUTH AFRICAN AIRWAYS (SAA)

1 PK731–PK733 PK742–PK743 PK746 PK771

PK774 PK776 PK904 PL101–PL113

SOUTHERN AIRCRAFT SERVICES (HUZ)

1 PL471

SOUTHWEST AIRLINES (SWA)

1 PK082 PK548 PK550–PK560 PK621

PK628–PK630 PM051–PM066 PP101–PP169 PP188

PP190–PP193 PP201–PP205 PP301–PP304 PP351

PP353 PP376–PP382 PP402–PP403 PP501–PP502

PP727 PP731 PP803–PP804 PP821–PP824

PP827 PS751–PS799 PS901–PS941 PU001–PU025

SPORTS JET (TSO)

1 PW563

STAR AIR (SRH)

1 PK777 PL744

SUDAN AIRWAYS (SUD)

1 PY156

TAAG (ANGOLA AIRLINES) (ANG)

1 PK661 PK664–PK666 PY162
 

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ALERT ALERT

TACA INTERNATIONAL AIRLINES (TAC)

1 PJ007–PJ008 PK823 PK882 PL501

PL506

TACA PERU (TNM)

1 PK871

TAF AEREAS LINHAS (TFL)

1 PY323

TANS (TAX)

1 PG351

TAROM - ROMANIAN AIR TRANSPORT (TRM)

1 PQ931–PQ935 PR010 PS956

THAI AIRWAYS INTERNATIONAL (TII)

1 PW161–PW171

THE PEGASUS AVIATION COMPANY (PEG)

1 PK285 PK827

TITAN AIRWAYS (TIU)

1 PS620

TRANSAERO AIRLINES (TRX)

1 PK451–PK452 PK773 PK779

TRANSAVIA AIRLINES (TAV)

1 PP806–PP808

TRANSBRASIL (TBL)

1 PP507 PP904 PP981–PP982 PQ230

PQ242 PS605

TRANSMILE AIR SERVICES (TML)

1 PN472 PN474 PY151 PY342

PY381

TRAVEL SERVIS (TSF)

1 PW006 PW042

TRITON AVIATION SERVICES (TIA)

1 PJ101 PJ103 PL502 PW092

TUNINTER (TUI)

1 PM397

TUNISAIR (TUN)

1 PK861–PK863 PT641–PT644 PY621
 

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ALERT ALERT

TURKISH AIRLINES (THY) (THY)

1 PM552–PM554 PM557 PM559–PM560 PM562–PM564

PT056–PT057 PW045 PW049–PW050 PW281

PW287 PW290–PW291

TURKMENISTAN AIRLINES (TUE)

1 PQ265 PQ801–PQ802

TYCO CAPITAL AEROSPACE (TCI)

1 PG074 PP504–PP505 PT614

UKRAINE INTERNATIONAL AIRLINES (UKR)

1 PK635 PN405 PR181 PT611

UNITED AIRLINES (UAL)

1 PG024 PG052 PG054–PG055 PG057

PG067 PG069–PG071 PK201–PK202 PL002–PL023

PQ101–PQ199 PQ201–PQ202 PT381–PT399 PT401–PT438

US AIRWAYS (USA)

1 PG474 PK288 PK591–PK599 PK601–PK606

PK608–PK610 PK883 PM101–PM119 PN021–PN043

PP001 PP003–PP010 PP012–PP020 PP024–PP028

PP030–PP032 PP034–PP054 PP401 PP404–PP440

PV001–PV010 PV012–PV055

VANGUARD AIRLINES (VAG)

1 PG210 PK695 PK908–PK910 PN491

VARIG AIRLINES (VAR)

1 PK112–PK114 PK116 PK118 PK120

PK144 PK211 PK561 PL453

PP905–PP906 PP917 PP922 PP946

PP987–PP990 PQ227 PQ251–PQ262 PQ266–PQ267

PQ290 PQ331 PQ983 PQ985–PQ987

PR006 PR008 PR043–PR044 PR132

PS619 PW016 PW021 PW023

PW037

VASP AIRLINES (VSP)

1 PG435 PG437 PG439–PG440 PG471–PG473

PH011–PH013 PK061–PK062 PK065–PK067 PK291

PK356 PK521 PK523 PK581

PL756 PP512–PP513 PP984 PS863

PX071 PY286

VIRGIN BLUE (VOZ)

1 PJ816 PP924 PW011 PW267

PW271 PW275 PW288
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

VIRGIN EXPRESS AIRLINES (EBA)

1 PP928 PP930 PQ984 PQ989

PQ993 PS625 PS655–PS656 PS972

PV231 PW013 PW033 PW571–PW572

VOLVO AERO SERVICES (SHANNON) (SLM)

1 PG204 PG278

WESTAIR (WSA)

1 PK041

WESTJET (WJI)

1 PJ031 PJ071 PJ108 PJ113

PK092–PK093 PK241 PK283 PK305

PK544 PK547 PK565 PK622

PK691 PK711–PK716 PL171 PL761–PL762

WHITE EAGLE AVIATION (WEG)

1 PW512–PW513

WUHAN AIRLINES (WUH)

1 PQ472 PQ491–PQ492 PR081–PR082 PR131

XIAMEN AIRLINES (XIA)

1 PM255 PN521 PQ295–PQ296 PQ471

PQ493 PT026–PT028 PT030–PT031

YEMENIA (YEM)

1 PK341 PY409–PY410

IDENTIFICATION BY VARIABLE NUMBER

Variable Group

PA001–PA022 1

PA099 1

PA231–PA232 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
 

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ALERT ALERT

PG471–PG475 1

PG501–PG505 1

PG571–PG586 1

PG621–PG630 1

PG651–PG652 1

PG701–PG705 1

PH001 1

PH011–PH013 1

PH021–PH024 1

PH701–PH715 1

PH731–PH732 1

PH741–PH743 1

PJ001–PJ009 1

PJ031–PJ032 1

PJ071–PJ072 1

PJ101–PJ119 1

PJ301–PJ302 1

PJ551–PJ561 1

PJ601–PJ615 1

PJ811 1

PJ816–PJ817 1

PK026–PK029 1

PK041–PK053 1

PK061–PK070 1

PK081–PK082 1

PK091–PK099 1

PK101–PK103 1

PK111–PK120 1

PK141–PK146 1

PK201–PK204 1

PK211–PK223 1

PK231–PK241 1

PK251–PK258 1

PK271–PK274 1

PK281–PK289 1

PK291 1

PK301–PK318 1

PK341 1

PK351–PK361 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PK391 1

PK431–PK433 1

PK451–PK452 1

PK461–PK469 1

PK495 1

PK501–PK504 1

PK511–PK515 1

PK519 1

PK521–PK528 1

PK541–PK565 1

PK581 1

PK591–PK599 1

PK601–PK617 1

PK621–PK637 1

PK641–PK642 1

PK661–PK666 1

PK671–PK681 1

PK691–PK697 1

PK711–PK716 1

PK731–PK765 1

PK771–PK779 1

PK801–PK804 1

PK819–PK827 1

PK830 1

PK861–PK863 1

PK871–PK874 1

PK881–PK884 1

PK901–PK938 1

PK971–PK974 1

PL001–PL028 1

PL061 1

PL081 1

PL101–PL113 1

PL151 1

PL171–PL172 1

PL201–PL203 1

PL221 1

PL401–PL417 1

PL421 1

Variable Group
 

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ALERT ALERT

PL441 1

PL451–PL456 1

PL471 1

PL491 1

PL501–PL506 1

PL551–PL562 1

PL581 1

PL601–PL603 1

PL611 1

PL621–PL626 1

PL631–PL632 1

PL711–PL712 1

PL716–PL747 1

PL756 1

PL758 1

PL761–PL770 1

PL781–PL788 1

PL793 1

PL801–PL803 1

PM001–PM006 1

PM016–PM017 1

PM021–PM023 1

PM051–PM066 1

PM101–PM119 1

PM141–PM142 1

PM171 1

PM181 1

PM251–PM255 1

PM281–PM283 1

PM381–PM399 1

PM401–PM417 1

PM541–PM564 1

PN001–PN002 1

PN021–PN043 1

PN081–PN086 1

PN101–PN117 1

PN131–PN163 1

PN401–PN420 1

PN431–PN433 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PN451–PN456 1

PN471–PN474 1

PN481 1

PN491–PN493 1

PN501–PN502 1

PN511–PN512 1

PN521 1

PP001–PP054 1

PP101–PP169 1

PP181–PP199 1

PP201–PP205 1

PP221 1

PP231–PP243 1

PP281–PP286 1

PP301–PP305 1

PP351–PP353 1

PP376–PP384 1

PP391–PP393 1

PP401–PP440 1

PP471–PP475 1

PP501–PP522 1

PP631–PP634 1

PP651–PP652 1

PP671–PP699 1

PP701–PP733 1

PP771–PP779 1

PP801–PP808 1

PP821–PP827 1

PP831–PP848 1

PP851–PP852 1

PP861–PP877 1

PP891–PP899 1

PP901–PP936 1

PP946–PP948 1

PP951–PP952 1

PP961–PP967 1

PP981–PP991 1

PP993 1

PQ001–PQ016 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PQ026–PQ041 1

PQ051–PQ092 1

PQ101–PQ199 1

PQ201–PQ202 1

PQ221–PQ237 1

PQ241–PQ243 1

PQ251–PQ267 1

PQ281–PQ299 1

PQ301–PQ307 1

PQ331–PQ332 1

PQ341–PQ348 1

PQ361–PQ373 1

PQ391–PQ395 1

PQ401–PQ418 1

PQ421 1

PQ431–PQ438 1

PQ447–PQ448 1

PQ451 1

PQ454 1

PQ471–PQ475 1

PQ479–PQ481 1

PQ486–PQ487 1

PQ491–PQ493 1

PQ771–PQ772 1

PQ791–PQ793 1

PQ801–PQ805 1

PQ931–PQ935 1

PQ951 1

PQ971–PQ997 1

PR001–PR017 1

PR021–PR034 1

PR041–PR045 1

PR061–PR072 1

PR077–PR082 1

PR091–PR092 1

PR096 1

PR101 1

PR121–PR122 1

PR131–PR132 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PR141–PR143 1

PR161–PR172 1

PR181 1

PS601–PS631 1

PS636–PS638 1

PS641–PS644 1

PS651–PS657 1

PS666–PS669 1

PS691–PS692 1

PS701–PS706 1

PS751–PS799 1

PS811 1

PS836–PS837 1

PS841–PS846 1

PS851–PS852 1

PS856 1

PS861–PS863 1

PS866–PS868 1

PS871–PS874 1

PS896–PS897 1

PS901–PS941 1

PS956–PS957 1

PS961–PS963 1

PS971–PS978 1

PT001–PT015 1

PT021–PT031 1

PT041–PT064 1

PT101–PT105 1

PT121–PT138 1

PT146–PT148 1

PT161–PT170 1

PT181–PT188 1

PT211–PT220 1

PT295 1

PT301–PT309 1

PT331–PT360 1

PT381–PT399 1

PT401–PT438 1

PT501–PT517 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PT561–PT565 1

PT581–PT586 1

PT611–PT621 1

PT641–PT644 1

PT651–PT656 1

PT671–PT672 1

PT681–PT685 1

PT701–PT703 1

PT716–PT717 1

PT721–PT725 1

PT801–PT834 1

PT851–PT854 1

PT871–PT886 1

PT901–PT930 1

PT971–PT973 1

PT981–PT985 1

PT996 1

PU001–PU025 1

PU301 1

PU311–PU313 1

PV001–PV055 1

PV201–PV209 1

PV226–PV229 1

PV231–PV237 1

PV271–PV272 1

PV281–PV287 1

PV296 1

PV301–PV302 1

PV351 1

PV356–PV357 1

PW001–PW054 1

PW061–PW068 1

PW072 1

PW086–PW088 1

PW091–PW094 1

PW101–PW102 1

PW106 1

PW111–PW120 1

PW156–PW157 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PW161–PW171 1

PW201–PW252 1

PW261–PW268 1

PW271–PW276 1

PW278 1

PW281–PW293 1

PW296 1

PW301–PW327 1

PW401–PW408 1

PW411–PW418 1

PW421–PW424 1

PW431–PW435 1

PW441–PW450 1

PW461–PW467 1

PW501–PW504 1

PW511–PW522 1

PW524–PW550 1

PW556–PW557 1

PW561–PW564 1

PW571–PW576 1

PW591–PW596 1

PW611–PW622 1

PW631–PW637 1

PW661–PW662 1

PW681–PW683 1

PW701–PW702 1

PW711–PW717 1

PW741–PW742 1

PW761 1

PW771 1

PW831 1

PW851–PW856 1

PX071 1

PX701 1

PY001–PY008 1

PY021–PY022 1

PY031 1

PY036–PY037 1

PY046–PY048 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

PY051–PY053 1

PY056–PY057 1

PY101–PY103 1

PY111–PY113 1

PY131–PY135 1

PY141–PY143 1

PY151–PY154 1

PY156–PY157 1

PY161–PY162 1

PY166 1

PY191 1

PY201 1

PY221–PY222 1

PY231 1

PY241–PY244 1

PY270–PY275 1

PY281 1

PY286 1

PY301–PY304 1

PY321–PY323 1

PY341–PY346 1

PY361–PY362 1

PY381 1

PY401 1

PY409–PY411 1

PY421–PY422 1

PY441 1

PY451 1

PY461–PY463 1

PY591–PY595 1

PY611–PY612 1

PY621 1

PY631 1

PY651 1

PY671–PY672 1

PY721 1

PY741 1

Variable Group
 

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BOEING SERVICE BULLETIN 737-53A1241

ALERT ALERT

2. Spares Affected

None.

B. Concurrent Requirements

None.

C. Reason

Boeing has received a report of one crack on a 737-200 airplane on the Sta 291.5 frame near the 

forward galley door cutout. The airplane had accumulated 66,043 flight cycles and 45,989 flight hours. 

The Sta 291.5 frame is a body frame forward of the forward galley door cutout. The crack was found 

from the aft side of the frame web at the cutout for the doorstop intercostal strap at stringer 16R.

Undetected or remaining cracks in the frame will propagate by normal fatigue due to cyclic cabin 

pressure loading. Continued operation with undetected cracks could lead to a severed frame. Loss 

of the frame would render the doorstops ineffective and result in a possible rapid decompression and 

potential separation of the forward galley door from the airplane.

This service bulletin gives instructions to do an inspection of the Sta 291.5 frame for cracks at Stringer 

16R. Accomplishment of this service bulletin will prevent a possible rapid decompression and 

potential separation of the forward galley door from the airplane.

Boeing Service Related Problem (SRP) 737-SRP-53-0149 is related to this service bulletin.

D. Description

Get access to the aft side of the Sta 291.5 frame at stringer 16R. Do an eddy current inspection of 

the frame web around the cutout for the doorstop intercostal strap at stringer 16R.

E. Compliance

Airplanes under 50,000 flight cycles, accomplish the inspection prior to the airplane accumulating 

50,000 flight cycles. Repeat the inspections at 4,500 flight cycle intervals.

Airplanes over 47,750 flight cycles accomplish the inspection within 2,250 flight cycles from release 

of the service bulletin. Repeat the inspections at 4,500 flight cycle intervals.

F. Approval

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

specified in this service bulletin comply with the applicable Federal Aviation Regulations (FAR) and 

are FAA approved. This service bulletin and the FAA approval were based on the airplane in its 

original Boeing delivery configuration or as modified by other FAA 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.
 

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ALERT ALERT

G. Manpower

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

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

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

lost time:

— Time to adjust to the workplace

— Time to schedule the work

— Time to examine the work

— Time to cure the materials

— Time to make the parts

— Time to find the tools.

H. Weight and Balance Changes

Not applicable. This service bulletin covers inspection only.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Service Related Problem (SRP) 737-SRP-53-0149

b. 737 Maintenance Manual (AMM) Subject 25-21-01, 25-21-35, 25-21-71, 25-31-53, and 25-

31-83.

c. 737 Nondestructive Test (NDT) Manual D6-37239, Part 6, Subject 51-00-00, Figure 4.

d. Boeing Parts Standards Document D-590

e. Boeing Drawing 65-88700 

2. Data supplied with this Service Bulletin:

None.

Task

Number of 

Persons Task-Hours Elapsed Hours

Open Access 3 8.5 3.0

Examine 2 2.0 1.0

Close Access 3 11.0 3.75

TOTAL FOR EACH AIRPLANE 21.5 7.75
 

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ALERT ALERT

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

This drawing was used to prepare this service bulletin. This drawing is not necessary to make 

the specified changes, and is not supplied with this service bulletin. This drawing may not be 

applicable to all airplane configurations or operators.

K. Publications Affected

None.

L. Interchangeability and Intermixability of Parts

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

Drawing Number Title

65-45807 FRAME INSTL - FWD GALLEY DOOR STA 291.5
 

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ALERT ALERT

BLANK PAGE
 

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2. MATERIAL INFORMATION

A. Material - Price and Availability

None.

B. Industry Support Information

At the time of release of this service bulletin, warranty remedies have not been determined. A 

subsequent revision or Information Notice will address the warranty remedies available, if any.

C. Parts Necessary For Each Airplane

1. Kits:

None.

2. Parts and Materials Supplied by the Operator:

None.

3. Parts Modified and Reidentified:

None.

4. Parts Removed and Not Replaced:

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

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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3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

Note:

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

definition of the acronyms.

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

3. Visual Detailed Inspection: An intensive examination of a specific item, installation or 

assembly to detect damage, failure or irregularity. Available lighting is normally 

supplemented with a direct source of good lighting at an intensity deemed appropriate. 

Inspection aids such as mirrors, magnifying lenses, etc. may be necessary. Surface 

cleaning and elaborate access procedures may be required.

4. 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 given in 737 Structural Repair Manual, 

Chapter 51

— Torque limits to tighten nuts and bolts are given in 737 Structural Repair Manual, 

Chapter 51.

B. WORK INSTRUCTIONS

1. Gain access to the body frame at Sta 291.5 stringer 16R. Remove, as needed, the No. 1 forward 

galley (refer to AMM 25-31-53); the forward galley header (refer to AMM 25-31-83); the lowered 

ceiling panels (refer to AMM 25-21-71); the forward galley doorway sidewall lining panels (refer 

to AMM 25-21-35); and the sidewall lining insulation (refer to AMM 25-21-01). 

2. Do a visual detailed inspection and an eddy current inspection of the intercostal strap cutout from 

the aft side of the frame web at stringer 16R, as specified in Figure 1. If cracks are found notify 

Boeing for repair instructions. If no cracks are found repeat the inspections at the intervals 

specified in Section 1.E. Compliance. 

3. Put the airplane back to a serviceable condition.
FIGURE 1: FRAME WEB INSPECTION

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FIGURE 1: FRAME WEB INSPECTION

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

STEP TASK NAME/PROCEDURE REFERENCES NOTES

1

Examine Frame Web/Visual Detailed - (a)

Frame Web/Eddy Current 737 NDT, Part 6, Subject 

51-00-00, Figure 4.

(a) Do a visual detailed and eddy current inspection of the web around the slotted hole cutout 

from the aft side of the Sta 291.5 frame.

A

A

A-A

INBD

1

V74456

FORWARD GALLEY

DOORWAY

INBD

FWD

291.5

STA

S-16R

(SHEET 1 OF 1)
 Table of Contents

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Table of Contents

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 36

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 37

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 37

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

1. Kits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 39

3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 39

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

FIGURE 1: FRAME WEB INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
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Commercial

Airplane

Group 737

ALERT ALERT

Service Bulletin

Number: 737-53A1241 Evaluation Form

Date: June 13, 2002

ATA System: 5311

SJC

SUBJECT: FUSELAGE - Frames and Bulkheads - Sta 291.5 Frame Inspection at Stringer 16R - 

Forward Galley Door Cutout

Use this evaluation form to tell us what you think of the quality of this service bulletin. We will use the data that 

you give us to improve the quality of our service bulletins.

Note: Please do not use this evaluation form to tell us to make changes to your manuals. To make these 

changes, please use a Publication Change Request (PCR) form. 

Please give us this data: 

(If necessary, please use the other side. Thank you for the time you used to give us your comments.)

OPERATOR: ______________________________________ TODAY’S DATE:_______________________

PREPARED BY: ___________________________________ TITLE: ______________________________

ORGANIZATION: __________________________________ TELEX CODE: ________________________

TELEPHONE NUMBER: _____________________________ BASE: ______________________________

Please rate the quality of this service bulletin: (good) 4 3 2 1 (poor)

Please rate the quality of the illustrations: (good) 4 3 2 1 (poor)

Will you do the change given by this service bulletin? Yes___ No___ If not, please explain:

Is this service bulletin easy to understand? Yes___ No___ If not, please explain:

Is this service bulletin easy to use? Yes___ No___ If not, please explain:

Are the Planning Information, Material Information, and

Accomplishment Instructions accurate? Yes___ No___ If not, please explain:

Is the Manpower estimate accurate? Yes___ No___ If not, please explain:

Give the completed evaluation form to your Boeing Field Service Representative or send the evaluation form 

directly to this address:

Manager, Service Bulletin Engineering

Boeing Commercial Airplanes Group

P.O. Box 3707, Mail Code 2H-36

Seattle, WA 98124-2207
 

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