说明成果2015年会bfwd sump oil leakage

FWDSumpOilLeakageTechnicalReviewMeetingSuzhou,4-6November2015苏州,2015年11月4-6aretrademarksofCFMInternational,a50/50joint betweenSnecma(Safrangroup)andGE.Theinformationinthis 3/CFMProprietaryInformationsubjecttorestrictionsonthe4/CFMProprietaryInformationsubjecttorestrictionsontheNo.3BearingFWDSealOverviewNo.3BearingForwardSeal,PN1851M47G01:CompositesealbodywithTeflonstripsonthefrontandrearsideofsealhousing17+yearsofexperiencewithpartas-is.NochangesindesignsinceEISNO.3NO.3BearingFWDSealPN1851M47G01Teflonsealsbondedto5/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015PN6/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015FleetExperienceNo.3BrgForwardStationarySealexperiencingAftTeflonstripdisbond20UERsduringlast12Symptom-highoilconsumptionandTeflondebrisfoundinFWDMCDOccurrs~8,000cyclessinceCFMexperiencelimitedtoAFTTeflonsealTeflonstrip7/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,20157B机队发生3号轴承前 过去12个月有20起UER症状发生在CSN8,000CFM8/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015CFMInvestigationandRootCauseLabfinding3partswerepulledfromUERenginesforfailureysis.1newpartremovedforcomparisonFailuremodeisadhesivefailureSeparationbetweenTeflonandAdhesivenotpresentonTeflonbondingsurfaceLab ysesdetectedsilicone(moldreleaseagent)onbondingsurfacesManufactureFacilityAuditMultiple rauditconductedonsiteDetectedsiliconepresentonworktablesinsideNo.3FWDsealbondingroomConclusion:Primarycontributor:Contaminationonbondingsurfacesduringmanufacturingprocess9/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015CFM 结论10/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015CorrectiveactionandField Correctiveactionat r:Contaminatedtableswerere cedBondingstationhasbeenstrippedandcleanedOperatorrevisedproceduretodiscardglovesafterre-entryintoroomAddressinghumanfactorsduringassemblyConductedadditionalannualBonding&CompositesTrainingandTestingfortheentire rfacilityField n:UpdateWorkScope nningGuideforHOCenginereturnstoensure#3FWDsealisrepairedUpdateFIMtroubleshootingwhenTeflondebrisfoundinFWDsumpCFM mendstomonitoroilconsumptionlevelKeepengineonwingprovidingoilconsumptionlevelwithlimitProactiveremovalof#3FWDsealnot mendedatthistime11/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015Continuemonitoringfleettoidentifypossible population供应商改正措施 现场计划 CFM建 12/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,201513/CFMProprietaryInformationsubjecttorestrictionsonthe14/CFMProprietaryInformationsubjecttorestrictionsontheNo.3BearingAFTSealOverviewNo.3BearingAftSeal:PN1853M10G01usedon-7BsinceEISDec.1997PN1853M10G03introducedtoservicebySB72-0574,cat4,in2006--Improvedadhesive(FM57)tofixTeflonstripdelaminationandoildraincover1853M101853M10No.BearingAftSealFWD15/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015PN1853M10G01自1997年开始使用於7BPN1853M10G03在2006年由4级SB72-0574使用--使用新型黏著剂(FM57),纠正了特氟龙封条及33 Seal16/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015FleetExperiencePreSBTeflonstrip

PreSBOildraincover

PostSBRepairedSeal–OilDraincover 17/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015执行SB前-

执行SB前-

执行SB修理后的–余油盖漏 18/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015PostSB72-0574,RepairedPartIssue11UERsand3SVsrelatedtoT-coverleakinlasttwoyearsSymptoms:Highoilconsumptionand/orFWDsumpdrainoilleakAllsealsrepairedperSB72-0574atStandardAero(onlyonerepairfacility)Removedat~12,000-16,000hoursand~6,000-11,000cyclesafterrepairCrackinginmultiplelocationsoncosmetic(adhesive)filletaroundT-coverLeakageindifferentlocationsofoildraincoverduringpressuretestDisbondedandmissing Leakageatpressure19/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015执行SB72-0574，修后部件问题过去2年有11起UER,和3起送修与T形余油盖相关所 修理均依照SB72-0574在StandardAero执行(只有一间修理厂12,000-16,000小时6,000-11,000 20/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015Investigation&RootCauseInvestigation:UnexpectedgapsfoundbetweenT-coverandBasematerialUnevensurfaces,worstgapspresentattheT-covertransitionfromflattofilletradiusCFMhasnotexperiencedthisissueonnon-repairedpartsRootCause:Thesurfacepreparationatrepairshop(cleanliness,removal,etc.)isdrivinghigherfalloutrateT-coverremovalprocesscandamagebasesurfaceLackofstandardizedsurfacepreparationprocedurecouldresultofunevensurfacecontrolCrosssection21/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015&:CFM根本原因车间表面处理工艺(清洁拆除等等)剖面22/CFMProprietaryInformationsubjecttorestrictionsonthe TechnicalReviewMeeting,Suzhou,2015RepairshopActionandField mendationUpdateRepair forShop:(implementedonOct31,2015)StandardizeT-coverremovalprocess,ensurenosurfacedamageduringpreparationClearlydefinesurfaceprofilerequirementtoensuresealbodymatchesT-cover,useagagetooltoinspectsu