_.,SAFRAN-..._;;/40220Tarnos-FranceTel.+33(0)559744000Fax+33(0)559744515JborcMANDATORYSERVICEBULLETINARRIEL1No.292720839Subject:41/23toothbevelgearassemblyoftheaccessorygearbox(moduleM01).ApplicationofTlNo.292720839orNo.292720840referencingvibrationcheck.ThetechnicalinformationcontainedinthisdocumentisapprovedundertheAuthorityofDesignOrganizationApprovalNo.EASA.21J.070.DateonwhichthisMandatorySBbecomeseffectiveandmustsystematicallybecompliedwith,accordingtotheconditionsofapplication.ApplicablefromNOVEMBER2013Iftheresources(parts,tools,documentation,etc.)areavailableanyearlier,theMandatorySBmay,beappliedpriortotheeffectivitydate.Version:CReasonforupdate:Accuracyoncompliance conditionsNOTES(paragraph2.2)Applicablevariants.ARRIEL1B-D-01SB292720839EN-C<June18,2014>-1/11SAFRAN1"CJMANDATORYSERVICEBULLETIN2.APPLICATIONATTHEOPERATOR'SSITEORBYAMAINTENANCECENTERQUALIFIEDFORLEVEL1,2WARNING:FAILURETOAPPLYTHISMANDATORYSERVICEBULLETINMAYLEADTOANUNCOMMANDEDIN-FLIGHTENGINESHUT-DOWNWHICH,ONASINGLE-ENGINEHELICOPTER,MAYLEADTOANEMERGENCYAUTOROTATIONLANDING.2.1.Requiredactions2.1.1.Attheoperator'ssiteApplicationbeforethe31stofOctober2016.ApplyTlRef292720839tocheckmeshingvibrationlevelof41/23toothbevelgearofmoduleM01accordingtoparagraph2.3.Considerthevibrationcheckresults:refertoparagraph2.3.2.1.2.2.1.2.ByaMaintenanceCenterApplicationbeforethe31stofOctober2016.ApplyTlRef292720840tocheckmeshingvibrationlevelof41/23toothbevelgearofmoduleM01iftask71-02-15-760-801-A01oftherelevantARRIEL1MaintenanceManualisapplied:refertoparagraph2.3.2.2.EffectivityandcompliancetimesENGINE/VARIANTCODECONDITIONSOFAPPLICATIONFORENGINESINSERVICEARRIEL181-8Applicationbeforethe31stofOctober2016.ARRIEL1D-1D1ApplicationofthisMandatoryS8isconsideredmandatoryasaresultofatechnicalrequirementwhichmightaffectflightsafetyofenginesinservice.Itmaybedoneasdefinedbytheeffectivitycodegiveninthetableabove.Note1:ThisMandatoryS8doesnotapplyifacompleted41toothgearvibrationcheckisindicatedonthemoduleM01logcard:-ReferencetoServiceLetter(SL)No.2891/13/ARRIEL1,-OrreferencetoInternalDirective(CI)No.383952,-OrreferencetoAirworthinessDirective(AD)No.2014-0036-OrreferencetoRepairTechnicalInstruction(RTI)Ref.X292653272,-OrthelogcardisdatedafterJanuary31,2014,whichcorrespondstoupdateoftheacceptanceCCTincludingthesystematicvibratorycheckonbench.-OrifthisMandatoryS8wasapplied(allengineversions).-OrifthemoduleM01SerialNumberisgivenbelow.Note2:ThisMandatoryS8appliesataMaintenanceCenteriftask71-02-15-760-801-A01oftherelevantARRIEL1MaintenanceManualwasalreadyapplied:seeparagraph2.3.1.2listofmodulesM01thatarenotconcernedbythisMandatorySB(equivalenttofigure1,versionBofthisM dtSB)anaoryVariant5/NM01Variant5/NM01185910197071810910197581824010198081833110198781842110199311853010199851896310110000189871011007718417110112034Applicablevariants.ARRIEL1B-D-01§2-1/7SB292720839EN-C<June18,2014>-3I11SAFRANCJMANDATORYSERVICEBULLETIN2.3.1.2.ByaMaintenanceCenterIfbenchtestingaccordingtorelevantARRIEL1MaintenanceManual,task71-02-15-760-801-A01:2.3.1.2.1.ApplyTlRef292720840tocheckmeshingvibrationlevelof41/23toothbevelgearofmoduleM01.2.3.1.2.2.IdentifymoduleM01statusinthemoduleM01logcard:refertoparagraph2.3.4.2.2.3.2.OperatinginstructionsWARNING:FAILURETOAPPLYTHISMANDATORYSERVICEBULLETINMAYLEADTOANUNCOMMANDEDIN-FLIGHTENGINESHUT-DOWNWHICH,ONASINGLE-ENGINEHELICOPTER,MAYLEADTOANEMERGENCYAUTOROTATIONLANDING.2.3.2.1.Atthe operator'ssite(equivalenttoparagraph6.B.(1),inversionBofthisMandatorySB)2.3.2.1.1.ApplyTlRef292720839.2.3.2.1.2.ActionsaccordingtothevibrationcheckresultspecifiedintheemailsentbyTURBOMECAorinthereportgeneratedbytheB&Kserver:Level1-Greenindicator:keepmoduleM01inservice.Level2-Yellowindicator:removemoduleM01within150hoursor3months(whicheverisreachedfirst).Level3-Orangeindicator:removemoduleM01within25hours(orearlier,dependingontherecommendationsmadebyTURBOMECA)or3months(whicheverisreachedfirst).If"measureinvalid",contactyourTURBOMECArepresentative.2.3.2.1.3.SendanacknowledgementofreceiptbyemailorfaxtoyourNORIAcoordinator'D(refertoparagraph2.4.3)confirmingthatthestatusofmoduleM01hasbeentakenintoaccount.2.3.2.2.ByaMaintenanceCenterIfmaintenancetask71-02-15-760-801-A01oftherelevantARRIEL1MaintenanceManualisapplied:2.3.2.2.1.ApplyTlRef292720840.2.3.2.2.2.Actionsaccordingtothevibrationcheckresult:Compliantresult:releasemoduleMOlintoservice.>Non-compliantresult:returnmoduleMOltoaRepairCenter.2.3.3.Reconditioning and checksRefertorelevantARRIEL1MaintenanceManual,task05-50.2.3.4.Identification2.3.4.1.Attheoperator'ssite2.3.4.1.1.RecordtheapplicationofthisMandatorySBonthemoduleM01logcardindicatingthemeasurementlevelasfollows:"level1-green","level2-yellow"or"level3-orange",aswellasthemoduleM01TSNatthetimeofthemeasurement.2.3.4.1.2.Ifnecessary,notifyTURBOMECAthatstandardexchangeofmoduleM01hasbeenperformedbyreturningthefullycompletedcompliancecertificate(Appendix2.1).Applicablevanants:ARRIEL1B·D-01§2-3nSB292720839EN-C<June18,2014>-5I11SAFRANJrbornt><.MANDATORYSERVICEBULLETINTuRB0MEcAN0RIA2.5.ManpowerForAfrica,Europe,MiddleEastTeamTarnosServiceNORIA40220TARNOS-FranceFax:+33(0)559744572noria-tarnos-amel1@turbomeca.frTeamUKConcordeWaySegensworthNorth,FarehamHantsP0155RL-UnitedKingdomnoria-tmuk@turbomeca.co.ukTeamHamburgBorstelerChaussee4322453Hamburg-GermanyFax:+494050021661nona-hamburg@turbomeca.deForAustralasia,Oceania,JapanTeamSydney115WackettSt.BankstownAirportBankstown,NSW2200-AustraliaFax:+61297916708noria-s:idne:i@turbomeca.com.auForAsiaPacificTeamSingapore63LoyangWay,Singapore508753Fax:+6565454978noria.sinaaoore@turbomeca.comsa2.5.1.Attheoperator'ssiteForNorthandCentralAmericaTeamDallas2709ForumDriveGrandPrairie,TX75052-USAFax:+19726067668noria-dallas@turbomeca.comTeamCanada11800,rueHelen-BristolJ7N3G8QCMIRABEL-CanadaFax:+14504761449noria-mirabel@turbomeca.caTeamMexicoMontesUrales505Piso3ColoniaLomasdeChapultepec11000-MexicoOFnoria-mexico@turbomeca.commxForSouthAmericaTeamRioRuaCapitaoGuynemer,1626-XeremCEP:25250-130-DuquedeCaxias-RJ-BrasilFax:+552126792794noria-rio@turbomecacombr-Personnel:Onemechanicandonepersonqualifiedtoperformagroundruncheck.-Timerequired:4man-hours(applicationofTlRef292720839).2.5.2.ByamaintenanceCenter-Personnel:OneTURBOMECA-qualifiedtechnicianforthisoperation.-Timerequired:4man-hours(applicationofTlRef292720840).2.6.Toolingand/orproducts2.6.1.Attheoperator'ssite-Mechanic'sstandardtooling.-RefertoTlRef292720839.2.6.2.ByamaintenanceCenter-Mechanic'sstandardtooling.-RefertoTlRef292720840.2.7.WeightandbalanceNotapplicable.2.8.PublicationreferencesApplicablevariants:ARRIEL1B-0-01§2-517SB_292_72_0839_EN-C<June18,2014>-7I11.-,.SAFRANJrbomt'cMANDATORYSERVICEBULLETINObjet:AttestationderemplacementdumoduleM01.Subject:CompliancecertificateforreplacementofmoduleM01.ImportantIImportantnotice(NORIA):ApresapplicationdesinstructionsspecifieesdansceSBlmperatif,veuillezcompleterIapresenteattestationetIaretourneraupresdevotrecoordinateurNORIAlocalparcourrieroucourrieloufax:sereporterauparagraphe2.4.3.AfterapplicationoftheinstructionsspecifiedinthisMandatorySB,pleasecompletethiscertificateandreturnittoyourlocalNORIAcoordinatorbymailoremailorfax:refertoparagraph2.4.3.Informationconcernantlemateriel/EquipmentinformationUtilisateurCustomerN/5·SINMoteurEngineModuleM01deposeRemovedmoduleM01ModuleM01poseInstalledmoduleM01•TSN=TimeSinceNew(Heuresdepuisneuf)CSN=CyclesSinceNew(Cyclesdepuisneuf)Ref.-PINOperationeffectueeparIWorkperformedby:N°AppareilAircraftSINTSN*rso·CSN*TSO=TimeSinceOverhaul(HeuresdepuisRG)CSO=CyclesSinceOverhaul(CyclesdepUisRG)Jecertifiequelemoduleidentifieci-dessusaeteinstalleselonlesdirectivesdeceSBlmperatif.CSO*Icertifythattheabove-mentionedmodulehasbeeninstalledaccordingtothedirectivesgiveninthisMandatorySB.Date[JJIMMMM(enlettre)/AAAAou/orDD/MMMM(letter)IYYYY]Nom/NameANNEXE2.1/APPENDIX2.1Signature:ENDofsection§2FonctionIJobtitle"Applicationattheoperator'ssiteorbyaMaintenanceCenterqualifiedforlevel1,2"Applicablevariants:ARRIEL1B-D-01§2-717SB292720839EN-C<June18,2014>-9I11SAFRAN....__,;/TLJrbomE'C.MANDATORYSERVICEBULLETIN4.APPLICATIONATATURBOMECA-APPROVEDREPAIRCENTERNotapplicable.ENDofsection§4"ApplicationbyaTURBOMECA-approvedRepairCenter"Applicablevariants:ARRIEL1B-D-01§4-1/1SB292720839EN-C<June18,2014>-11I11