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Commercial Airplane Group 737 Service Bulletin Number: 737-53A1166 Revision Transmittal SheetDate: June 30, 1994 Revision 1: May 25, 1995 ATA System: 5311 SUBJECT: FUSELAGE - FRAMES - BODY STATION 727 OUTBOARD CHORD AT STRINGER 18A,
INSPECTION AND PREVENTIVE MODIFICATION This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Notice of Proposed Rule Making, FAA Docket Number 94-NM-159-AD, is related to this service bulletin.
No more work is necessary on airplanes changed as shown in the initial release of this service bulletin.
SUMMARY This revision is sent to add a stringer 18A outer chord repair. In addition, instructions have been added, to trim "Time Limited Repair" parts, to eliminate interference with fasteners.
Paragraph I.A., Effectivity, shows changes of airplane operators. Each operator should examine the Effectivity paragraph for changes.
Vertical lines are put on the left edge of each page, except in Paragraph I.A., Effectivity, to show the location of important changes.
Pages with a revision number and date, but no vertical lines, have no important changes.
REVISION HISTORY Initial Release: June 30, 1994 Revision 1: May 25, 1995 BOEING COMMERCIAL AIRPLANE GROUP P.O. BOX 3707 SEATTLE, WASHINGTON 98124-2207
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Commercial Airplane Group 737 Service Bulletin Number: 737-53A1166 SummaryDate: June 30, 1994 Revision 1: May 25, 1995 ATA System: 5311 SUBJECT: FUSELAGE - FRAMES - BODY STATION 727 OUTBOARD CHORD AT STRINGER 18A,
INSPECTION AND PREVENTIVE MODIFICATION
BACKGROUND Four operators sent reports of cracks in the outboard chord of the frame at Body Station (BS) 727 where Stringer 18A is attached. The reports were of eight airplanes with 39,000 to 54,100 flight hours and 56,200 to 73,200 flight cycles. The cracks were caused by fatigue that was started by fretting of adjacent parts. Operators have also sent reports of cracks in the outboard chord of Stringer 18-A.
The changes shown in this service bulletin will decrease the probability of these cracks. This area is a primary structural element. Operation with cracks in the frame will decrease the structural integrity of this area.
As part of a service bulletin validation program, the inspection, frame chord replacement, and preventive modification was completed on airplane PG576 (Group 2) before the initial release of this bulletin.
ACTION Make an inspection of the outboard chord of the frame at BS 727 where Stringer 18A is attached.
Look for cracks. Do the inspection at the times given in the Compliance section.
Also, make an inspection of the outboard chord of Stringer 18A at Station 727. If cracks are found in the outboard chord of Stringer 18A, do the repair.
If cracks are found in the outboard chord of the frame at BS 727, install the time limited repair or replace the chord and, optionally, install the preventive modification. If no cracks are found, install the preventive modification or do the inspection again. Do the inspection at the times given in the Compliance section until the preventive modification is installed. If the preventive modification is installed, no more inspections per this bulletin are necessary.
More work is necessary for operators that have replaced the outboard chord of the frame at BS 727 as shown in Service Bulletin 737-53-1088. Refer to Compliance.
COMPLIANCE This bulletin has a Flight Safety Inspection Program that is the minimum necessary to keep the structural integrity of the outboard chord.
For airplanes with 27,000 flights to 50,000 flights, do the inspection initially within 4,500 flights after you get this bulletin. Do the inspection again at intervals of 15,000 flights until the airplane collects more than 50,000 flights.
For airplanes with 50,000 flights to 60,000 flights, do the inspection initially within 2,500 flights after you get this bulletin. Do the inspection again at intervals of 7,500 flights until the airplane collects more than 60,000 flights.
For airplanes with 60,000 flights to 70,000 flights, do the inspection initially within 1,500 flights after you get this bulletin. Do the inspection again at intervals of 5,000 flights until the airplane collects more than 70,000 flights.
For airplanes with more than 70,000 flights, do the inspection initially within 500 flights after you get this bulletin. Do the inspection again at intervals of 3,000 flights.
For airplanes with the lower part of the chord replaced by SB 737-53-1088, do the inspection at the intervals shown above.
For airplanes with the upper part of the chord replaced by SB 737-53-1088, do the inspection initially within 30,000 flight cycles after the chord was replaced. Do the inspection again at the intervals shown above for flight cycles after the chord was replaced.
BOEING COMMERCIAL AIRPLANE GROUP P.O. BOX 3707 SEATTLE, WASHINGTON 98124-2207 Summary Page 1 of 2
BOEING SERVICE BULLETIN 737-53A1166
EFFECTIVITY All 737-100 and 737 -200 airplanes, Line Numbers 1-999, in 4 groups.
MANPOWER Refer to Paragraph I.F. Manpower.
MATERIAL INFORMATION Boeing Supplied Kits Refer to Paragraph I.G., Material - Price and Availability.
EDGE OF FLANGE
EXAMINE FORWARD
AROUND TWO FASTENER HEADS EXAMINE SURFACE OF S−18A
EXAMINE AREA AROUND
TWO FASTENER HOLES
A FLAT STRAP)
THE OUTER CHORD OF STRINGER 18−A IS STRINGER 18−A (ON SOME AIRPLANES
TYPICAL CRACK
LEFT SIDE SHOWN
RIGHT SIDE OPPOSITE (WING−TO−BODY FAIRING NOT SHOWN) STA 727 C79178 Jun 30/94 REV 1: May 25/95 Summary Page 2 of 2
Commercial Airplane Group 737 Service Bulletin Number: 737-53A1166 Date: June 30, 1994 Revision 1: May 25, 1995 ATA System: 5311 SUBJECT: FUSELAGE - FRAMES - BODY STATION 727 OUTBOARD CHORD AT STRINGER 18A,
INSPECTION AND PREVENTIVE MODIFICATION
THIS SERVICE BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH I.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.
I. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D6-19567, Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below.
IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER
AER LINGUS (ARL) 2 PY322 3 PK641-PK642
AERO CONTROLS, INC (AEO) 2 PG629
AERO COSTA RICA (AOR) 3 PK872-PK873
AEROLINEAS ARGENTINAS (ARG) 2 PH705-PH708 PH741-PH742 PY007 3 PH743 PK102-PK103 PK464
AIR ALGERIE (ALG) 3 PK361 PK631 PK633-PK634 PL717-PL725 PY051 PY053
AIR ATLANTA ICELANDIC (AID) 2 PY346 AIR FOYLE LTD. (FOY) 3 PJ108 PJ113
AIR FRANCE (AFA) 3 PL502-PL503 PN101-PN112 Jun 30/94 737-53A1166 REV 1: May 25/95 Page 1 of 51
BOEING SERVICE BULLETIN 737-53A1166 AIR GABON S.A. (GBN) 3 PY191
AIR GUINEE (GNE) 3 PY651
AIR MADAGASCAR (MAD) 2 PG375 3 PL793 AIR NEW ZEALAND, LTD. (ANZ) 3 PJ117-PJ119 PK214 PL621-PL623 PY741 AIR SOUTH, INC. (SOT) 2 PG210 PG215 3 PK221 PK351 PK353 PK462 PK466
AIR TANZANIA (TNZ) 3 PY611-PY612
AIR TOULOUSE INTERNATIONAL (TOL) 2 PL716
AIR UKRAINE (UKA) 3 PK354
AIR ZAIRE (ZAI) 3 PY111 PY113
AIRCORP (CRP) 2 PG037 AIRTRAN AIRWAYS, INC. (CQT) 2 PG438 3 PK028
ALASKA AIRLINES (ASA) 3 PY112 PY134-PY135 PY270 PY461-PY462
ALBATROS AIRLINES (ABS) 2 PG251 PG253
ALIADRIATICA (ADH) 3 PK432 ALL NIPPON AIRWAYS CO. LTD. (ANA) 2 PG584-PG586 3 PK711-PK716
ALOHA (ALO) 2 PG046 3 PK286-PK287 PK691-PK695 PY231 PY242 PY451
AMC AVIATION (AMF) 3 PK254 Jun 30/94 737-53A1166 REV 1: May 25/95 2
BOEING SERVICE BULLETIN 737-53A1166 AMERICA WEST AIRLINES, INC. (AMW) 2 PC004 PG036 PL801 3 PK283 PK696 PL081 PL172 PL551-PL562 AMERICANA DE AVIATION S. A. (AMY) 2 PG276
AMIRI FLIGHT (ABD) 3 PK495
AMORA FLIGHT CHARTER SERVICES (FCA) 2 PG047
ANGOLA AIR CHARTER (AOH) 2 PG431
ANGOLA AIRLINES (ANG) 3 PK661 PK664 PY162
ANSETT WORLDWIDE AVIATION SERVICES (AWW) 1 PA001 PA003-PA004 ARAMCO ASSOCIATED CO. (ARM) 3 PL151 PY241 PY243-PY244
ARKIA ISRAELI AIRLINES, LTD (ARK) 2 PG575 ASEAN AVIATION (L) INC. (ASJ) 2 PG578-PG583 3 PK920
AVENSA (AVN) 3 PK042-PK043
AVIATECA (AVT) 2 PL736-PL737 PL740-PL741
AVIOGENEX AIR TRANSPORT (AVG) 3 PL501 PL506
BOURAQ INDONESIA AIRLINES (PTB) 2 PL742 3 PK501 PK913 PK918 PK931 PL743-PL744
BRITISH AIRWAYS (BAB) 3 PK731-PK749 PK771-PK772 PK774-PK777 PK779 CALDWELL AIRCRAFT TRADING CO. (CAS) 2 PG402
CAMBODIAN INTERNATIONAL AIRLINES (CAK) 2 PJ072
CAMEROON AIRLINES (CAM) 2 PY046-PY047 Jun 30/94 737-53A1166 REV 1: May 25/95 3
BOEING SERVICE BULLETIN 737-53A1166 CANADIAN AIRLINES INTERNATIONAL LTD. (CDI) 2 PY303-PY304 3 PK358 PK671-PK675 PK677-PK680 PK822 PK881 PK884 PL401-PL417 PL764-PL770 PM141-PM142 PY151-PY154 PY421-PY422 PY441
CANAIR CARGO (CAZ) 3 PK026-PK027
CARNIVAL AIR (CVL) 2 PG305 PG312 PL712 3 PJ007-PJ008
CASINO EXPRESS (CIN) 2 PG279 PG436 3 PK461
CAYMAN AIRWAYS (CAY) 3 PJ009 PK222
COMAIR (CML) 2 PG353-PG354 PG356 3 PK355
CONSOLIDATED PRESS HOLDINGS (CPH) 3 PJ109 CONTINENTAL AIRLINES, INC. (CAL) 1 PA006-PA009 PA011 PG199 2 PA012 PA014 PA016-PA020 PG056 PG064 PG225 PG433 PG501-PG505 PG621-PG625 PG627-PG628 PG630 PG704 3 PL001 COPA COMPANIA PANAMENA DE AVIATION S.A. (COP) 2 PY341 3 PJ107 PJ112 PK465 PK617 PL745 PY201
CROATIA AIRLINES (CRH) 3 PK904 PK906-PK907 PK928 PK932 DAMANIA AIRWAYS LTD. (DAI) 3 PL451-PL452 PN081-PN082 DELTA AIR LINES, INC. (DAL) 3 PK611 PK613 PK623-PK624 PL221 4 PN131-PN135
E G AND G (EGN) 3 PL763
E-SYSTEMS (ESM) 2 PG208
EAS EUROPE AIRLINES (EUR) 3 PK203 PK215 PK282 PK359 PK564 PK612
EAST WEST AIRLINES (INDIA) (BOM) 3 PK615-PK616 PK819 PK824 PL171 Jun 30/94 737-53A1166 REV 1: May 25/95 4
BOEING SERVICE BULLETIN 737-53A1166 EDRESS, SHIEKH M. (SME) 3 PL505
EGYPTAIR (EGP) 3 PK255 PK257-PK258 EL AL ISRAEL AIRLINES, LTD. (ELA) 3 PL631-PL632
EURALAIR (ERA) 2 PG026 PG028-PG029 PY004 PY006
FAR EASTERN AIR TRANSPORT (FAT) 1 PA002 PA005 2 PG055 PG226 PG228 PG230 3 PK562 FAUCETT (COMPANIA DE AVIATION S.A. (FCT) 2 PC002 PG034 PG213 PL711 3 PK241 PL758
FLIGHTSTAR AVIATION CORPORATION (FST) 2 PG274
FRENCH POSTAL OFFICE (FPO) 2 PY302 PY344 3 PY101-PY103
FRONTIER AIRLINES (FRO) 2 PG304 PG306 PG308 PG310-PG311
GARUDA INDONESIAN AIRWAYS (GIA) 3 PK917 PK929-PK930
GATARI AIR SERVICE (GRI) 3 PL441
GB AIRWAYS (GBA) 3 PJ110-PJ111 GE CAPITAL AVIATION SERVICES, INC. (GEH) 1 PG272 2 PG218-PG219 PG651-PG652
GOVERNMENT OF BRAZIL (BRZ) 3 PK068-PK069
GOVERNMENT OF MEXICO (MXG) 2 PC005 PG223
GOVERNMENT OF SHARJAH (SHJ) 3 PL581 GPA GROUP LTD. (GUI) 3 PK252 PK614
GULF AIR (GUL) 3 PK467-PK468 Jun 30/94 737-53A1166 REV 1: May 25/95 5
BOEING SERVICE BULLETIN 737-53A1166
HAPAG LLOYD (HAP) 3 PL504
INDIAN AIR FORCE (IDF) 2 PH712-PH713 4 PM016-PM017
INDIAN AIRLINES (IND) 2 PH709 PH711 3 PH021 PH024 PK231-PK233 PK235-PK240 PM001-PM006 PY631
INDONESIAN AIR FORCE (IDO) 3 PL601-PL602 4 PL603
INTEGRATED RESOURCES (INH) 1 PG271 2 PG273 PG403 3 PK697
INTERNATIONAL AIR LEASES (IAL) 2 PG048 PJ001
INTERNATIONAL AIRLINE SUPPORT GROUP (ASG) 2 PG021 INTERNATIONAL PACIFIC TRADING CO. (IPT) 2 PG572 PG574 PJ102
IRAN AIR (IRN) 2 PH731 PY021 3 PK391 PY022
IRAQI AIRWAYS (IRQ) 3 PY141-PY142 JAPAN TRANSOCEAN AIR CO., LTD. (SWL) 3 PK521 PK523-PK525
JETALL HOLDING CORPORATION (JEL) 2 PY002 PY005
KENYA AIRWAYS (KEN) 3 PK253 PK256
LACSA (LAC) 3 PK357 PK871
LADECO (LDE) 2 PL802 3 PJ004-PJ006 PK029 PK212 PK281 PK826 PK830 LAN-CHILE S.A. (LAN) 3 PK360 PK825 PL025-PL026 PL028
LAPA (LAZ) 2 PG355 3 PK047 PK051 PK463 Jun 30/94 737-53A1166 REV 1: May 25/95 6
BOEING SERVICE BULLETIN 737-53A1166
LINA CONGO (LNA) 3 PY411
LINHAS AEREAS DE MOZAMBIQUE (LAM) 2 PH703 PY031
LITHUANIAN AIRLINES (LIJ) 3 PK563
LUFTHANSA GERMAN AIRLINES (DLH) 2 PY345 3 PK901-PK903 PK911-PK912 PK914-PK916 PK919 PK921-PK923 PK926-PK927
MAGNICHARTERS (MAM) 2 PG224 3 PJ003
MALEV HUNGARIAN AIRLINES (HGA) 3 PK284-PK285 PK636-PK637 PK827
MANDALA AIRLINES (MND) 3 PK874 PK924-PK925 PL027 PL061 PL421 PN002 MARKAIR, INC. (ALK) 3 PK632 PL611 4 PY056-PY057
MODILUFT (MOU) 3 PK905 PK908-PK910
MONTELY II (MOY) 2 PJ031
NASA (NAS) 1 PA099
NATIONAL AIRLINES (NAW) 2 PJ104 3 PJ105-PJ106
NICA (NICARAGUENCE DE AVIACION) (NIC) 3 PK823 NIGERIA AIRWAYS, LTD. (NIA) 3 PL781-PL782 PL785-PL788
NORDIC EAST (NOE) 2 PJ002
NWT AIR (NTA) 2 PX701 3 PY132-PY133 PY281
OLYMPIC AIRWAYS (OLY) 3 PK301-PK304 PK307-PK310 PM021-PM023 P. T. AIRFAST (PTF) 2 PG204 PG278 PY343 Jun 30/94 737-53A1166 REV 1: May 25/95 7
BOEING SERVICE BULLETIN 737-53A1166 PETROLAIR SYSTEMS S. A. (PTS) 3 PL471
PLUNA (PLU) 3 PL201-PL203
PRESIDENTIAL AIR (PRB) 2 PC003
REPUBLIC OF NIGER (NIR) 3 PY166
ROYAL AIR MAROC (RAM) 3 PK271-PK274 PY671 4 PY672
RYANAIR (RYR) 3 PJ114-PJ115 PK503 PK801-PK804 PN001 SABENA S.A. (SAB) 3 PK041 PK044-PK046 PK048-PK050 PK052-PK053 PK431 PK433 PY272-PY275 SAETA S.A. (SAE) 3 PK211 PK561
SAHARA INDIAN AIRLINES (SAQ) 3 PK820 SAHSA (SERVICIO AEREO DE HONDURAS,S.A.) (SAH) 2 PJ071
SAKHALIN AIRLINES (SKH) 2 PG214 SAUDI ARABIAN AIRLINES CORP. (SVA) 2 PL726-PL728 PY036-PY037 3 PK311-PK317 PL729-PL735
SAUDI ROYAL FLIGHT (SRF) 3 PK318
SERVICIOS AEREOS RUTAS ORIENTE, (SARO) (SEV) 2 PA015 PA021-PA022 PJ032
SHAHEEN AIR INTERNATIONAL (SHK) 3 PK514 SHANNONAIR LEASING LTD. (SLE) 3 PK352
SIERRA PACIFIC AIRLINES (SRP) 3 PK627
SOUTH AFRICAN AIRWAYS (SAA) 3 PL101-PL113 Jun 30/94 737-53A1166 REV 1: May 25/95 8