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BOEING
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET BOEING COMMERCIAL AIRPLANES POST OFFICE BOX 3707 SEATTLE, WASHINGTON 98124-2207 Boeing Service Bulletin 737-53-1116 This sheet transmits REVISION 1, date September 7, 1989 of Service Bulletin 737-53-1116, "FUSELAGE - FORWARD GALLEY DOORWAY UPPER CORNERS - INSPECTION, REPAIR, AND PREVENTIVE MODIFICATION".
NOTE: This revision constitutes a complete reissue.
SUMMARY This revision is issued to recormend the modification per this service bulletin for incorporation on aging 737 airplanes and to change the forward galley door upper forward corner doubler installation, eliminating interference when incorporating Service Bulletin 737-53-1074.
incorporation threshold for this service bulletin is shown in the Description and Accomplishment Instructions.
As a result of the FAA-sponsored Aging Fleet Conference, a 737 Structures Working Group with Airline and Boeing members and FAA observers was formed to review structural service bulletin modifications and recommend selected bulletins for incorporation on aging airplanes. Based on a structural review of the 737 airplane, the Structures Working Group has determined that modification per this service bulletin, at or before the indicated threshold, should be accomplished to support the continued structural integrity of aging 737 airplanes.
Airplane effectivity is updated to reflect current airplane ownership.
Airplanes modified per the previous release of this service bulletin do not require additional work.
A revision bar in the left margin along with this revision number and date indicates a change. Absence of a revision bar on a page bearing this revision number and date means only that existing copy has been moved or that a minor typographical error has been corrected.
REVISION HISTORY Original Issue: July 21, 1988 Revision 1: September 7, 1989
BOEING
SERVICE BULLETIN
SUMMARY BOEING COMMERCIAL AIRPLANES POST OFFICE BOX 3707 SEATTLE, WASHINGTON 99124-2207 SUBJECT: FUSELAGE - FORWARD GALLEY ATA: 5331 NUMBER: 737-53-1116 DOORWAY UPPER CORNERS - DATE: July 21, 1988 INSPECTION, REPAIR, AND REVISION 1: September 7, 1989
PREVENTIVE MODIFICATION
BACKGROUND Based on a structural review of the 737 airplane, incorporation of the modification per this service bulletin is recommended on aging airplanes.
Six operators have found seventeen cracks in the skin and doublers at the upper corners of the forward galley doorway on eight airplanes. There were eight cracks reported at the upper aft corner on three airplanes, and nine cracks in the skin at the forward corner on five airplanes.
airplanes had accumulated from 29,000 to 47,300 flight hours, 40,500 to 60,800 flight cycles.
35,000 flight cycles, accomplish the Initial inspection within 3,500 flight cycles after receiving this bulletin.
If no cracks are found accomplish the preventive modification, or repeat the inspection at "C" check intervals until the preventive modification is accomplished. If cracks are iound, install the repair doublers and triplers over the cracked areas per this bulletin.
EFFECTZVITY 737 airplanes Line Number 1-1560, less PJ201 - PJ219
MANPOWER Cause of the cracking is attributed to Elapsed fatigue from pressurization cycles, Total Time and if not corrected could result in Applicability Man-Hours (Hours) cabin pressurization difficulties, and unscheduled downtime for repairs. Inspection 5 2.5 Preventive ACTION Modification 0.7 0.7 Repair -per corner 14 24 | As recommended by the 737 Aging Fleet Structures Working Group, accomplish MATERIAL INFORMATION modification the Accomplishment Instructions at Or Kit Price before the accumulation of 75,000 flight cycles. 65C33800-12 $422.00 65C33800-13 $401.00 Prior to reaching 35,000 flight 65C33800-14 $292.00 cycles, accomplish high 65C33800-15 $301.00 frequency eddy current inspections for 165C33800-16 $214.00 cracks in the skin, skin doubler, or bearstrap doubler in the upper corners See Paragraph I.F for applicable terms of the forward galley doorway. for and conditions.
airplanes having accumulated over Sunmary Page 1 of 2
BOEING SERVICE BULLETIN 737-53-1116
SCRACKS (TYPICAL)
AFT CORNER SHOWN
FORWARD CORNER SIMILAR Jul 21/88 REV. 1: Sep 7/89 Summary Page 2 of 2
BOEING COMMERCIAL AIRPLANES BOEING POST OFFICE BOX 3707 SEATTLE, WASHINGTON 90124-2207
SERVICE BULLETIN 78Z ATA SYSTEM: 5331 NUMBER: 737-53-1116 DATE: July 21, 1988 REVISION 1: September 7, 1989 SUBJECT: FUSELAGE - FORWARD GALLEY DOORWAY UPPER CORNERS - INSPECTION,
REPAIR, AND PREVENTIVE MODIFICATION I. PLANNING INFORMATION A. Effectivity
1. Airplanes Affected See Service Bulletin Index Part 3 for cross reference of Variable Number to Airplane Serial Number.
This change is applicable only to airplanes listed below.
CODE VARIABLE NUMBER AAL PG201 PG204 PG217 PG222 PG271-PG272 PG276 PG278 PG351 PG403 PG438 PP161-PP168 ABD PK495 ABL PP380 AFA PL502-PL503 PN101-2N117 AID PY002 ALG PK361 PK631 PK633-PK634 PL717-PL725 PY051-PY053 ALK PY591-PY595 ALO PG046 PG629 PG705 PK286 PK305-PK306 PK691-PK695 PK697 PP730 PP733 PY001 PY003 PY005 PY451 737-53-1116 Jul 21/88 REV. 1: Sep 7/89 Page 1 of 22
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINIJED) ALY PY409-PY410 AMW PC004 PG036 PJ 102 PК625-PК626 PК696 ZLITa PL551-PL562 PL801 SEdd 26dd-8dd PP381 06 668-68 ANA PG578-PG581 PG583-PG586 PK711-PK716 ANG PK661 РК664-PК666 PY162 ANK PG582 ANS PQ026-PQ037 ANK PP904 PP907 ANZ PK047 PK211 PM181 PY741 АРС PL151 ARE PP352 PP384 PP946-PP947 ARG PH705-PH708 PH741-PH743 PК102-PК103 PY007-PY008 ARL PG251 PG253-PG255 PG573 PK029 PK614 PK641-PK642 PP951-PP952 PY281 PY321-PY323 ARM PY241 PY243-PY244 ASA PY112 PY134-PY135 PY270 ASC PG224 PG401-PG402 PG572 PGS74 РУЗ43 AUK PK612 PL171 AUS PQ001-PQ012 AVG PN501-PN502 AZE PA001 PA003-PA004 FC003 PL802 Jul 21/88 737-33-11 REV. 1: Sep 7/89
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINUED) BAH PK351 - PK353 PL061 BAB РК731• PK765 PK771-PK777 PK779 PK819 PK830 BAV P1451-PL452 PL455-P1456 BCI PG214 BEJ PM281-PM283 PP521-PP522 BER PP822 BMA PP908 - PP909 BNF PG034 PG202 PG205 PG207 PG209 PG211-PG212 PG216 PG218 PG220-PG221 PG273-PG275 PK287 BRI PJ 101 PJ103-PJ108 PJ110-PJ119 PK212 PK215 РК801-РК804 РУ361-РУ362 BRT PJ001-PJ009 PJ031 PJ072 PK882 PL303 PN451 - PN456 BRZ PK068 - PK069 BZB PY401 CAL PG199 PP671-PP699 PP701-PP726 CAM PM171 PY046 - PY047 CDI PG651-PG652 PJ032 РК026-PК028 PK221-PК223 PK358 PK561 PК671-PК675 PК677-PК681 PK822-PK823 PK881 PK884 P1401-PL417 PL712 PL761-PL762 PL764-PL770 PM141-PM142 РУ151-РУ154 РУ301-РУ304 РУ421-РY422 РY441 CHI PN471 - PN472 CIN PG279 COP PC001 РУ341 COR PP831 PP838 CRU PK141-PK146 Jul 21/88 737-53-1115 REV. 1: Sep 7/89
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINUED) DAL PG203 PG219 PK611 PK613 PK615 PK623-PK624 PK632 PL221 PL611 PN131-PN163 PN401-PN404 PN407-PN420 PP231-PP243 DAN PK820 PL421 PNO01-PNO02 PP351 PP353 DFI PP991 DLH PК901-PК938 PQ051-PQ065 PQ086-PQ090 PY345-PY346 DRG PK35? PK617 PK871 PK873 EAG PG436 PY381 EGN PG037 PG208 PG215 PG431 PL763 EGP PK252 - PK258 ELA PL631-PL632 ERA PG026 PG028 - PG029 PY004 900xa EUR PK203 PK359 PK564 FAT PA002 PA005 PG228 PG230 FCT PC002 PG213 PG252 FRO PGU32-PC433 P6041-PG442 PG621-PC628 P6630 PG704 PLO01 GAX PA231-PA232 GBN PY191 GER PQ231 - PQ233 GNE PY651 GUL PK461-PK468 GUN PK635-PK637 PM251-PM254 PN405 PY056-PY057 HAP PL501 PL504 - PL506 Jul 21/88 737-53-1116 REV. 1: Sep 7/89
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINUED) HGA PK284-PK285 PK827 HLA PP833-PP834 PP839-FP840 PP903 ICS PY342 РYЗ44 IDF PM016-PH017 IDO PL601-PL603 IER PP841-PP842 IND PH021-PH022 PH024 PH709 PH711-PH713 PK231-PK240 PL026-PLO28 PL711 PM001 - PM006 PY631 INT PK616 PP931-PP936 PP948 IRN PH731 PK391 PY021-PY022 IRQ PY141 - PY142 JAT PP771-PP779 JTA PL441 KAF PP221 KIN PP861-PP870 LAL PP851-PP852 LAM PH001 PH703 PY031 LAN PК360 PK825 PLO25 PY242 INA PY411 INK PH701 LUX PK451-PK452 MAD PG375 PL793 MAL PL716 MAS PK281 PL736-PL738 PL740-PL747 PY201 Jul 21/88 737-53-1116 REV. 1: Sep 7/69
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINUED) MID PK621-PK622 PK627-PK629 PN491-PN493 MLT PL621-PL626 MON PP821 PP823-PP824 PP832 MRS PK872 PK874 PP501-PP504 MXG PC005 PG223 NAS PA099 NAU PK356 PK581 PY286 NIA PL781-PL782 PL784-PL788 NIR PY166 NIA PY132-PY133 OLY PK301-PK304 PK307-PK310 PM021-PM023 ORN PK826 PP201-PP205 PP732 PAA PG020 - PG021 PG043 PG047 - PG048 PEX PA006-FA022 PG501 - PG505 PIA PP281 - PP286 PLU PL201-PL203 PRS PX701 PRE PJ109 PK563 PTI PP728 - PP729 PTS PL471 RAM PК271-PК274 PY671-РY672 RBA PK051 PY231 SAA PG353-PG356 PL101-PL113 SAB PK041 PK044-PK046 PK048-PK050 PK052-PK053 PК431-PК433 PP961-PP965 PY272-PY275 Jul 21/88 737-53-1116 REV. 1: Sep 7/89
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINUED) SAH PG434 PK081 SHJ PL581 SRF PK318 SUD PY156-PY157 SVA PK311-PК317 PL726-PL735 PY036-PY037 SWA PK091-PK099 PK541-PK560 PK630 PM051-PM066 PP101-PP135 SWL PK521 PK523 -PK527 TAC PG059 PG352 PP727 PY131 TAF PK519 TAN PJ071 TAP PK971 PK973-PK974 PNO81-PN086 PY721 TAV PG074 PK501 - PK504 PK821 PP801-PP804 PY101-PY103 TBL PP825-PP826 PP836-PP837 PP847-PP848 PQ241-PQ242 TEA PК042-PК043 PK282 TII PK511 PK514- PK515 INZ PY611-PY612 TUN PК861-PК863 PY621 VAL PG001-PG004 PG006-PG019 PG022-PG025 PG027 PG032-PG033 PG038-PG040 PG044-PG045 PG051-PG054 PG057 PG060-PG063 PG065-PG072 PK201-PK202 PL002-FL024 PQ101-PQ123 UNV PP379 PP382 PP731 USA PG041-PC042 PG049 PG301-PG314 PG474 PK288 -PK289 PK591-PK599 PK601-PK610 PK883 PM101 - PM119 PNO21-PN043 PP001-PP045 PP376-PP377 PP383 PP401-PP436 PP471-PP475 PV001-PV004 Jul 21/88 737-53-1116 7 REV. 1: Sep 7/89
BOEING SERVICE BULLETIN 737-53-1116
CODE VARIABLE NUMBER (CONTINUED) UTA PP902 PP910 VAR PK111-PK120 PL453-P1454 PP905-PP906 PP981-PP982 VAT PK824 PL758 VIV PP169 PP391-PP392 VNZ PKO 70 VSP PG435 PG437 PG439-PG440 PG471-PG473 PH011-PHC13 PК061-PК062 PK065-PК067 PК241 PK354-PK355 PL756 PP301-PP305 PP827 PX071 PY222 XIA PM255 PN406 XIN PP631 - PP634 YEM PK341 YUN PP651-PP652 ZAI PY111 PY113 ZAM PK291 ZMB PN431 - PN433 Jul 21/88 737-53-1116 REV. 1: Sep 7/89 8
BOEING SERVICE BULLETIN 737-53-1116
LISTING BY VARIABLE NUMBER PA001-PA022 PA099 PA231-PA232 PC001-PC005 PG001-PG075 PG199 PG201-PG230 PG251-PG255 PG271-PG279 PG301-PG314 PG331-PG332 PG351-PG356 PG375 PG401-PG403 PG431-PG442 PG471-PG475 PG501-PG505 PG571-PG586 PG621-PG630 PÇ651-PG652 PG701- PG705 PH001 PH011-PH013 PH021-PH024 PH701-PH715 PH731-PH732 PH741-PH743 PJ001-PJ009 PJ031-FJ032 • PJ071- PJ072 PJ101-PJ119 PК026-PК029 PК041-PК053 PК061-PК070 PК081-PК082 PК091-PК099 PК101-PК103 PК111-PК120 PК141-PК146 PК201-PК204 PК211-PК223 PК231-PК241 PК251-PК258 PК271-PК274 PК281-PК289 PK291 PK301 - PK318 PК341 РК351 -К361 РК391 PК431-PК433 PK451-PK452 PK461-PK469 PK495 PK501- PK504 PK511-PK515 PK519 PK521-PK527 PK541-PK565 PK581 PK591-PК599 PК601-PК617 PК621-PК637 PК641-PК642 PК661-PК666 PК671-PК681 PК691-PK697 PК711-PК716 PК731-PК765 PК771-PК779 PK801-PК804 PK819-PK827 PK830 PK861-PК863 PK871-PK874 PK881-PK884 PK901-PK938 PK971-PK974 PL001-PL028 PL061 PL081 PL101 - PL113 PL151 PL171-PL172 PL201-PL203 PL221 PL401- P1417 PL421 PL441 PL451-PL456 PL491 PL501-PL506 PL551-PL562 PL581 PL601-PL603 PL611 PL621-PL626 PL631-PL632 PL711-PL712 PL716-PL747 PL756 PL761-PL770 PL781-PL788 PL801-PL803 PM001-PM006 PM016-PM017 PM021 - PM023 PM051-PM066 PM101-PM119 PM141-PM142 PM171 PM181 PM251-PM255 PM281-PM283 PN001-PN002 PN021-PN043 PN081-PN086 PN101-PN117 PN131-PN163 PN401-PN420 PN431-PN433 PN451-PN456 PN471-PN472 PN481 PN491-PN493 PN501-PN502 PN511 PP001-PP045 PP101-PP135 PP161-PP169 PP181-PP192 PP201-PP205 PP221 PP231-PP243 PP281-PP286 PP301-PP305 PP351-PP353 PP376-PP384 PP391-PP392 PP401-PP436 PP471-PP475 PP501 - PP504 PP521-PP522 PP631-PP634 PP651-PP652 PP671 - PP699 PP701-PP733 PP771-PP779 PP801-PP804 PP821-PP827 PP831-PP842 PP846-PF848 PP851-PP852 PP861-PP870 PP891-PP899 PP901-PP910 PP931-PP936 PP946-PP948 PP951-PP952 PP961-PP965 PP981-PP982 PP991 PQ001-PQ012 PQ026-PQ037 PQ051-PQ065 PQ086-PQ090 PQ101-PQ123 PQ231-PQ233 PQ241-PQ242 PVO01-PV004 PX071 PX701 РY001-РY008 PY021-PY022 РY031 PY036-PY037 PY046-PY048 PY051-РУ053 РY056-PY057 РУ101-РУ103 РУ111-PY113 PY131-РУ135 PУ141-РУ143 PY151-РУ154 РУ156-PУ157 PY161-РУ162 РУ166 PY191 PY201 PY221-PY222 PY231 PY241-PY244 PY270-PY275 PY281 PY286 РУЗ01-РУ304 РУ321-РУ323 РУ341-РУ346 РУ361-РУ362 РУ381 PY401 PY409 -PY411 РY421-РУ422 PY441 PY451 РУ461-РУ463 PY591-PY595 PY611-PY612 PY621 PY631 PY651 PY671-PY672 PY721 PY741
2. Spares Affected None 737-53-1116 Jul 21/88 9 REV. 1: Sep 7/89