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SB INDEXMessier-Dowty LtdCAGE: K0654Cheltenham Road, Gloucester, GL2 9QH, EnglandTelephone: 44 (0) 1452 712424 Fax: 44 (0) 1452 713821SERVICE BULLETINLANDING GEAR - MAIN LANDING GEAR INSPECTION OF THE BOGIE BEAM INTERNAL DIAMETER FOR CORROSION AT OVERHAULPlanning Information1.A.EffectivityAircraft affected: AIRBUS A330/340Unit affected:Main Landing Gear Completewhich includesBogie and Dressingswhich includesBogie AssemblyPart/Type Nos.:B.201252 Series (Main Landing Gear Complete)201490 Series (Main Landing Gear Complete)10-210101 Series (Main Landing Gear Complete LH)10-210201 Series (Main Landing Gear Complete RH)which includes201274 Series (Bogie and Dressings)201486 Series (Bogie and Dressings)10-211501 Series (Bogie and Dressings)which includes201272 Series (Bogie Assembly)201485 Series (Bogie Assembly)10-211701 Series (Bogie Assembly)Concurrent Requirements(1)C.D.None.Reason(1)A bogie beam has fractured in-service.(2)Corrosion of the internal diameter of the bogie beam adjacent to the bogie beam pivotpin may have contributed to the fracture.(3)To perform specific inspections of the bogie beam bore condition, before removal of theprotective finishes.Description(1)Messier-Dowty Limited tells you that this Service Bulletin includes details to do a visualinspection on the bogie beam. The inspection includes:(a)A visual examination of the internal diameter for corrosion or damage toprotective treatments of the bogie beam. MESSIER-BUGATTI-DOWTY 2011 (AND SUBSEQUENT REVISION PAGE DATES)This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property rights aregranted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without theexpress written consent of Messier-Bugatti-Dowty.Safran and Messier-Bugatti names are marks owned respectively by Safran and Messier-Bugatti-Dowty companies. The mark Dowty isused under licence.Feb 17/2010Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 1 of 8
Messier-Dowty LtdSERVICE BULLETIN(b)(2)Messier-Dowty Limited tells you that you must complete the proforma in Appendix B toreport results of the inspection and return it to the address shown in Appendix B.(a)E.F.The information to be recorded is:1Any results showing no damage to protective treatments.2Any damage to paint.3Any damage to cadmium plate.4Any damage or corrosion of the base material.Compliance(1)Messier-Dowty recommend that you do this Service Bulletin at next overhaul.(2)It is expected that the contents of this Service Bulletin will be made MANDATORY byEASA.Approval(1)G.Measurement of the paint thickness on the internal bore.The technical content of this Service Bulletin has been approved under the authority ofthe EASA Design Organisation Approval No. EASA.21J.031.Manpower(1)Messier-Dowty Limited make an estimate that it will take approximately an additional 4man-hours to do this Service Bulletin at overhaul.NOTE:H.Weight and Balance(1)I.It is assumed that the equipment has been placed in a maintenancestatus. The man-hour estimates do not include preparation, close out oradministrative functions.None.References(1)Messier-Dowty Limited Component Maintenance Manual 32-11-70.(2)Messier-Dowty Limited Component Maintenance Manual 32-11-74.(3)Messier-Dowty Limited Component Maintenance Manual 32-11-94.(4)Messier-Dowty Limited Component Maintenance Manual 32-11-95.(5)Messier-Dowty Limited Component Maintenance Manual 32-12-01.(6)Messier-Dowty Limited Component Maintenance Manual 32-12-04.(7)Messier-Dowty Limited Component Maintenance Manual 32-12-05.(8)Messier-Dowty Limited Component Maintenance Manual 32-12-60.(9)Messier-Dowty Limited Component Maintenance Manual 32-12-63.(10) Messier-Dowty Limited Component Maintenance Manual 32-12-64.(11) Messier-Dowty Standard Practices Manual 20-00-10.(12) Aircraft Maintenance Manual.Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 2
Messier-Dowty LtdSERVICE BULLETINJ.Other Publications Affected(1)2.Material InformationA.Material - Price and Availability(1)3.None.None.Accomplishment InstructionsThe figure/item numbers in parentheses in the text agree with those that are in the illustratedparts list. Only the primary figure/item numbers are used. The Process Specifications (M-DLPS,M-DLNDT and PCS) are in the Standard Practices Manual.A.Procedure for a visual inspection of the internal diameter of the bogie beam for corrosion ordamage.(1)After disassembly of the bogie beam to detail level and before paint strip, clean all theinternal surfaces of the bogie beam (3-180, CMM 32-12-05, CMM 32-11-74 or 3-190CMM 32-12-64). Remove all grease, dirt and loose or damaged paint: refer toCLEANING in the applicable CMM.NOTE:(2)Fully inspect the internal diameter of the bogie beam (3-180, CMM 32-12-05, CMM32-11-74 or 3-190 CMM 32-12-64) for corrosion or damage to the protectivetreatments. Measure and record the depth of the protective treatments (A-H) using apermascope: refer to CHECK in the applicable CMM and Figures 3 and 4 of thisService Bulletin.NOTE:(3)B.Record the condition of the surface protection: record any flaking,discolouration, blistering and lack of coverage. If there is no corrosionor damage to the protective treatments record this on the proforma inAppendix B. Record the depth (A-H) of protective treatment on theproforma. Return a completed copy to the address shown in AppendixB.If you find corrosion: refer to Appendix A of this Service Bulletin for details of repairlimits.NOTE:(4)Use of pressure washer with water only to remove the main debriswithin the bogie beam was found to be effective during the developmentof this inspection procedure. Final cleaning by hand will still benecessary.If you find corrosion or damage to the protective treatments record thison the proforma in Appendix B.When you have completed the proforma in Appendix B, continue with the overhaul:refer to the applicable Component Maintenance Manual.Identification(1)After you have done this Service Bulletin:-write the Service Bulletin number A33/34-32-278 in the applicable aircraft andmain landing gear records.Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 3
Messier-Dowty LtdSERVICE BULLETINAREA OFINSPECTIONA340A4408-1Main Landing Gear Complete - Area of InspectionFigure 1Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 4
Messier-Dowty LtdSERVICE BULLETINZ(SEE FIGURE 3)YY (SEE FIGURE 4)BOGIE ASSEMBLYZA340A4851-1Bogie Beam - Area of InspectionFigure 2Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 5
Messier-Dowty LtdSERVICE BULLETINAREA ogie Beam - Area of InspectionFigure 3Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 6
Messier-Dowty LtdSERVICE BULLETINAREA OFINTERNALDIAMETERINSPECTION(360 DEGREES)A340A4411-1SECTION Y-YBogie Beam - Area of InspectionFigure 4Aug 24/2011 (Revision 1)Service Bulletin No. A33/34-32-278Page 7
Messier-Dowty LtdSERVICE BULLETIN4.Messier-Dowty and Messier Services ContactsA.Refer to the Messier-Dowty website (safranmbd.com) for the latest list of contact names,addresses and numbers.Messier-Dowty Inc.574 Monarch AvenueAjax, OntarioL1S 2G8CANADATel: 905-683-3100Fax: 905-683-6936Original Equipment ManufacturersMessier-Dowty LimitedCheltenham RoadGloucesterGL2 9QHENGLANDTel: 44(0)1452 712424Fax: 44(0)1452 713821Messier-Bugatti-DowtyLanding Gear & SystemsIntegration DivisionZone Aeronautique L. BreguetBP1078140 Velizy - VillacoublayFRANCETel: 33 146 29 18 00Fax: 33 146 29 8770Technical Assistance and Spares Support Centers (TASSC)For AOG (commercial and technical): aogtassc@safranmbd.comFor Europe - Africa - Middle East customers: eametassc@safranmbd.comTel: 33 1 5521 2590For Americas customers: americatassc@safranmbd.comTel: 1 404 305 2626For Asia-Pacific customers: asiatassc@safranmbd.comTel: 65 6245 5688Repair and Overhaul FacilitiesMessier Services R&O Facility Messier Services R&O FacilityMessier Services R&O Facility574 Monarch AvenueMeteor Business Park3, rue Antoine de St Exupery,Ajax, OntarioCheltenham RoadBP110L1S 2G8Gloucester GL2 9QL67124 Molsheim CedexCANADAENGLANDFranceTel: 905-683-3100Tel: 44(0)1452 713111Tel: (33) 38838 9200Fax: 905-683-0378Fax: 44(0)1452 716500Fax: (33) 38838 9399Messier Services (Asia) Pte. Ltd.R&O Facility21 Loyang Crescent,Loyang Industrial EstateSINGAPORE 508985Tel: (65) 6545 9455Fax: (65) 6542 3936Aug 24/2011 (Revision 1)Messier Services R&O Facility AmericasAv. La NoriaParque Industrial QuerétaroCarretera QRO-SLP, Km. 28.5Querétaro, QRO 76220MEXICOTel: 52 (442) 19 25 800Fax: 52 (442) 19 25 801HYDREP Aéroport deDinard-Pleurtuit-Saint-MaloBâtiment 20BP9015435801 DINARD CedexFRANCETel: (33) 2 99 82 79 79Fax: (33) 2 99 82 79 97Service Bulletin No. A33/34-32-278Page 8
Messier-Dowty LtdCAGE: K0654Cheltenham Road, Gloucester, GL2 9QH, EnglandTelephone: 44 (0) 1452 712424 Fax: 44 (0) 1452 713821SERVICE BULLETINAPPENDIX AMETHOD OF REPAIR TO THE BOGIE BEAM PROTECTIVE TREATMENTSProcedure1.A.For the method of repair to the bogie beam if the paint has lifted or if scratched or damagedpaint is found or if damage/corrosion or cracking of the bogie beam are found, refer to CMM32-12-05, CMM 32-11-74 or CMM 32-12-64 and Messier-Dowty Standard Practices Manual20-00-10.B.The Process Specifications (M-DLPS, M-DLNDT and PCS) are in the Standard PracticesManual.(1)If the paint is damaged. Record damage before locally masking the surrounding areaand stripping the paint: refer to PCS-2700.OR(2)Carefully remove damaged paint using Scotchbrite or fine emery paper.(a)Measure area of paint removed.NOTE: Measure and record the location of the reworked area in AppendixB, Figure 2. Return a completed copy of Appendix B to the addressshown in Appendix B.(3)Visually check the cadmium plating.(a)If the cadmium plating is damaged (grey in colour) or the plating depth is notsatisfactory but the base metal is not corroded.1Carefully remove the cadmium plating using Scotchbrite or fine emerypaper.2Measure the area of cadmium plating removed.NOTE:(4)Measure and record the location of the reworked area inAppendix B, Figure 2. Return a completed copy of Appendix Bto the address shown in Appendix B.If the base material has corrosion or damage.(a)Measure and record the maximum depth of corrosion.NOTE: Record the location, area and depth of corrosion on the proforma:refer to Appendix B.(b)Locally repair the corroded or damaged area: refer to the applicable ComponentMaintenance Manual. MESSIER-BUGATTI-DOWTY 2011 (AND SUBSEQUENT REVISION PAGE DATES)This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property rights aregranted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without theexpress written consent of Messier-Bugatti-Dowty.Safran and Messier-Bugatti names are marks owned respectively by Safran and Messier-Bugatti-Dowty companies. The mark Dowty isused under licence.Aug 24/2011 (Revision 1)APPENDIX AService Bulletin No. A33/34-32-278Page 1 of 4
Messier-Dowty LtdSERVICE BULLETINWARNING: BLEND RADIUS MUST BE APPLIED ALL AROUND THE REWORKEDAREA. MAKE SURE ALL BLENDS ARE SMOOTH.(c)The depth of material removal must be kept to a minimum making sure corrosionor damage is removed. The maximum permitted depth of material removal is:120,30 mm (0.012 in), this can be done to the internal diameter along thelength of the bogie beam: refer to Figure 1.OR0,40 mm (0.015 in), this can be done internally but only over the limitedwidth shown: refer to Figure 2.NOTE:(d)The blend radius must be minimum 10,00 mm (0.394 in) inArea A or minimum 100,00 mm (3.937 in) in Area B within thepositions shown: refer to Figure 1 or Figure 2.Measure the depth and area of material removed.NOTE: Measure and record the location, area and depth of the reworkedarea in Appendix B, Figure 2. Return a completed copy ofAppendix B to the address shown in Appendix B.(5)(e)Inspect the repaired area for corrosion or cracking: refer to the applicableComponent Maintenance Manual.(f)If the depth of material removed is more than 0,038 mm (0.0015 in) but less than0,40 mm (0.015 in) shot peen the repaired area: refer to PCS-2300 and REPAIRin the applicable Component Maintenance Manual.Complete the overhaul of the bogie beam: refer to the applicable ComponentMaintenance Manual.Aug 24/2011 (Revision 1)APPENDIX AService Bulletin No. A33/34-32-278Page 2
Messier-Dowty LtdSERVICE AREA AREMOVE DAMAGED ORCORRODED MATERIAL. USE10mm (0.394in) MINIMUM BLEND RADIUSWITHIN THIS LENGTH20,00mm (0.787in)AREA BREMOVE DAMAGED ORCORRODED MATERIAL. USE100mm (3.937in) MINIMUMBLEND RADIUSWITHIN THISLENGTH238,85mm (9.404in)DIAMETER0,30mm (0.012in)MAXIMUM100,00mm (3.937in) MINIMUM IN AREA Bor10,00mm (0.394in) MINIMUM IN AREA ABLEND RADIUS WITHINTHE POSITION SHOWN(SEE VIEW ABOVE)MAKE EDGES SMOOTH10,00mm (0.394in)MINIMUM BLEND RADIUS0,30mm (0.012in) MAXIMUM DEPTH REMOVALMAY BE USED AT ANY POSITION ALONGTHE LENGTH AND AROUND THE INTERNALCIRCUMFERENCE OF THE BOGIE BEAMA340A4918-1Bogie Beam - Area of RepairFigure 1Aug 24/2011 (Revision 1)APPENDIX AService Bulletin No. A33/34-32-278Page 3
Messier-Dowty LtdSERVICE BULLETINAXLE100,00mm (3.937in)RADIUSBOGIEPIVOT POINTAREA AREMOVE DAMAGED ORCORRODED MATERIAL. USE10mm (0.394in) MINIMUM BLEND RADIUSWITHIN THIS LENGTH0,40mm (0.015in)MAXIMUMMAKE EDGES SMOOTH10,00mm (0.394in)MINIMUM BLEND RADIUS20,00mm (0.787in)AREA BREMOVE DAMAGED ORCORRODED MATERIAL. USE100mm (3.937in) MINIMUMBLEND RADIUSWITHIN THISLENGTH10,00mm (0.394in) MINIMUM IN AREA Aor 100,00mm (3.937in) MINIMUM IN AREA BBLEND RADIUSWITHIN THE POSITIONS SHOWN(SEE VIEW ABOVE AND BELOW)238,85mm(9.404in)DIAMETER15 DEGREESEESEGRD15MAXIMUM WIDTH OF REPAIR62,53mm (2.462in)IF REQUIRED 0,40mm (0.015in) MAXIMUM REMOVALMAY BE USED AT ANY POSITION ALONG THE LENGTH ANDAROUND THE INTERNAL CIRCUMFERENCE OF THE BOGIE BEAMONLY WITHIN THE AREA INDICATEDA330A4919-1Bogie Beam - Area of RepairFigure 2Aug 24/2011 (Revision 1)APPENDIX AService Bulletin No. A33/34-32-278Page 4
Messier-Dowty LtdCAGE: K0654Cheltenham Road, Gloucester, GL2 9QH, EnglandTelephone: 44 (0) 1452 712424 Fax: 44 (0) 1452 713821SERVICE BULLETINAPPENDIX BAIRBUS A330/340 - MAIN LANDING GEAR - BOGIE AND DRESSINGSPROFORMA FOR REPORTING RESULTS OF INSPECTION SERVICE BULLETIN A33/34-32-278Customer DetailsAddress From Which The Item Has Been SentContact Name:Contact Tel. Number:Contact Fax Number:Regional CSC:Aircraft DetailsOperator:Aircraft MSN:M.L.G Serial No:Aircraft Type:Aircraft TSN:M.L.G TSN:Bogie and Dressings LH MLGor RH MLGPart Number:Serial No:Bogie Beam LH MLGPart Number:*Serial No (see page 3):Aircraft CSN:M.L.G CSN:(tick box as necessary) DetailsTSN:CSN:or RH MLG(tick box as necessary) DetailsTSN:CSN:Return Address For Proforma Appendix BMR D . PARSONS,SENIOR TECHNICAL TEAM LEADER,MESSIER-DOWTY CUSTOMER SERVICESDEPARTMENT,MESSIER DOWTY LIMITED,CHELTENHAM ROAD,GLOUCESTER,GL2 9QH,ENGLAND,FAX No: 44 01452 711972. MESSIER-BUGATTI-DOWTY 2011 (AND SUBSEQUENT REVISION PAGE DATES)This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property rights aregranted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without theexpress written consent of Messier-Bugatti-Dowty.Safran and Messier-Bugatti names are marks owned respectively by Safran and Messier-Bugatti-Dowty companies. The mark Dowty isused under licence.Aug 24/2011 (Revision 1)APPENDIX BService Bulletin No. A33/34-32-278Page 1 of 4
Messier-Dowty LtdSERVICE BULLETINFWDTHIS IS AN EXAMPLEOF HOW TO RECORD AREADIMENSIONS ANDLOCATION OF DAMAGE TOPROTECTIVE TREATMENTSAND BASE MATERIALAND AREA OF REPAIRKEYBASE MATERIALCOROSIONBASE MATERIALREPAIRCADMIUM mm(XXXin)AXLEXXX SDAMAGED/REPAIRAREA180BOGIE PIVOT PINDEGREESCENTERLINEVIEW ON ARROWAXXXmm(XXXin)XXXmm (XXXin)WIDTHXXXmm (XXXin)MAXIMUM DEPTHOF BLENDAXLEPART SECTIONDAMAGE FOUND360AFT DEGREES180DEGREES270DEGREES0DEGREES90DEGREESNO DAMAGE FOUNDZ-ZRECORD RESULTS ON PAGE 3OF APPENDIX B.RETURN PAGES 1 AND 3OF APPENDIX BRETURN PAGE 1, PAGE 3AND PAGE 4 OF APPENDIX BADEVELOPED VIEW OF BOGIE BEAM BOREA340A4916-1Bogie Beam - Developed View of Bogie Beam Bore - Area of RepairFigure 1Aug 24/2011 (Revision 1)APPENDIX BService Bulletin No. A33/34-32-278Page 2
Messier-Dowty LtdSERVICE BULLETINUSE THE ILLUSTRATION BELOW TO MARK THE LOCATION OF REPAIRFWDMEASURE AREA OF DAMAGETO PROTECTIVE TREATMENTAND BASE MATERIAL AND AREA OF REPAIRAND RECORD DIMENSIONSANDLOCATION ON THIS DIAGRAMLOCATION OF*BOGIEBEAMSERIAL NUMBERREWORK AREAVIEW ON ARROWABOGIE PIVOT PINCENTERLINEPART SECTIONZ-Z(REFER TO FIGURE 1)AIRCRAFT DETAILSAIRCRAFT MSNBOGIE BEAMSERIAL NUMBERNO DAMAGEFOUNDDAMAGEFOUND(TICK BOX AS NECESSARY)ADEVELOPED VIEW OF BOGIE BEAM BOREA340A4917-1Bogie Beam - Developed View of Bogie Beam Bore - Area of RepairFigure 2Aug 24/2011 (Revision 1)APPENDIX BService Bulletin No. A33/34-32-278Page 3
Messier-Dowty LtdSERVICE BULLETINMEASURE THE PROTECTIVETREATMENT DEPTHAND RECORD DIMENSIONS IN THETABLE AT LOCATIONS SHOWNFWD0/360 937in)100mm(3.937in)100mm(3.937in)B180 DEGREESAVIEW ON ARROWABOGIE PIVOT EGREES270DEGREES0DEGREES90DEGREESADEVELOPED VIEW OF BOGIE BEAM BOREMEASUREMENTS A TO H MUST BE DONE IN AN AREAWHERE THE PAINT IS NOT DAMAGED. IF THIS IS NOTPOSSIBLE MEASURE AT THE NEAREST POINT WHERETHE PAINT IS NOT DAMAGED. FIVE MEASUREMENTSARE NECESSARY AT EACH LOCATION.A340A4842-1Bogie Beam - Developed View of Bogie Beam Bore - Protective Treatment Depth LocationFigure 3Aug 24/2011 (Revision 1)APPENDIX BService Bulletin No. A33/34-32-278Page 4
Messier-Dowty LtdCAGE: K0654Cheltenham Road, Gloucester, GL2 9QH, EnglandTelephone: 44 (0) 1452 712424 Fax: 44 (0) 1452 713821SERVICE BULLETINAIRBUS A330/A340 MAIN LANDING GEARSERVICE BULLETIN A33/34-32-278TRANSMITTAL LETTER FOR REVISION 1DATE AUG 24/2011REASON1.A. To add A330/340 10-210101 and 10-210201 Enhanced Main Landing Gear references.ACTION2.A. Remove and destroy existing pages 1 to 8 and substitute revised pages 1 to 8 datedAug 24/2011.B. Appendix A. Remove and destroy existing pages 1 to 4 and substitute the revised pages 1 to 4dated Aug 24/2011.C. Appendix B. Remove and destroy existing pages 1 to 4 and substitute the revised pages 1 to 4dated Aug 24/2011.PREVIOUS REVISION/ISSUE DETAILS3.Revision StatusA. Initial IssueDateFeb 17/2010 MESSIER-BUGATTI-DOWTY 2011 (AND SUBSEQUENT REVISION PAGE DATES)This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property rights aregranted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without theexpress written consent of Messier-Bugatti-Dowty.Safran and Messier-Bugatti names are marks owned respectively by Safran and Messier-Bugatti-Dowty companies. The mark Dowty isused under licence.Page 1 of 1
(7) Messier-Dowty Limited Component Maintenance Manual 32-12-05. (8) Messier-Dowty Limited Component Maintenance Manual 32-12-60. (9) Messier-Dowty Limited Component Maintenance Manual 32-12-63. (10) Messier-Dowty Limited Component Maintenance Manual 32-12-64. (11) Messier-Dowty Standard Practices Manual 20-00-10. (12) Aircraft Maintenance Manual.
