0SikorskyA UnitedTechnologiesCompanySikorskyAircraftCorporation6900MainStreetP.O.Box9729Stratford,Connecticut06615·9129(203)386·4000THISALERTSERVICEBULLETINISTHEPROPERTYOFSIKORSKYAIRCRAFTCORPORATIONANDISPROTECTEDUNDERTHECOPYRIGHTLAWSOFTHEUNITEDSTATESANDOTHERCOUNTRIES.THISALERTSERVICEBULLETINISDISTRIBUTEDONLYTOOWNERS/OPERATORSOFCOMMERCIALLY-CERTIFIEDSIKORSKYHELICOPTERSANDSIKORSKY-AUTHORIZEDLOGISTICANDSERVICECENTERSFORTHEPURPOSEOFFOSTERINGTHESAFEANDEFFICIENTOPERATIONOFSUCHHELICOPTERSANDUNDERTHEEXPRESSCONDITIONTHATTHECONTENTSOFTHISALERTSERVICEBULLETINARENOTTOBEDISCLOSED.REPRODUCED.ORDISTRIBUTED.INWHOLEORINPART,TOANYTHIRDPARTY.ORADAPTEDASADERIVATIVEWORK.WITHOUTTHEEXPRESSDOCUMENTEDCONSENTOFSIKORSKYAIRCRAFTCORPORATION.ANYACTINVIOLATIONOFAPPLICABLELAWMAYRESULTINCIVILAND/ORCRIMINALPENALTIES.LIMITEDDISTRIBUTIONeSIKORSKYAIRCRAFTCORPORATION1999ALLRIGHTSRESERVEDNo.61B35-69Subject:ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.1.PLANNINGINFORMATIONA.EffectivityModel:S-61L,N,NM(61454),andRseriestransportcategoryhelicopters.S-61A,D,E,andV seriesrestrictedcategoryhelicopters.AllH-3Militaryhelicopters.Component:S6135-20640-001,S6135-20640-002,andS6137-23040-001MRS.B.PurposeNOTE:ThisAlertServiceBulletin(ASB)61B35-69supersedesAlertServiceBulletinASB61B35-68B,initsentirety.ToestablishnewretirementlifeforMRSusedinRELandNon-RELoperations.ThenewretirementlifewillrequiretheoperatortotrackbothflighthoursandLiftCycles.NewMRStobeutilizedinRELoperations,aswellascurrentlyfieldedRELMRS,whicharepresentlyassignedaretirementlifeof2,000flighthours,willbeassignedanewretirementlifeof5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.NewMRStobeutilizedinNon-RELoperations,aswellascurrentlyfieldedNon-RELMRSwhicharepresentlyassignedaretirementlifeof42,000flighthours,willbeassignedtoanewretirementlifeof13,000flighthours.C.DescriptionHelicopterrecordsarereviewedtodeterminethecurrentlyassignedretirementtimesfortheMRS.Ifnecessary,calculationsaremadetodeterminethenumberofLiftCyclesaccumulatedontheMRS.Dispositioninstructionsareprovidedonhowtoimplementthesenewtimes.Appropriatelogcardentriesaremadetocomplywiththenewretirementtimes.April19/04Page1of18No.61B35-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.1.PLANNINGINFORMATION(Continued)D.ComplianceComplianceisessential.TheworkoutlinedhereinistobeaccomplishedwithinfivedaysfromtheissuedateofthisASB.E.ApprovalThetechnicalaspectsofthisAlertServiceBulletinareFAAapproved.F.Manpower(Estimated)PhysicallyidentifyRELcomponents:No.ofMen1No.ofHours1.0Man-Hours1.0NOTE:Doesnotincluderemovaltime,disassemblyandreassemblyofcomponentstobeidentified.G.MaterialNoneH.ToolingRequiredNoneI.ElectricalLoadDataNotaffectedJ.WeightandBalanceNoneApril19/04Page2No.61B35-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.1.PLANNINGINFORMATION(Continued)K.ReferencesServiceBulletinNo.61BGeneral-1,latestrevision,(TimeLimits,EstablishmentofSerializationofPartswithMandatoryRetirementTimes)ServiceBulletinNo.61B35-53,latestrevision,(MainGearBox,PlanetaryPlates,MatchedSet,Replacementof)ServiceBulletinNo.61B35-68,latestrevision,(MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations))CustomerServiceNoticeNo.6135-10,latestrevision,(MainGearBox,PlanetaryAssemblyandMainShaftAssembly,Improvementsto)FederalAviationAdministrationAirworthinessDirectiveAD98-26-02.L.PublicationsAffectedNone2.MATERIALINFORMATIONQTYA.ConsumableMaterialNoneWARNINGIOBSERVEALLCAUTIONSANDWARNINGSONCONTAINERSWHENUSINGCONSUMABLES.WHENAPPLICABLE,WEARNECESSARYPROTECTIVEGEARDURINGHANDLINGANDUSE.IFACONSUMABLEISFLAMMABLEOREXPLOSIVE,MAKECERTAINCONSUMABLEANDITSVAPORSAREKEPTAWAYFROMHEAT,SPARK,ANDFLAME.MAKECERTAINFIREFIGHTINGEQUIPMENTISREADILYAVAILABLEPRIORTOUSE.FORADDITIONALINFORMATIONONTOXICITY,FLASHPOINT,ANDFLAMMABILITYOFCHEMICALS,CONSULTYOURMEDICALPEOPLE,ORTHEMANUFACTUREROFTHECONSUMABLE.DESCRIPTIONACID-ETCHINGINKTYPENO.22OREQUIVALENT(ManufacturedbyMatthewsInternational,IdentificationSystemDiv.,1315W.LibertyAve.,Pittsburgh,PA15226)April19/04Page3No.61B35-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONSA.Determinethenew retirementlifeforeachMainRotorShaft(MRS)currentlyassignedaretirementlifeasnotedinaccomplishmentinstructionsinsection3.A.,(1),(2),(3),and(4)andillustratedinFlowchartA.•ForNon-RELMRSwhichdidnotpreviouslycomplywithASB61B35-68B,createalogcardfortheMRSandmakeanappropriatelogcardentryontheMRSandMGBlogcardstoindicatetheMRStotalaccumulatedflighthours.IfthetotaltimeontheMRScannotbedetermined,annotatethelogcardtoindicatetheMRShasatotaloperatingtimeof12,500flighthoursandaretirementlifeof42,000flighthours.Refertosection3.A.,(4).•ForMRSpreviouslyreworkedinaccordancewithOverhaulandRepairInstructions(ORI)No.6135-281,PartB,Step5orORI6137-041,SectionIll,OversizeDowelPinBoreRepairandidentifiedasTS-281orTS-041-3.Complyasstated:•ForanuninstalledMRSoraMRSthatisintheoverhaul/repaircycle,annotatethelogcardthattheMRSistoberetiredimmediately,regardlessofaccumulatedflighthours.•ForaninstalledMRSwithlessthanatotalof700flighthoursaccumulatedfromthereleaseddateofthisASB,annotatethelogcard(s)toindicatetheMRSistoberetired uponaccumulating700totalflighthours,oratthenextMGBoverhaul,orwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.•ForaninstalledMRSwithmorethanatotalof700flighthoursaccumulatedfromthereleasedateofthisASB,annotatethelogcard(s)toindicatethattheMRSistoberetiredwithin50flighthours,oratthenextMGBoverhaul,orwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.(1)MRScurrentlyassigneda535flighthourretirementlife,refertothefollowingandFlowchartB:(a)ForanuninstalledMRSoraMRSthatisintheoverhaul/repaircycle,annotatethelogcard(s)toindicatethattheMRSistoberetiredimmediately,regardlessofaccumulatedflighthours.(b)Foraninstalledshaft,annotatethelogcard(s)toindicatethattheMRSistoberetireduponaccumulating535totalflighthours,oratthenextMainGearBox(MGB)overhaul,orwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.(2)MRScurrentlyassigneda1,500flighthourretirementlife,refertothefollowingandFlowchartC:April19/04Page4No.61835-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)NOTE:AnexternalLiftCycleisdefinedastheaccomplishmentofanexternalloadlift,enroutetravel,approachtohover,releaseofloadandthenland,orreleaseofloadandthendepart.WhentheaveragenumberofLiftCyclesexceedssixperflighthour(greaterthansix)duringany250flight-hourperiod(greaterthansix)basedonaMovingAverage-calculatedatintervalsnottoexceed50hoursofoperation),thisisdefinedasRepetitiveExternalLift(REL)operation.OperationswhosemovingaverageLiftCyclesperhourissixorless(lessthansixorequaltosix)aredesignatedasNon-REL.(a)Annotatethelogcard(s)toindicateanewretirementlifeof1,500flighthoursor30,000LiftCycles,whicheveroccursfirst.NOTE:ThetotalnumberofaccumulatedLiftCyclescanbethesumofanyknownLiftCyclesandcalculatedLiftCycles.(b)DeterminethetotalnumberofaccumulatedLiftCyclesontheMRSsincenew.IfthetotalnumberofaccumulatedLiftCyclesontheMRSisknown,annotatethelogcard(s)withtheknownnumberofaccumulatedLiftCycles.IfthetotalnumberofactualLiftCyclesisnotknown,calculatethenumberofaccumulatedLiftCyclesbymultiplyingthenumberofaccumulatedflighthoursontheMRSby30.Forexample:Anewmainrotorshaftwasinitiallyoperatedfor500flighthourswiththeLiftCyclesbeingtrackedbytheoperatorandtheaccumulatedknownLiftCyclestotaled11,000.Thesameshaftwasthenoperatedfor800flighthourswithouttheLiftCyclesbeingtracked.TheoperatormustcalculatethenumberofaccumulatedLiftCyclesontheshaftduringthat800hoursofoperationbyassumingaLiftCyclerateof30/hour,(i.e.,800flighthoursmultipliedby30equals24,000calculatedLiftCycles).ThereforethetotalaccumulatedLiftCyclesonthisshaftwouldbe35,000(i.e.,11,000knownLiftCyclesplus24,000calculatedLiftCycles)andthelogcard(s)wouldbeannotatedtoshow35,000LiftCyclesasthetotalaccumulated.(c)IfthetotalnumberofLiftCyclesannotatedonthelogcard(s)exceeds30,000,complywiththefollowing:1ForanuninstalledMRSoraMRSthatisintheoverhaul/repaircycle,annotatethelogcard(s)toindicatethattheMRSistoberetiredimmediatelyregardlessofflighthoursaccumulated.2Foraninstalledshaft,annotatethelogcard(s)toindicatethattheMRSistoberetireduponaccumulating1,500flighthours,oratthenextMGBoverhaul,orwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.(d)IfthetotalnumberofLiftCyclesannotatedonthelogcard(s)islessthan30,000,complywiththefollowing:April19/04Page5rmiJITITUuJmNo.61835-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)1ContinuetrackingflighthoursandLiftCycles.RemoveMRSfromserviceuponaccumulating1,500flighthoursor30,000LiftCyclesoratnextMGBoverhaulorwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.(e)IftheMRShasaccumulatedlessthan1,500flighthoursand30,000LiftCycles,theMRScanbeassignedanewretirementlifeof5,000flighthoursor30,000LiftCyclesprovidedthattheMRSisinstalledinaMGBthathasincorporatedCSN6135-10,latestrevisionandSB61835-53,latestrevision.UponinstallingtheMRSinaMGBmodifiedbythereferencedCSNandSB,annotatethelogcard(s)toindicatethattheMRSistoberemovedfromserviceuponaccumulating5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.(3)MRScurrentlyassigneda2,000flighthourretirementlife(or2,200flighthoursassignedperAD98-26-02),refertothefollowingandFlowchartD:NOTE:AnexternalLiftCycleisdefinedastheaccomplishmentofanexternalloadlift,enroutetravel,approachtohover,releaseofloadandthenland,orreleaseofloadandthendepart.WhentheaveragenumberofLiftCyclesexceedssixperflighthour(greaterthansix)duringany250flight-hourperiod(basedonaMovingAverage-calculatedatintervalsnottoexceed50hoursofoperation),thisisdefinedasRepetitiveExternalLift(REL)operation.OperationswhosemovingaverageLiftCyclesperhourissixorless(lessthansixorequaltosix)aredesignatedasNon-REL.(a)Annotatethelogcard(s)toindicateanewretirementlifeof5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.(b)DeterminethetotalnumberofaccumulatedLiftCyclesontheMRSsincenew.IfthetotalnumberofaccumulatedLiftCyclesontheMRSisknown,annotatethelogcard(s)withtheknownnumberofaccumulatedLiftCycles.IfthetotalnumberofLiftCyclesisnotknown,calculatethenumberofaccumulatedLiftCyclesbymultiplyingthenumberofflighthoursaccumulatedontheMRSby30.Forexample:Anewmainrotorshaftwasinitiallyoperatedfor500flighthourswiththeLiftCyclesbeingtrackedbytheoperatorandtheaccumulatedknownLiftCyclestotaled11,000.Thesameshaftwasthenoperatedfor800flighthourswithouttheLiftCyclesbeingtracked.TheoperatormustcalculatethenumberofaccumulatedLiftCyclesontheshaftduringthat800hoursofoperationbyassumingaLiftCyclerateof30/hour,(i.e.,800flighthoursmultipliedby30equals24,000calculatedLiftCycles).ThereforethetotalaccumulatedLiftCyclesonthisshaftwouldbe35,000(i.e.,11,000knownLiftCyclesplus24,000calculatedLiftCycles)andthelogcard(s)wouldbeannotatedtoshow35,000LiftCyclesasthetotalaccumulated.(c)IfthetotalnumberofLiftCyclesannotatedonthelogcard(s)exceeds30,000,complywiththefollowing:April19/04Page6mrnmrrauJrnNo.61835-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)1ForanuninstalledMRSoraMRSthatisintheoverhaul/repaircycle,annotatethelogcard(s)toindicatethattheMRSistoberetiredimmediatelyregardlessofflighthoursaccumulated.2Foraninstalledshaft:aIftheaccumulatedLiftCyclesexceeds30,000butislessthan57,000LiftCycles,annotatethelogcard(s)toindicatethattheMRSistoberetireduponaccumulating5,000flighthoursor57,000LiftCycles,oratthenextMGBoverhaul,orwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.bIftheaccumulatedLiftCyclesexceeds57,000,annotatethelogcard(s)toindicatethattheMRSistoberetiredwithin50flighthoursoratthenextMGBoverhaulorwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.(d)IfthetotalnumberofLiftCyclesannotatedonthelogcard(s)islessthan30,000,complywiththefollowing:1ContinuetrackingflighthoursandLiftCyclesandretireMRSfromserviceuponaccumulating5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.(4)MRScurrentlyassigneda42,000flighthourretirementlife,refertothefollowingandFlowchartE:April19/04NOTE:AnexternalLiftCycleisdefinedastheaccomplishmentofanexternalloadlift,enroutetravel,approachtohover,releaseofloadandthenland,orreleaseofloadandthendepart.WhentheaveragenumberofLiftCyclesexceedssixperflighthour(greaterthansix)duringany250flight-hourperiod(basedonaMovingAverage-calculatedatintervalsnottoexceed50hoursofoperation),this isdefinedasRepetitiveExternalLift(REL)operation.OperationswhosemovingaverageLiftCyclesperhourissixorless(lessthansixorequaltosix)aredesignatedasNon-REL.(a)Annotatethelogcard(s)toindicateanewretirementlifeof13,000flighthours.1ForMRSwhichwerepreviouslyassignedatotaloperatingflighttimepenaltyof12,500flighthoursandaretirementlife.of42,000flighthoursinaccordancewithASB61835-68,complywiththefollowing:Subtract8,500flighthoursfromtheexistingflighthoursaccumulatedontheMRSandannotatethelogcard(s)withthenewflighthourtotal.ContinuetrackingflighthoursandLiftCyclesandretiretheMRSfromserviceuponaccumulatingatotalof13,000flighthours.Page7mrnJ[ITauJrnNo.61835-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)2ForMRSwhichwerenotpreviouslyassignedatotaloperatingflighttimepenaltyof12,500flighthoursbutwereassignedaretirementlifeof42,000flighthoursperASS61835-68,complywiththefollowing:aContinuetrackingflighthoursandLiftCyclesandretiretheMRSfromserviceuponaccumulatingatotalof13,000flighthours.(b)Ifthetotalnumberofaccumulatedflighthoursannotatedonthelogcard(s)exceeds13,000flighthours,complywiththefollowing:1ForanuninstalledMRSoraMRSthatisintheoverhaul/repaircycle,annotatethelogcard(s)toindicatethattheMRSistoberetiredimmediately.2ForaninstalledMRS,annotatethelogcard(s)toindicatethattheMRSistoberetiredatnextMGBoverhaulorwithinsixcalendarmonthsfromtheissuedateofthisASS,whicheveroccursfirst.(c)Ifthetotalnumberofaccumulatedflighthoursannotatedonthelogcard(s)islessthan13,000flighthours,complywiththefollowing:1ContinuetrackingflighthoursandLiftCyclesandretiretheMRSfromserviceuponaccumulatingatotalof13,000flighthours.(d)Non-RELoperatorsarerequiredtotrackLiftCyclesonanon-goingbasistoverifycontinuedNon-RELoperationanddesignation.WhentheaveragenumberofLiftCyclesexceedssixperflighthour(greaterthansix)duringany250flight-hourperiod(basedonaMovingAverage-calculatedatintervalsnottoexceed50hoursofoperation),thisisdefinedasRepetitiveExternalLift(REL)operation.OperationswhosemovingaverageLiftCyclesperhourissixorless(lessthansixorequaltosix)aredesignatedasNon-REL.B.ForahelicopterwhichtransitionsfromNon-RELtoRELoperationasaresultoftheaccomplishmentofthemovingaverageprocedure,refertothefollowingandFlowchartF:NOTE:AnexternalLiftCycleisdefinedastheaccomplishmentofanexternalloadlift,enroutetravel,approachtohover,releaseofloadandthenland,orreleaseofloadandthendepart.WhentheaveragenumberofLiftCyclesexceedssixperflighthour(greaterthansix)duringany250flight-hourperiod(basedonaMovingAverage-calculatedatintervalsnottoexceed50hoursofoperation),thisisdefinedasRepetitiveExternalLift(REL)operation.OperationswhosemovingaverageLiftCyclesperhourissixorless(lessthansixorequaltosix)aredesignatedasNon-REL.(1)AnnotatetheMGBandMRSlogcard(s)toindicateanewMRSretirementlifeof5,000flighthoursor30,000LiftCycles,occursfirst.April19/04Page8rrmiJITITauJmNo.61835-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL}Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)(2)DeterminethetotalnumberofaccumulatedLiftCyclesontheMRSsincenew.IfthetotalnumberofaccumulatedLiftCyclesontheMRSisknown,annotatethelogcard(s)withtheknownnumberofLiftCycles.IfthetotalnumberofLiftCyclesisnotknown,calculatethenumberofaccumulatedLiftCyclesbymultiplyingthenumberofflighthoursaccumulatedontheMRSbysix.Forexample:Ifashaftisinitiallyoperatedfor1,000flighthourswithouttheLiftCyclesbeingtracked,multiply1,000flighthoursbysix.ThetotalcalculatedLiftCyclesof6,000wouldthenbeannotatedonthelogcard(s).(3)IfthetotalnumberofaccumulatedflighthoursandLiftCyclesarelessthan5,000and30,000respectively,complywiththefollowing:(a)IftheMRSisinstalledinaMGBthathasnotincorporatedCSN6135-10,latestrevisionandSB61835-53,latestrevision,withintenflighthoursfollowingthetransitiontoRELoperation,theMGBmustbemodifiedtocomplywiththeCSNandSBpriortocontinuedoperation.ContinuetrackingflighthoursandLiftCyclesandretireMRSfromserviceuponaccumulating5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.(b)IftheMRSisinstalledinaMGBthathasincorporatedCSN6135-10,latestrevisionandSB61835-53,latestrevision,continuetrackingflighthoursandLiftCyclesandretireMRSfromserviceuponaccumulating5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.(4)IftheaccumulatedflighthoursorLiftCyclesexceed5,000or30,000respectively,complywiththefollowing:(a)ForanuninstalledMRSoraMRSthatisintheoverhaul/repaircycle,annotatethelogcard(s)toindicatethattheMRSistoberetiredimmediately.(b)ForaninstalledMRS,complywiththefollowing:1Ifthetotalnumberofaccumulatedflighthoursexceeds5,000,regardlessofthenumberofLiftCycles,annotatethelogcardtoindicatethattheMRSmustberetiredfromservicewithintenflighthoursoratthenextMGBoverhaulorwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.2IfthetotalnumberofaccumulatedLiftCyclesexceeds30,000,complywiththefollowing:aIftheMRSisinstalledinaMGBthathasincorporatedCSN6135-10,latestrevisionandSB61835-53,latestrevisionandtheLiftCyclesexceed30,000butarelessthan57,000LiftCycles,annotatethelogcard(s)toindicatethattheMRSistoberetireduponaccumulating5,000flighthoursor57,000LiftCycles,oratthenextMGBoverhaul,orwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.April19/04Page 9mmiTITauJmNo.61835-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)bIftheMRSisinstalledinaMGBthathasincorporatedCSN6135-10,latestrevisionandSB61B35-53,latestrevisionandtheLiftCyclesexceed57,000,annotatethelogcard(s)toindicatethattheMRSistoberetiredwithin50flighthoursoratthenextMGBoverhaulorwithinsixmonthsfromtheissuedateofthisASB,whicheveroccursfirst.cIftheMRSisinstalledinaMGBthathasnotincorporatedCSN6135-10,latestrevisionandSB61B35-53,latestrevision,annotatethelogcardtoindicatethattheMRSmustberetiredfromservicewithintenflighthoursoratthenextMGBoverhaulorwithinsixcalendarmonthsfromtheissuedateofthisASB,whicheveroccursfirst.(5)Non-RELshaftsintheoverhaul/repaircyclewhicharetobeutilizedinRELservicemustbeinstalledinaMGBthathasbeenmodifiedtocomplywithCSN6135-10,latestrevisionandSB61B35-53,latestrevisionpriortoentryintoRELoperation.C.MRSutilizedinRELoperationsaretobeidentifiedasfollows:WARNINGIWARNINGRELDESIGNATEDCOMPONENTS,WHETHERONHELICOPTERSENGAGEDINRELORNON-RELOPERATIONS,ARESUBJECTTORELCOMPONENTOVERHAULINTERVALSANDRETIREMENTTIMESFORTHEREMAINDEROFTHEIRSERVICELIFE.TRANSITIONFROMTHENON-RELTORELCATEGORYREQUIRESIMMEDIATERECLASSIFICATIONTORELANDOBSERVINGREL.RETIREMENTTIMESANDTBO'SASSOONASTHETRANSITIONOCCURS.NOTE:TheidentificationlettersRELindicatethecomponentsareusedinRepetitiveExternalLiftoperations.(1)Usingacidetchmethod,acidetchtheidentificationlettersRELontheOutsideDiameter(inanareanearcomponentserialnumber)oftheMRSflangeasfollows.RefertoFigure1.NOTE:Airgritmarkingmaybeusedasanalternateforacidetching.(2)Applyetchingink,No.22,orequivalent,withtoothpickorsimilarimplement.Maximumdepthshallnotexceed0.001inch.(3)Neutralizesurfaceafteretchandapplyoiltopreventcorrosion.April19/04Page10No.61B35-69ROTORS-MainGearBox-MainRotorShaft-EstablishmentofNewRetirementTimeforMainRotorShafts(MRS)usedinRepetitiveExternalLift(REL)andNon-RepetitiveExternalLift(Non-REL)Operations.3.ACCOMPLISHMENTINSTRUCTIONS(Continued)D.RecordofCompliance(1)Makeanappropriatelogbook/logcardentrytoshowcompliancewiththisAlertServiceBulletin.(2)UponcompliancewiththisAlertServiceBulletin,completeattachedALERTSERVICEBULLETINCOMPLIANCERECORDCARDandreturnittoSikorskyAircraft.April19/04Page11WithinfivedaysfromtheissuedateofthisASB.comply withthefollowingforeachMainRotorShaft(MRS)IstheMRSRetirementLifecurrently535flighthours?YesProceedtoFlowchartBAccomplishmentInstructions3.A.(1).April19/04NoNo.61835-69FlowchartAAccomplishmentInstruction3.AIstheMRSRetirementLifecurrently1,500flighthours?YesProceedtoFlowchartCAccomplishmentInstructions3.A.(2).No·Note:2,200flighthoursassignedinaccordancewithFAAAD98-26-02IstheMRSRetirementLifecurrently2,000(2,200)'flighthours?YesProceedtoFlowchart0AccomplishmentInstructions3A(3).NoPage12IstheMRSRetirementLifecurrently42,000flighthours?YesProceedtoFlowchartEAccomplishmentInstructions3.A.(4).TD1245April

19/04

**ffi[~mu ~~m~~rn~**  **mmrrrr~uJm** No.

61 835-69 Flowchart

B Accomplishment

Instruction

3.A.(1) 535

flig

ht

h ou

r Ma

i n Rotor

Shaft (MRS) Retirement Life. Is the MRS uninstalled

or

in the OverhauVRepair Cycle? Yes Annotate

Log Card(s)

t o

R eti

r e MRS

i mmediately.

No

Annotate

Log Card(s)

to retire

MRS

at 535 flight hours

or next MGB overhaul

or within >----

- -+1

six calendar

months

from

the issue

date

of the ASB, whichever

occurs

first. Page

13

TD1246**ffi[~rnu ~~m~~rn~**  **mmiTIT~uJrn** No.

61 835-69 Flowchart

C Accomplishment

Instruct

ion 3.A.(2

) t.500

floght

hour Main

Rotor

Shaft (MRS) Retirement Life. Annolale

L og Card(s)

to

in

d

i cate

a new retirement

life

of t.500

flight

hours

or 30.000

Lift Cycles

. whichever

occurs f irs

t.

No

• Note: Calculate

the number

of Lift Cycles accumulated

by multiplying

30

X the number

of Hight hours

on the MRS.

•

Total accumulated

number

of Lift Cycles

can

be

the sum

of known

Lift Cycles

and calculated

Li

ft Cycles April

19/04 Annotate

Log Card(s)

with

total accumulated

Lift Cycles.

No

Continue

tracking

llight hours

and

Lift Cyc

le

s. Remove

the MRS

upon accumulating

t ,SOO hours

or 30,000

Lift Cycles,

or next MGB

ove rhaul

or with

i n

s ix c alendar

mont

hs

f

r om

the

i ssue

date

of this ASB

. whic

h ever occurs

f irst. No

Annotate

Log Card(s)

to retire

MRS

a

t

t

, 500 flight hours,

or next

MGB overt1aul

or Within >------+!

six calendar

months

f rom

the

I ssue

date

of this ASB

. whichever

occurs

first. Page

14

If the MRS

has accumulated

less

than t,SOO

fli ght hours

and

h as not accumu

lated 30,000 Lift Cycles,

the MRS

can be assigned

a new ret

ir ement

life

of

5

, 000 flight

hours

or 30,000

Li

ft Cyc

l es

p

r ov ided

that

it

i s Ins

t a

ll ed

In

a MGB

t h at has

In co rporated CSN

6

1 35-10

and SB

6t 835·53. Annotate

Log Card(s

) to rebre

MRS

at 5,000

flight hours

or

30

, 000

Lift Cycles, whichever

occurs first.

TD12472.000 (2.200)

.. flight

hoor

Main Rotor

Shaft (MRS) Retirement

**L~e.**

**ffi[~[ffff ~~rnw~~~**  rnm[ITuuJm No. 61835-69 Flowchart

D Accomplishment

Instruction

3.A.

( 3) Annotate

t h

e Log Card(s)

to ind

i ca

t e

a ne

w ret

i reme

nt

lif

e

o

f

5

, 000 flight

h

o

u rs or 30,000

Llfl

Cyc

l es,

w

hi

c

h ever occurs April

19/04

firs

t. Yos Yes Annotate

Log Card(s)

to Retire MRS Immediately.

· Note: Calculate

the number

of Lift Cydes accumulated

by mu

l tiplying

30

X the number

of flight hoors

on the MRS.

•

Total accumulated

number

of Lift Cydes

can

be the sum

of known

Ufl Cydes

and calculated

Lift Cydes

. Continue

t

r acking

flight hoors

and **.>-- ----** 

**--**

**~**

Lift Cyc

l es and retire

the MRS

at 5,000

fl

i ght hours

or 30,000

Lift Cyc

l es

, whic

h ever occurs

fi rst. Does

the total number

of accumulat **L~t**

Cyc

l es

on

the MRSexceeed

57

, 0007 Yes Annotate

Log Card(s)

to retue

MRS WJ!hm

the neXI

50 friQht hours

. or next

MGB overt\aul

or with

i n six calendar

months

from

the

i ssue

date of this ASS

, whichever

occurs

first. Page

15

.. Note: 2.200

flight hoors assigned in accordance

with

F M AD 98-26-02

. Annotate

Log Card(s)

to retire

MRS

at

5 000 flight hours

or

57

, 000

Lift Cydes

or next MGB overhaul

, or within

six calendar

months

f

r om

the issue

date

of this ASS, whichever

occurs

first.

TD1248

# ffi

**[~ rnu**  **~~rnw~rn~**



# mmiTITUu

J m 42,000

flight

hour Main

Rotor

Shaft (M RS

) Retirement Life. Annotate

the

Log Card(s)

to I nd

i ca

t e

a new

reti

r e m

e

n

t

l

i fe or 

# 13,000

fligh

t

h

o urs.



# No AMotate

Log Card(s)

by substracting 

# 8.500

flight



# hours

from

the 

# current MRS accumulated

flight hours.



# No



# No.

61 835

- 69 

# Flowchart

E Accomplishment

Instruction

3.A

. (4) Perform

Moving Average Continue

track

ing flight hours

and

Procedure



# every



# 50 flight

hours

. If **-- ---~** 



# Uft Cycles

and retire

the MRS

a

t **1---**

**~** 

# average

n

u m ber

of 

# Lift Cycles 

# Apri

l 19/04

Yes 

# Armot.ate

Log Card(s)

to Rebre MRS immediately.



# No

13.000

h ours

.

exceed

s

i x

. perform Accomp

li shmen

t Instruction



# 3

. 8. Annotate

Log Card(s)

to

r etire

MRS

at next MGB overhaul

or within

six

ca

le ndar months from

the Issue

date

of th1s ASB

. 

# whichever occurs

first. 

# Page

16

TD1249No.61835-69FlowchartFAccomplishmentInstruction3.8AnnotateMG8andMRSLogCard(s)toindicatenewretirementlifeof5,000flighthoursor30,000LiftCycles,whicheveroccursfirst.DoesthetotalCalculatethenumberofLiftCyclesaccumulatedbymultiplyingsixXthonumberofHighthoursontheMRS.•·Note:TotalaccumulatednumberofLiftCyclescanbethesumofknownLiftCyclesandcalculatedLiftCycles.numberNoIstheMRSNoWithintenflightHoursmodifytheMG8byincorporatingCSN6135-10andS861835-53priortoofaccumulatedflighthoursorLiftCyclesexceed5.000flighthoursorApril19/0430,000LiltCycles?YesAnnotateLogCard(s)toRetireMRSimmediately.installedinaMG8modifiedbyCSN6135·10andS861835·53?continuedoperation.YesContinuetrackingflighthoursandLiftCyclesandretiretheMRSat5,00()flighthoursor30,000LiftCycles.whicheveroccursfirst.NoIstheMRSNoYesAnnotateLogCard(s)toretireMRSwithintenHighthours,ornextMG8overhaulorwithinsixcalendarmonthsfromtheIssuedateofthisAS8,whicheveroccursfirst.installedinaMG8modifiedbyCSN6135-10andS861835-53?NoAnnotateLogCard(s)toretireMRSwithintonflighthours,ornextMGoverhaulorwithinsixcalendarmonthsfromtheissuedateofthisAS8,whicheveroccursfirst.AnnotateLogCard(s)toretireMRSuponaccumulating5,000flighthoursor57,000LiftCyclesornextMG8overhaul,orwithinsixcalendarmonthsfromtheissuedateofthisAS8,whicheveroccursfirst.AnnotateLogCard(s)toretireMRSwithin50flighthours,ornextMG8overhaulorwithin sixcalendarmonthsfromthe•ssuedateofthisAS8,Whicheveroccursfirst.Page17TD1250

# April

19/04



# ffi[~rnu **~~m~~rn~**



# mmiTrrau

J m ...1 

# w 

# a: 

# -

No

. 61835-69 

# D MAIN ROTOR

SHAFT FIGURE

1

. Page

18

101256



# ...

# (Fold

over

and tape closed) 

# SIKORSKY

AIRCRAFT CORPORATION 

# FACSIMILE

NUMBER

(860) 998-7556 ATTENTION:

DIRECTOR COMMERCIAL

CUSTOMER

SERVICE 

# '1111111111111111111, ' 

# ~ IMPORTANT

NOTICE



# ~

, Upo

n COMPLIANCE

with

the attached



# ASB. Sikorsk-y

requests

your cooperation

in 

# comp

l eti

n

g and returning

by mail

or 

# FAX

thi

s 

# ENTIRE

PAGE.



# , ' '

Pl ease

fill

in the requested information

at the bottom

of the page,

so we may maintain

proper

, records documenting

the configuration

of your aircraft.

This information

is useful

when determining configuration

and effectivity

of issues affecting

fielded

aircraft. This request

is

in keeping

with

our policy

to assure

that

our customers

r eceive

the latest '

information

applicable

for

the maint enance

of your aircraft.

Thank

you. 

# ALERT SERVICE BULLETIN:

No 61835-69



# Com plianc

e Record

Card



# , , ' TITLE:

**_...:R..:.:**

**::..T.:..:O:::.:R..:.:**

**=-- ..:.M:.::a::.:.:in~G::.:::e;.:::.a:....r** 

.:B.:::;ox:.:__

- 

# ..:.:M:.:.::a:.:.:.

**.:....:..:R~**

**::::: .:..r**  **S:.:..:h::aft~- ..::E:.::s.:.::ta:.:::b:.::lis::.:..:h~m:::::e~nt:....o::::.:f~N:..:;e:::.:w:.:__** 

____

, 

# '

Retirement

Time

for Main

Rotor

Shafts

(MRS)

used

in Repetitive __ E_x_te_r_na_I

_L_ ift___:_(R

_E_

L..:..)

_ a _ n _ d

_ N _ o _ n _ -R_e..:..p_et_it_iv_e_E_x_te_rn_a_I_L_ift__:_(N_o_n_-R_E_L.:...)

-------

, **OWNER/O~waR:** 

# __________________

_ SUBMITTED

BY:

. _________

__ DATE ______

_



# , ' FOLLOWING

SERIAL NUMBERS

ARE

NOT AFFECTED

BY THIS

ASB '

ASB

HAS

B EEN COMPLIED

WITH

ON THE FOLLOWING

SERIAL NUMBERS

, 

# '



# , '

I

I

I

I

I

I

I

I

I

I

II IIIII' ________

(Fold

Up

to Arrows) 

# SA 7673-2

Rev

B



# IFIRST-CLASSMAILPERMITNO.432BRIDGEPORTCTPOSTAGEWILLBEPAIDBYADDRESSEESIKORSKYAIRCRAFTCORPORATIONP.O.BOX97296900MAINSTREETSTRATFORD,CONNECTICUT06615-9129U.S.A.ATTENTION:DIRECTORCOMMERCIALCUSTOMERSERVICEWORLDWIDECUSTOMERSERVICEPleasecompletetheformonthereversesideandFAXtoFACSIMILENUMBER(860)998-7556orfoldandreturnENTIREformtoSikorskyAircraftCorporationNoPostageNecessary