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Commercial Airplane Group 767 Service Bulletin Number: 767-57A0060 Revision Transmittal SheetDate: January 30, 1997 Revision 1: December 31, 1998 ATA System: 5740 2781 2811 SUBJECT: WINGS - Leading Edge and Leading Edge Devices - Slat Track Housing - Drain Tube Fuel Leak Inspection and Rework This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on Group 1 airplanes inspected or reworked as shown in the initial release of this service bulletin as a result of this revision. However, repeat inspections are required until terminating action is accomplished.
More work is necessary on the Group 2 airplane VE066 reworked as shown in the Validation Copy 1 release of this service bulletin. After the validation of this service bulletin was completed on VE066 additional grounding requirements were added as given in the PART IV - ADDITIONAL WORK.
REASON FOR REVISION This revision is sent to add terminating action to this service bulletin as follows:
1. Figures 3, 4, 5 and the PART - III TERMINATING ACTION are added to provide instructions to install a new slat track housing drain tube assembly for Group 1 and 2 airplanes.
2. Figure 6 and PART IV - ADDITIONAL WORK are added to provide instructions to rework the slat track housing drain tube assembly for the Group 2 airplane that incorporated PART III - TERMINATING ACTION as specified in Validation Copy 1.
3. Manpower tables are added for installation of the new slat track housing drain tube assembly.
4. Kit and Material Availability information is added for the new slat track housing drain tube installation.
As part of a service bulletin validation program, this change was completed on airplane VE066 by Service Bulletin 767-57A0060 Validation Copy 1 before the release of Revision 1 of this service bulletin. The change completed on airplane VE066 by Service Bulletin 767-57A0060 Validation Copy 1 is equivalent to the release of Revision 1 of this service bulletin except airplane VE066 requires more work as shown in PART IV - ADDITIONAL WORK.
Paragraph 1.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 1.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
REVISION HISTORY Initial Release: January 30, 1997 Revision 1: December 31, 1998 767-57A0060 Revision Transmittal Page 1 of 1
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Commercial Airplane Group 767 Service Bulletin Number: 767-57A0060 SummaryDate: January 30, 1997 Revision 1: December 31, 1998 ATA System: 5740 2781 2811 SUBJECT: WINGS - Leading Edge and Leading Edge Devices - Slat Track Housing - Drain Tube Fuel Leak Inspection and Rework
CONCURRENT REQUIREMENTS None
BACKGROUND This service bulletin gives instructions to inspect for fuel leaks from the number 5 and 8 inboard slat track housing drain locations near the engine exhaust nozzles. Instructions are also given to rework or replace the slat track housing drain tube assembly as required. Fuel leaks from these drain locations could result in a fire when the airplane is standing still or in a low speed taxi.
Accomplishment of this service bulletin will ensure the integrity of the drain tubes common to the slat track housing and prevent possible fuel leaks near an engine or exhaust nozzle when the airplane is on the ground.
One operator reported a fuel leak from a slat track housing drain tube where the drain tube penetrates the lower wing skin. Further investigation revealed the fuel leak originated from a loose drain tube fitting. Six other operators have also reported fuel leaks from the slat track housing drain tube where the drain tube penetrates the lower wing skin.
Further investigation revealed the fuel leaks originated from a crack in each of the drain tubes.
The slat track housing drain tubes provide a drain path for moisture which can accumulate inside the slat track housing. The drain tubes are located inside the wing fuel tanks. Cracks in the drain tubes or a loose fitting can result in fuel migration into the drain tubes.
As part of a service bulletin validation program, this change was completed on airplane VE066 by Service Bulletin 767-57A0060 Validation Copy 1 before the release of Revision 1 of this service bulletin. The change completed on airplane VE066 by Service Bulletin 767-57A0060 Validation Copy 1 is equivalent to the release of Revision 1 of this service bulletin except airplane VE066 requires more work as shown in PART IV - ADDITIONAL WORK.
Boeing Service Related Problem (SRP) 767-SRP-57-0072 is related to this service bulletin.
ACTION (PRRB12900-133) Inspect the exterior lower wing surface for fuel leaks at the inboard slat track housing drain location of each wing.
If an indication of a fuel leak is found:
1. Rework the drain tube per PART II - REWORK and repeat the PART I - VISUAL INSPECTION until the PART III - TERMINATING ACTION is completed or,
2. Replace the drain tube per PART III - TERMINATING ACTION.
Group 2 airplanes rework the drain tube per PART IV - ADDITIONAL WORK.
EFFECTIVITY All 767 airplanes line positions 1 through 671 divided in two groups.
COMPLIANCE See Figure 1 for compliance recommendations and maintenance alternatives. For the Group 2 airplane Boeing recommends the PART IV - ADDITIONAL WORK be completed within 5000 flight-cycles or 22 months, whichever is earlier from the release of Revision 1 of this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of May 6 1996. Please refer to Paragraph 2.B., Industry Support Information.
767-57A0060 Summary Page 1 of 2
BOEING SERVICE BULLETIN 767-57A0060
MANPOWER See Paragraph 1.G., Manpower.
MATERIAL INFORMATION Boeing Supplied Kits Refer to Paragraph 2.A., Material - Price and Availability.
OR REPLACE THE DRAIN TUBE IF REQUIRED.
DRAIN LOCATION OF EACH WING. REWORK
INSTALLATION
DRAIN TUBE
DO A VISUAL INSPECTION OF THE
LEFT WING SHOWN
RIGHT WING SIMILAR SPAR FRONT
AT THE INBOARD SLAT TRACK HOUSING
LOWER WING SURFACE FOR FUEL LEAKS R93555 January 30, 1997 767-57A0060 Revision 1: December 31, 1998 Summary Page 2 of 2
Commercial Airplane Group 767 Service Bulletin Number: 767-57A0060 Date: January 30, 1997 Revision 1: December 31, 1998 ATA System: 5740 2781 2811 SUBJECT: WINGS - Leading Edge and Leading Edge Devices - Slat Track Housing - Drain Tube Fuel Leak Inspection and Rework
THIS SERVICE 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 Refer to Service Bulletin Index Document D624T001, Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below. An equivalent change is on subsequent production airplanes. Refer to PRRB12900-133 for data about this change.
IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER
ABX AIR (ABX) 1 VB101-VB105
AEROFLOT (ARO) 1 VN561-VN562
AEROMEXICO (AMX) 1 VF091 VF093 VN556
AIR ALGERIE (ALG) 1 VK131-VK133
AIR CANADA (ACN) 1 VA701-VA719 VB001-VB002 VB201-VB202 VN931-VN936
AIR CHINA (BEJ) 1 VE064-VE065 VE083-VE086 VK161-VK164
AIR EUROPA (ARE) 1 VB323 VB328 VN546-VN547
AIR EUROPE ITALY (EIY) 1 VL931-VL932 VN682 VN753 VN811-VN812 VN972 January 30, 1997 767-57A0060 Revision 1: December 31, 1998 Page 1 of 42
BOEING SERVICE BULLETIN 767-57A0060
AIR FRANCE (AFA) 1 VN631-VN635
AIR MADAGASCAR (MAD) 1 VN376
AIR MAURITIUS (MAU) 1 VF001-VF002
AIR NAMIBIA (NAM) 1 VN385
AIR NEW ZEALAND (ANZ) 1 VB324 VE101-VE103 VN651-VN657 VN813
AIR PACIFIC (APC) 1 VN676
AIR SEYCHELLES (ASY) 1 VF051 VL941
AIR ZIMBABWE (ZMB) 1 VF061-VF062
AIRTOURS INT'L AIRWAYS (GUE) 1 VN951-VN953
ALITALIA (ALI) 1 VN422-VN427
ALL NIPPON AIRWAYS (ANA) 1 VB106-VB125 VK081-VK113 VN191-VN198
AMERICAN AIRLINES (AAL) 1 VA501-VA530 VN001-VN041
ANSETT AUSTRALIA (ANS) 1 VB051-VB055 VB321-VB322 VB325 VE118 VL755
ASIANA AIRLINES (AAR) 1 VK141-VK148 VL703 VN751 VW851
AVIANCA (AVI) 1 VE171-VE172 VF092 VN152
BIRGENAIR (BIR) 1 VE041
BRITANNIA AIRWAYS (BRI) 1 VB326-VB327 VB329-VB332 VL911-VL914 VN731
BRITISH AIRWAYS (BAB) 1 VN111-VN127 VN130-VN137
CANADIAN AIRLINES (CDI) 1 VN051-VN054 VN057-VN062 VN752 January 30, 1997 767-57A0060 Revision 1: December 31, 1998 2
BOEING SERVICE BULLETIN 767-57A0060
CHINA SOUTHERN AIRLINES (GUN) 1 VL701-VL702
CHINA YUNNAN AIRLINES (YUN) 1 VL871-VL873
CITY BIRD (CBD) 1 VN436
CONDOR (CDF) 1 VN683-VN691
DELTA AIR LINES (DAL) 1 VA301-VA315 VK031-VK056 VL753 VN251-VN273 VN301-VN306
EGYPTAIR (EGP) 1 VN211-VN212
EL AL ISRAEL AIRLINES (ELA) 1 VB281-VB284 VF101-VF102
ETHIOPIAN AIRLINES (ETH) 1 VE001-VE002 VN371
EVA AIR (EVA) 1 VB441-VB444 VN471-VN472 VN791-VN792
GULF AIR (GUL) 1 VL003-VL006 VN307-VN310 VN313-VN314 H.M.S.F. AND AMEDEO CORP. (BWN) 1 VF180
ITOCHU CORPORATION (CIT) 1 VF181-VF184
JAPAN AIRLINES (JAL) 1 VB371-VB373 VK001-VK015 VK021-VK022 VK181 K.B.A. FOUNDATION (KBA) 1 VN312
KALAIR USA CORP (KLA) 1 VN311
KLM - ROYAL DUTCH AIRLINES (KLM) 1 VL891-VL900
LAM (LAM) 1 VF162
LANCHILE AIRLINES (LAN) 1 VN063-VN064 VN531 VN557 VN966-VN969 VN971
LAUDA AIR (LAL) 1 VN242-VN243 VN388 January 30, 1997 767-57A0060 Revision 1: December 31, 1998 3
BOEING SERVICE BULLETIN 767-57A0060 LAUDA AIR S.P.A. (LDI) 1 VL011 VN671
LEISURE INTERNATIONAL AIRWAYS (UKL) 1 VN921-VN922
LOT POLISH AIRLINES (LOT) 1 VF041-VF042 VN291-VN293
LTU (LTU) 1 VN171-VN174 VN381
MALEV HUNGARIAN AIRLINES (HGA) 1 VF171-VF172
MARTINAIR HOLLAND (MTH) 1 VN221-VN225 VN672
MID EAST JET (SKL) 1 VF251
MIDAIR (MAI) 1 VE021
QANTAS (QAN) 1 VE061-VE063 VE067-VE069 VN081-VN099 2 VE066
ROYAL BRUNEI AIRLINES (RBA) 1 VN372 VN382-VN384 VN386-VN387 VN637-VN638
SAS (SAS) 1 VF071 VN151 VN153-VN158 VN163-VN168 VN536 VN551
SHANGHAI AIRLINES (SHA) 1 VK171
SOBELAIR (SBL) 1 VN421 VN636
SOUTH AFRICAN AIRWAYS (SAA) 1 VE022-VE023
SPANAIR (SPP) 1 VN541-VN542
TACA INTERNATIONAL AIRLINES (TAC) 1 VE116 VN732
THE BOEING COMPANY (TBC) 1 VA001
TRANSBRASIL (TBL) 1 VB251-VB253 VE104 VE117 VF072 VF161 VL001-VL002 VN532
TWA (TWA) 1 VA801-VA810 VB301-VB302 VN681 January 30, 1997 767-57A0060 Revision 1: December 31, 1998 4
BOEING SERVICE BULLETIN 767-57A0060
UNITED AIRLINES (UAL) 1 VA002-VA020 VN491-VN513
UPS (UPS) 1 VW701-VW718
US AIRWAYS (USA) 1 VE141-VE152
UZBEKISTAN AIRWAYS (UZB) 1 VL806-VL807
VARIG AIRLINES (VAR) 1 VE121-VE126 VN055-VN056 VN231-VN234
VIETNAM AIRLINES (VIE) 1 VL751-VL752 VL754 WHIRLPOOL FINANCIAL CORP. (ZZW) 1 VN537
IDENTIFICATION BY VARIABLE NUMBER GROUP 1 VA001-VA020 VA301-VA315 VA501-VA530 VA701-VA719 VA801-VA810 VB001-VB002 VB051-VB055 VB101-VB125 VB201-VB202 VB251-VB253 VB281-VB284 VB301-VB302 VB321-VB332 VB371-VB373 VB401 VB441-VB444 VE001-VE003 VE021-VE023 VE041-VE043 VE061-VE065 VE067-VE069 VE083-VE086 VE101-VE104 VE116-VE118 VE121-VE126 VE141-VE152 VE171-VE172 VF001-VF002 VF041-VF042 VF051 VF061-VF062 VF071-VF072 VF091-VF093 VF101-VF102 VF161-VF162 VF171-VF172 VF180-VF184 VF251 VK001-VK015 VK021-VK022 VK031-VK056 VK081-VK113 VK131-VK133 VK141-VK148 VK161-VK164 VK171 VK181 VL001-VL006 VL011 VL701-VL703 VL751-VL755 VL806-VL807 VL871-VL873 VL891-VL900 VL911-VL914 VL931-VL932 VL941 VN001-VN041 VN051-VN064 VN081-VN099 VN111-VN127 VN130-VN137 VN151-VN158 VN163-VN168 VN171-VN174 VN191-VN198 VN211-VN212 VN221-VN225 VN231-VN234 VN241-VN243 VN251-VN273 VN291-VN293 VN301-VN314 VN371-VN372 VN376 VN381-VN388 VN421-VN427 VN436 VN471-VN472 VN491-VN513 VN531-VN532 VN536-VN537 VN541-VN542 VN546-VN547 VN551 VN556-VN557 VN561-VN562 VN631-VN638 VN651-VN657 VN671-VN672 VN676 VN681-VN691 VN731-VN732 VN751-VN753 VN791-VN792 VN811-VN813 VN921-VN922 VN931-VN936 VN951-VN953 VN966-VN969 VN971-VN972 VW701-VW718 VW851 GROUP 2 VE066
2. Spares Affected None January 30, 1997 767-57A0060 Revision 1: December 31, 1998 5
BOEING SERVICE BULLETIN 767-57A0060 B. Concurrent Requirements None C. Reason This service bulletin gives instructions to inspect for fuel leaks from the number 5 and 8 inboard slat track housing drain locations near the engine exhaust nozzles. Instructions are also given to rework or replace the slat track housing drain tube assembly as required. Fuel leaks from these drain locations could result in a fire when the airplane is standing still or in a low speed taxi.
Accomplishment of this service bulletin will ensure the integrity of the drain tubes common to the slat track housing and prevent possible fuel leaks near an engine or exhaust nozzle when the airplane is on the ground.
One operator reported a fuel leak from a slat track housing drain tube where the drain tube penetrates the lower wing skin. Further investigation revealed the fuel leak originated from a loose drain tube fitting. Six other operators have also reported fuel leaks from the slat track housing drain tube where the drain tube penetrates the lower wing skin. Further investigation revealed the fuel leaks originated from a crack in each of the drain tubes.
The slat track housing drain tubes provide a drain path for moisture which can accumulate inside the slat track housing. The drain tubes are located inside the wing fuel tanks. Cracks in the drain tubes or a loose fitting can result in fuel migration into the drain tubes.
Boeing Service Related Problem (SRP) 767-SRP-57-0072 is related to this service bulletin.
As part of a service bulletin validation program, this change was completed on airplane VE066 by Service Bulletin 767-57A0060 Validation Copy 1 before the release of Revision 1 of this service bulletin. The change completed on airplane VE066 by Service Bulletin 767-57A0060 Validation Copy 1 is equivalent to the release of Revision 1 of this service bulletin except airplane VE066 requires more work as shown in PART IV - ADDITIONAL WORK.
Revision 1 is sent to add terminating action to this service bulletin as follows:
1. Figures 3, 4, 5 and the PART - III TERMINATING ACTION are added to provide instructions to install a new slat track housing drain tube assembly for Group 1 and 2 airplanes.
2. Figure 6 and PART IV - ADDITIONAL WORK are added to provide instructions to rework the slat track housing drain tube assembly for the Group 2 airplane that incorporated PART III - TERMINATING ACTION as specified in Validation Copy 1.
3. Manpower tables are added for installation of the new slat track housing drain tube assembly.
4. Kit and Material Availability information is added for the new slat track housing drain tube installation.
D. Description Inspect the exterior lower wing surface for fuel leaks at the inboard slat track housing drain location of each wing.
If an indication of a fuel leak is found:
1. Rework the drain tube per PART II - REWORK and repeat the PART I - VISUAL INSPECTION until the PART III - TERMINATING ACTION is completed or,
2. Replace the drain tube per PART III - TERMINATING ACTION.
January 30, 1997 767-57A0060 Revision 1: December 31, 1998 6
BOEING SERVICE BULLETIN 767-57A0060 Group 2 airplanes rework the drain tube per PART IV - ADDITIONAL WORK.
No more work is necessary on Group 1 airplanes inspected or reworked as shown in the initial release of this service bulletin as a result of this revision. However, repeat inspections are required until terminating action is accomplished.
More work is necessary on the Group 2 airplane VE066 reworked as shown in the Validation Copy 1 release of this service bulletin. After the validation of this service bulletin was completed on VE066 additional grounding requirements were added as given in the PART IV - ADDITIONAL WORK.
The airplane effectivity is divided into two groups. Group 1 consists of airplanes that have not had terminating action incorporated prior to release of Revision 1 of this service bulletin. Group 2 consist of the airplane that had terminating action incorporated as specified in Validation Copy 1 of this service bulletin.
An evaluation form is attached to this service bulletin. Please use this form to tell us what you think of the quality of this service bulletin.
NOTE: Inspection, rework and maintenance alternatives are shown in a diagram in Section 3., ACCOMPLISHMENT INSTRUCTIONS.
E. Compliance See Figure 1 for compliance recommendations and maintenance alternatives. For the Group 2 airplane Boeing recommends the PART IV - ADDITIONAL WORK be completed within 5000 flight-cycles or 22 months, whichever is earlier from the release of Revision 1 of this service bulletin.
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.
G. Manpower 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 examine the work
- Time to cure the materials
- Time to make the parts
- Time to find the tools.
PART I - VISUAL INSPECTION Approximately 0.25 man-hours and 1 person is necessary to do the inspection for each wing.
January 30, 1997 767-57A0060 Revision 1: December 31, 1998 7
BOEING SERVICE BULLETIN 767-57A0060
PART II - REWORK Approximately 10.0 man-hours and 2 persons are necessary to do the rework for each wing.
PART III - TERMINATING ACTION Task Number of Persons Man-Hours Elapsed Time (Hours) Open Access 2 6 3 Remove Drain Tube Assy 2 4 2 Install Drain Tube Assy 2 6 3 Close Access 2 4 2 TOTAL FOR EACH WING 20 10 TOTAL FOR EACH AIRPLANE 40 20
PART IV - ADDITIONAL WORK Task Number of Persons Man-Hours Elapsed Time (Hours) Open Access 2 6 3 Rework Drain Tube Assy 2 4 2 Close Access 2 4 2 TOTAL FOR EACH WING 14 7 TOTAL FOR EACH AIRPLANE 28 14 H. Weight and Balance Changes Change in Weight Change in Moment + 1.7 lbs + 1547 lb-in I. Electrical Load Data Not changed January 30, 1997 767-57A0060 Revision 1: December 31, 1998 8