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HARTZELL PROPELLER INC.

SERVICE BULLETINTRANSMITTAL SHEET

HC-SB-61-227Propeller - Hub Inspection

August 27, 2012

This page transmits a revision to Service Bulletin HC-SB-61-227.

•OriginalIssue,datedJan16/98 •Revision1,datedMay18/99 •Revision2,datedMay8/00 •Revision3,datedApr18/05 •Revision4,datedOct04/05 •Revision5,datedSep28/06 •Revision6,datedAug27/12

PropellerassembliesthathavepreviouslycompliedwiththeterminatingactionspecifiedinapreviousversionofthisServiceBulletinarenotaffected.

PropellerassembliesthathavenotpreviouslycompliedwiththeterminatingactionspecifiedinapreviousversionofthisServiceBulletinareaffected.

FAAapprovalhasbeenobtainedontechnicaldatainthispublicationthataffectstypedesign.

Changesareshownbyachangebarintheleftmarginoftherevisedpages.

ThisrevisionisissuedtochangethefollowingintheServiceBulletin:

- AddsanoptionalTerminatingActionforconversionofhubswithoutan"A"or"B"serialnumbersuffixtoanoil-filledconfiguration

- Revisesthedocumenttolatestcautionandformatrequirements

ThisServiceBulletinisreissuedinitsentirety.


SERVICE BULLETINTRANSMITTAL SHEET

HC-SB-61-227Propeller - Hub Inspection

(Thispageisintentionallyblank.)


SERVICE BULLETINHC-SB-61-227

Propeller - Hub Inspection

Jan16/98 HC-SB-61-227Revision6,datedAug27/12 Page1of20

1. PlanningInformation

A. Effectivity

CAUTION: DONOTUSEOBSOLETEOROUTDATEDINFORMATION.PERFORMALLINSPECTIONSORWORKINACCORDANCEWITHTHEMOSTRECENTREVISIONOFTHISSERVICEBULLETIN.INFORMATIONCONTAINEDINTHISSERVICEBULLETINMAYBESIGNIFICANTLYCHANGEDFROMEARLIERREVISIONS.FAILURETOCOMPLYWITHTHISSERVICEBULLETINORTHEUSEOFOBSOLETEINFORMATIONMAYCREATEANUNSAFECONDITIONTHATMAYRESULTINDEATH,SERIOUSBODILYINJURY,AND/ORSUBSTANTIALPROPERTYDAMAGE.REFERTOTHESERVICEBULLETININDEXFORTHEMOSTRECENTREVISIONLEVELOFTHISSERVICEBULLETIN.

(1) Hartzelltwoblade,aluminumhub,"compact"()HC-()2Y()-()seriespropellersmanufacturedbeforeApril1997andhavenosuffixletter,orhavean"A"or"E"suffixletterattheendofthehubandpropellerserialnumberandinstalledonthefollowingapplicationsareaffectedbythisServiceBulletin.

(a) Aerobaticaircraft(includingcertificatedaerobaticaircraft,militarytrainers,oranyaircraftroutinelyexposedtoaerobaticusage)

(b) Agriculturalaircraft

(c) PiperPA-32()seriesaircraftwithLycoming540seriesenginesratedat300HPorhigher

(d) BrittenNormanBN-2()seriesaircraftwithLycoming540seriesengines

NOTE1: Thesepropellersareinstalledon,butnotlimitedto,theaircraftapplicationslistedinTable2.

NOTE2: TheparenthesisshowninthemodeldesignationsthroughoutthisServiceBulletinindicateletter(s)ornumber(s)thatmayormaynotbepresentbecauseofdifferentconfigurationspermittedonthevariousaircraftinstallations.Definitionofpropellermodeldesignationsandfurtherdetailsofletter(s)ornumber(s)thatmaybepresentareshowninFigure1.

©1998,1999,2000,2005,2006,2012-HartzellPropellerInc.-Allrightsreserved





NOTE3: PropellersmanufacturedafterApril1997haveasuffixletter"B"attheendofthehubandpropellerserialnumbers.Hubserialnumberswithoutsuffixletter"A"or"B"weremanufacturedbefore1991andcanbeidentifiedbytwodifferentstylesofthefilletradiusasshowninFigure2."A"suffixserialnumberhubscanbeidentifiedbythefilletradiusshowninFigure2.ThesehubshavebeenproducedfromDecember1991throughApril1997.Additional"A"suffixhubserialnumbersareshowninTable1.ThesehubshavebeenmodifiedanddifferslightlyinappearancefromthoseshowninFigure2."B"suffixserialnumberhubsareidentifiedbythelackofafilletradiusatthebladesocketshowninFigure2.ThesehubsarecurrentproductionmadesinceApril1997.The"E"suffixletterisaddedtothehubserialnumbertoindicatethattheinitialeddycurrentinspectionhasbeenperformedandarepetitiveeddycurrentinspectionisrequired.

(2) Propellerswithasuffixletter"B"attheendofthehubandpropellerserialnumberarenotaffectedbythisServiceBulletin.

(3) ApplicationsthathaveNOTpreviouslycompliedwiththeterminatingactioninapreviousrevisionofthisServiceBulletinorwiththeterminatingactioninFAAAirworthinessDirective2001-23-08AREaffectedbythisServiceBulletin.

(4) ApplicationsthathavepreviouslycompliedwiththeterminatingactioninapreviousrevisionofthisServiceBulletinorwiththeterminatingactioninFAAAirworthinessDirective2001-23-08areNOTaffectedbythisServiceBulletin.

B. ConcurrentRequirements

(1) Installationofa"B"serialnumbersuffixhubwillrequirespinnerbulkheadmodificationorreplacementinaccordancewiththeRepair/ModificationchapterofHartzellSpinnerAssemblyMaintenanceManual127(61-16-27).

(a) Applicationswithnon-HartzellspinnerassembliesshouldcontacttheapplicableTypeCertificateholderforreworkinstructions.

(2) Additionalservicedocumentsmayapplytothecomponents/propellersaffectedbythisServiceBulletin.CompliancewithadditionalservicedocumentsmaybenecessaryinconjunctionwiththecompletionoftheAccomplishmentInstructionsinthisServiceBulletin.RefertotheHartzellPropellerwebsiteatwww.hartzellprop.comforacross-referenceofservicedocuments.





Model Designations for Aluminum Hub, Reciprocating Engine PropellersFigure 1

FLANGE DISTANCE FROM HUB DESIGNATION PARTING LINE TO FLANGE FACEC - STANDARDHUB D,F 3.250IN(82.55MM) K,R,L 4.187IN(106.34MM) N 3.375IN(85.72MM)E - EXTENDEDHUB F 7.250IN(184.15MM) K,R,L 9.187IN(233.34MM) N 8.375IN(212.73MM)F - EXTENDEDHUB R,L 7.187IN(182.55MM)G - EXTENDEDHUB F 4.250IN(107.95MM)H- EXTENDEDHUB F,N 7.500IN(190.50MM)I- EXTENDEDHUB R 6.187IN(157.15MM) F 5.250IN(133.35MM)J - EXTENDEDHUB F 6.500IN(165.10MM)L- EXTENDEDHUB F 3.750IN(95.25MM)M- EXTENDEDHUB R,L 6.750IN(171.45MM)

BASIC DESIGN CHARACTERISTIC

DOWEL LOCATION

withrespectto#1blade,viewedclockwisefacingpropellerflange:BLANK -90AND270DEGREES-CONTINENTAL, 0AND180DEGREES-LYCOMING B- 30AND210DEGREES-CONTINENTAL,FRANKLINANDPORSCHE C- 150AND330DEGREES-CONTINENTALANDLYCOMING D- 60AND240DEGREES-CONTINENTAL E- 0AND180DEGREESANDPROPELLERLABELALIGNEDWITHENGINETCMARKS- CONTINENTAL P- 0AND180DEGREESANDPROPELLERLABELALIGNEDWITHENGINETCMARKS- CONTINENTAL

B HC - C 2 Y F - 1 BF

NO. OF BLADES

HUB MOUNTINGFLANGE

BLADE SHANK TYPE(ALUMINUM BLADES) ORBLADE RETENTION SYSTEM(COMPOSITE BLADES)

"Y"SHANKRETENTIONSYSTEM,ALUMINUMBLADE,INTEGRALPITCHCHANGEARM

"Y"SHANKRETENTIONSYSTEM,COMPOSITEBLADE,INTEGRALORBOLTONPITCHCHANGEARM

BOLT DOWELS NO. OF BOLTS TYPICAL ENGINE CIRCLE - inch NO. DIAMETER OR STUDS F 4.00 2 1/2 6(1/2inch) CONTINENTALK 4.75 2 3/4 6(1/2inch) LYCOMING360/540L 4.75 2 5/8 6(7/16inch) LYCOMING290/320N 4.25 2 1/2 8(9/16inch) GTSI0520 R 4.75 2 3/4 6(1/2inch) LYCOMINGD 4.00 0 1/2 8(1/2inch) CONTINENTALGTSIO-520

HC HARTZELLCONTROLLABLE





"Filletradius"onhubsmadebetween1983and1991.Serialnumberhasnosuffixletter.

Hub IdentificationFigure 2

LeftsideofhubfromNo.1bladePropeller serial number

RightsideofhubfromNo.1bladeHub serial number

HubsmadeDecember1991thruApril1997,havethesuffix"A"intheserialnumber(Seeadditional"A"suffixhubsinTable1)

Currenthubdesign,hasthesuffix"B"intheserialnumberandisnotaffectedbythisServiceBulletin,"filletradius"notpresenton"B"serialnumbersuffixhubs

SerNo.CH12345A

SerNo.CH12345A

A12345AA12345A

"Filletradius"onhubsmadebefore1983.Serialnumberhasnosuffixletter.

A12345AA12345A

Locationoflubricationfittingsafter1983

Locationoflubricationfittingsbefore1983

A12345AA12345A

BladeNumber1





C. Reason

WARNING: UNUSUALORABNORMALGREASELEAKAGEORVIBRATION,WHERETHECONDITIONINITIATEDSUDDENLY,CANBEANINDICATIONOFAFAILINGPROPELLERBLADEORBLADERETENTIONCOMPONENT.ANINFLIGHTBLADESEPARATIONMAYRESULTINDEATH,SERIOUSBODILYINJURY,AND/ORSUBSTANTIALPROPERTYDAMAGE.UNUSUALORABNORMALGREASELEAKAGEORVIBRATIONDEMANDSIMMEDIATEINSPECTIONFORPOSSIBLECRACKEDHUB(FORFURTHERINFORMATIONONTHISSUBJECTSEEHARTZELLSERVICELETTERHC-SL-61-165).

(1) Therehavebeennumerousoccurrencesofhubfilletradiuscracks,includingincidentsofin-flightbladeseparationinHartzelltwoblade"compact"seriesaluminumhubpropellers.Cracksweretypicallydiscoveredduringaninspectionfollowingreportsofabnormalvibrationorgreaseleakage.Crackstypicallyinitiateinthesameregionofthehubintheareaadjacenttothebladecalledthe"filletradius".Asthecrackspropagatetowardthecenterofthehub,theirprogressionacceleratesandmayresultinthefailureofonehubhalfthatcanprogresstobladeseparation.

(2) SeveraloftheseeventshaveoccurredaftertheissuanceofHartzellServiceBulletin164,FAAAirworthinessDirective90-02-23,bothofwhichrequireda50hourrepetitivevisualinspectionofthehub.Becausethesecrackshaveprovendifficulttodetectvisually,thisServiceBulletinwasissuedtoreplaceServiceBulletin164andrequiresarepetitiveeddycurrentinspection.FAAenforcedRevision2ofthisServiceBulletinthroughtheirissuanceofAirworthinessDirective2001-23-08.

(3) Becauseofcontinuingevents,Revision3tothisServiceBulletinwasreleasedtorequireareductionintherepetitiveinspectionintervalandtoexpandtheinspectionregionfromwhatwasrequiredinAD2001-23-08.

(4) Threeoftherecentcrackedhubsoccurredonhubswithan"A"serialnumbersuffix.Allthreeofthesehubscrackedintherearhubhalf,whereasthefailuresseenintheearlierdesignhub(withoutaserialnumbersuffix)occurredonthefronthubhalf.Thedesignchangesindicatedbythe"A"suffixareconsideredanimprovementovertheoriginal,earlierdesign,butthisevidencesuggeststhatinstallationof"A"suffixhubsmaynotbeasolutiontothecrackingproblem.Toalleviateconcernsoverthe"A"hubdesign,andbecausetherearofthehubisnoteasilyinspected,thereisarequirementtoreplaceall"A"suffixhubswiththecurrentdesign"B"suffixhub.

(5) Updatedregulatoryactionisnotexpected.





D. Description

(1) ThisdocumentprovidesInstructionsforContinuedAirworthiness(ICA).

(2) Theinspectionareahasbeenexpandedtoincludethesurfacesurroundingthebalanceweightattachmenthole,theunchamferedareasurroundingthehubclampingbolthole,andhubfilletradius.Thebalanceweightattachmentholeandhubclampingboltholedonotrequireeddycurrentinspection.

(3) ThisServiceBulletinprovidesrequirementsfor:

(a) Aninitialandrecurringeddycurrentinspectionofthepropellerhubfilletradiusofhubsthatdonothavean"A"or"B"serialnumbersuffix.

(b) Aninitialandrecurringeddycurrentinspectionofthepropellerhubfilletradiusof"A"suffixhubslistedinTable1ofthisServiceBulletin.

(c) Optionalreplacementofthehubasaterminatingactionforhubsthat donothavean"A"or"B"serialnumbersuffix.

(d) Mandatoryreplacementof"A"suffixhubs,includingthosehubslistedinTable 1 of this Service Bulletin.

(4) Revision4reducedtherepetitiveintervalfortheeddycurrentinspection.

(5) Revision6introducestheoptionalterminatingactionofconvertingtotheoil-filledconfigurationforhubswithoutan"A"or"B"suffixserialnumber.

E. Compliance

(1) Hubswithout"A"or"B"serialnumbersuffix(HubsmadebeforeDecember1991-seeFigure2)

(a) Performtheexpandededdycurrentinspectiondescribedinthisrevisionwithinthenext50hoursofoperationsincethelastinspectionperformedinaccordancewithHartzellServiceBulletins164()orHC-SB-61-227orAirworthinessDirectives90-02-23or2001-23-08orwithin50hoursfromtheeffectivedateofthisServiceBulletin,whicheveroccursfirst.

(b) Aftertheinitialinspectionperformtheeddycurrentinspectiondescribedinthisrevisionatintervalsnottoexceed100hoursofoperation.

NOTE: ApropellerhubfromanaircraftthatisaffectedbythisServiceBulletinisnottoberemovedandreusedonanotheraircraftapplicationthatdoesnothavesuchinspectionrequirements.SuchhubinterchangeabilityisnolongerauthorizedfortheapplicationslistedinEffectivityparagraph1.A.(1).Ifpropellerservicehistoryorotherrecordsindicatethatsuchareplacementwasmadeinthepast,thenthe100hourrepetitiveinspectionshouldbecontinuedregardlessofaircraftmodelinstalled.





(c) OptionalTerminatingAction-Replacementofthepropellerhubwitha"B"suffixserialnumberhubisaterminatingactionforthisServiceBulletin.Thesehubshaveadifferentpartnumberandareidentifiedbysuffixletter"B"attheendofthepropellerserialnumber.Refertosection2.MaterialInformation,forpartnumberinformation.

(d) OptionalTerminatingAction-Modificationofthepropellerhubtotheoil-filledconfigurationinaccordancewithHartzellServiceLetterHC-SL-61-273.

1 Modificationoftheaffectedpropellertotheoil-filledconfiguration,inaccordancewithHartzellServiceLetterHC-SL-61-273,isanoptionalterminatingactionfortheinspectionrequirementsspecifiedinthisServiceBulletin.

2 Apropellerthathasbeenmodifiedtotheoil-filledconfiguration,inaccordancewiththisServiceBulletinandHartzellServiceLetterHC-SL-61-273,mustnotbeinstalledonanyotherapplication,includingexperimental.

(2) "A"suffixhubslistedinTable1.

(a) Performtheeddycurrentinspectiondescribedinthisdocumentwithinthenext50hoursofoperationsincethelastinspectionperformedinaccordancewithHartzellServiceBulletins164()orHC-SB-61-227orAirworthinessDirectives90-02-03or2001-23-08orwithin50hoursfromthedateofthisServiceBulletin,whicheveroccursfirst.

(b) Aftertheinitialinspection,performtheeddycurrentinspectiondescribedinthisrevisionatintervalsnottoexceed100hoursofoperation.

(c) Replacethehubwitha"B"suffixhubatthenextoverhaul,nottoexceed1000hoursor72monthsfromDecember24,2001,theeffectivedateofAirworthinessDirective2001-23-08.

NOTE: ApropellerhubfromanaircraftthatisaffectedbythisServiceBulletinisnottoberemovedandreusedonanotheraircraftapplicationthatdoesnothavesuchinspectionrequirements.





(3) "A"suffixhubsnotlistedinTable1(HubsmadebetweenDecember1991andApril1997-seeFigure2)

(a) Non-agricultural,Non-aerobaticapplications:Replacethehubatthenextoverhaul,nottoexceed2000hoursor72monthsfromDecember24,2001,theeffectivedateofAirworthinessDirective2001-23-08.

(b) Agricultural applications:Replacethehubatnextoverhaul,nottoexceed2000hoursor36monthsfromDecember24,2001,theeffectivedateofAirworthinessDirective2001-23-08.

(c) Aerobatic applications:Replacethehubatnextoverhaul,nottoexceed1000hoursor72monthsfromDecember24,2001,theeffectivedateofAirworthinessDirective2001-23-08.

NOTE: ApropellerhubfromanaircraftthatisaffectedbythisServiceBulletinisnottoberemovedandreusedonanotheraircraftapplicationthatdoesnothavesuchinspectionrequirements.

F. Approval

(1) ThisServiceBulletinisapprovedbytheManager,FAA,ChicagoAircraftCertificationOffice,ACE115C,byapprovaldocumentdatedAugust27,2012asanalternatemethodofcompliancewithAirworthinessDirective2001-23-08asfollows:

(a) ThisServiceBulletinisanalternatemethodofcomplianceforAD2001-23-08paragraphs(a)through(e).

(b) ThisrevisiontotheServiceBulletinincludesanadditionalalternatemethodofcomplianceforAD2001-23-08paragraph(e),TerminatingAction.

G. Manpower

(1) Eddycurrentinspectionon-wing

EddyCurrentInspection 0.5Man-hoursSpinnerdomeremovalandinstallation 0.5man-hoursTotal man-hours 1.0 man-hours

(2) Propellerhubreplacement:

PropellerRemoval/Installation 2.0man-hours PropellerHubReplacement 6.0 man-hoursTotalman-hours 8.0man-hours

NOTE: Hubreplacement,whenaccomplishedinconjunctionwithpropelleroverhaul,requiresnoadditionallabor.





(3) Spinnerbulkheadmodification 3.0man-hours (ifrequiredbecauseofhubreplacement)

(4) Propellerhubmodification: PropellerRemoval/Installation 2.0man-hours PropellerDisassembly/Assembly 4.0man-hours PropellerHubModification 2.0 man-hoursTotalman-hours 8.0man-hours Ifrequired,TeflonRemoval/Installation 1.0man-hoursperblade

NOTE: Hubdisassembly/assemblyandTeflon®removal/installationdonotrequireadditionallaborwhenaccomplishedinconjunctionwithpropeller overhaul.

H. WeightandBalance

(1) Thereisa0.50lb.(0.23kg)increaseinweightwithinstallationofahubwithsuffixletter"B"intheserialnumber.

(2) Thereisa0.50lb.(0.23kg)increaseinweightwithhubmodificationtotheoil-filledconfiguration.

I. ElectricalLoadData

(1) NotChanged

J. References

(1) HartzellStandardPracticesManual202A(61-01-02)

(2) HartzellPropellerOwner'sManual115(61-00-15)

(3) HartzellPropellerOwner'sManual145(61-00-45)

(4) HartzellCompactandLightweightCompactNon-Feathering(-1)andAerobatic(-4)PropellerOverhaulandMaintenanceManual113B(61-10-13)

(5) HartzellCompactConstantSpeedandFeatheringPropellerOverhaulManual117D(61-10-17)

(6) HartzellMetalSpinnerMaintenanceManual127(61-16-27)(7) HartzellServiceLetterHC-SL-61-273

(8) AirworthinessDirective90-02-23

(9) AirworthinessDirective2001-23-08

K. OtherPublicationsAffected

None





Socket Fillet Radius Inspection Figure 3

Circledareasencompassthe"filletradius",mustbeinspected.

Hubswithno"A"or"B"serialnumbersuffix,andhubslistedinTable1:Inspecthighlightedareaoneachbladesocket(forwardhubhalf)duringon-winginspection,andfourpoints(bothhubhalves)duringoverhaulinspection.

Inspecttheshadedarea

Balanceweighthole

Hub clamping bolt hole

Inspecttheshadedarea

Typicalcrack NOTE: Thehubclampingboltholesandthebalanceweightholesarenotincludedintheareastobeinspected.

W10571D.epscir.eps





2. MaterialInformation

A. PartsRequired

(1) Ifthehubisreplaced,seethehubreplacementinformationbelow.

Previous Hub PartNumber Description

ReplacementHubPartNumber

D-2201-1 Hub Unit D-6531-41D-2201-2 Hub Unit D-6522-21D-2201-2R Hub Unit D-6522-21RD-2201-3 Hub Unit D-6529-41D-2201-5 Hub Unit D-6531-42D-2201-6 Hub Unit D-6522-22D-2201-7 Hub Unit D-6529-42D-2201-16 Hub Unit D-6522-21D-2201-16R Hub Unit D-6522-21RD-2201-17 Hub Unit D-6529-41D-2201-24 Hub Unit D-6530-30D-2477-3 Hub Unit D-6564-21D-4214 Hub Unit D-6557-42

(2) RefertoHartzellMetalSpinnerMaintenanceManual127(61-16-27)forspinnerbulkheadreplacementpartnumbersand/ormodificationinformation.

B. Special Tooling

(1) AnEddyCurrentInstrumentisrequired.RefertoHartzellStandardPracticesManual202A(61-01-02)fordetails.

C. MaterialNecessaryforPropellerModificationtotheoil-filledconfiguration:

(1) RefertoHartzellServiceLetterHC-SL-61-273foracompletelistofrequirements.





3. AccomplishmentInstructions

A. HubInspection-Hubswithoutan"A"or"B"serialnumbersuffix

(1) Inspectionofthefilletradiiofthe(front)cylinderhalfofthepropellerhubmaybeperformed"on-wing"withoutremovingthepropellerfromtheengine.

(2) ThisinspectionmustbeperformedbyqualifiedpersonnelatanappropriatelylicensedpropellerservicefacilityoracertificatedaircraftmechanicwithaneddycurrentqualificationinaccordancewiththeEddyCurrentInspectionchapterofHartzellStandardPracticesManual202A.

(3) Ifinspectionisperformedduringpropelleroverhaulorifthepropellerhasbeenremovedfromtheaircraftanddisassembled,bothhalvesofthehubaretobeinspected.

(4) On-Winginspectionprocedure-Hubswithout"A"or"B"serialnumbersuffix:

(a) Removethespinnerdomeinaccordancewiththeapplicableowner'smanual.

(b) Ifthepropellerhasbladecounterweights,positionthebladestoprovidemaximumexposureoftheforwardhubhalffilletradiusarea.

NOTE: Ifthepropellerdoesnothavebladecounterweights,specialpositioningofbladesisnotrequired.

1 Forpropellersmodels()HC-()2Y()-2()withcounterweightedpropellerblades,performenginerunandshutdownwithpropellerbladesinthefeatheredposition.Thiswillpositionthebladecounterweightstoprovidemaximumexposureoftheforwardhubhalffilletradiusarea.





WARNING1: DONOTUSEBLADEPADDLESTOFEATHER THE PROPELLER.ITISPOSSIBLEFOREXCESSIVELOADSTOBEAPPLIEDWITHBLADEPADDLESANDRESULTINHIDDENDAMAGETOTHEPITCHCHANGEMECHANISM.

WARNING2: CAREMUSTBETAKENTOUNFEATHERTHEPROPELLERINACCORDANCEWITHSECTION3.(A)(7).

2 Forpropellersmodels()HC-()2Y()-4()withcounterweightedpropellerblades(usedonacrobaticaircraft),manuallyturnbladesfromhightolowpitchtomovethecounterweightawayfromtheinspection area (there is no pitch return spring in these propeller modelsandthebladescanbeturnedmanuallywithouttheuseofbladepaddles).Thiswillpositionthebladecounterweightstoprovidemaximumexposureoftheforwardhubhalffilletradiusarea.

CAUTION: BALANCEWEIGHTSMUSTBERETURNEDTOTHESAMELOCATIONONTHEHUBFROMWHICHTHEYWEREREMOVED.

(c) Removebalanceweightsandmakenoteoflocationasnecessary.

NOTE: ()HC-()2Y()-(2,4)()propellerswithbalanceweightsinstalledmayrequireremovalfromtheaircraftfordisassemblytopermitremovalofthebalanceweightsbehindcounterweights.

(d) Beforeanycleaning,visuallyinspectforacrackedhubintheareaofthehubfilletradii(acrackedhubcanhavetracesofgreasecomingfromthecrackmakingthecrackmorevisible).

(e) Cleanthesurfaceofthehubtoremoveoil,grease,orothercontaminantsthatmayinterferewiththeefficiencyoftheeddycurrentinspection.

NOTE: Paintremovalisnotrequiredforeddycurrentinspection.

(f) PerformeddycurrentinspectioninaccordancewithproceduresinHartzellStandardPracticesManual202A.SeeFigure3.

NOTE: Theinspectionareahasbeenexpandedtoincludethesurfacesurroundingthebalanceweightattachmenthole,theunchamferedareasurroundingthehubclampingbolthole,andhubfilletradius.Thebalanceweightattachmentholeandhubclampingboltholedonotrequireeddycurrentinspection.





DN3607ADN3609ADN3613ADN3615ADN3628ADN3630A

DN3641ADN3940ADN3944ADN3949ADN3962A

Thefollowinghubs,partnumberD-2201-16,wereshippedtoBritishAerospaceforintendeduseonBAE125Bulldogaircraft.Thesehubswerereworkedtohavethepost-1991style"filletradius".

BAE 125 BulldogTable 1

(5) Ifacrackindicationisfound,hubreplacementisrequiredbeforefurtherflight.ReportanyfindingsofacrackedhubtotheHartzellPropellerProductSupportDepartment.

(6) Ifnocrackindicationsarefound,

(a) Afterthefirstinspectiononly,permanentlyidentifythehubtoindicatecompliancewiththisServiceBulletin.Useametalimpressionstamp(0.125inch[3.175mm]),roundbottomcharacters)tostamptheletterEattheendofthepropellerserialnumber.Forexample,propellerserialnumberDN1234wouldbechangedtoDN1234E.ThischangeistobenotedinthepropellerlogbooksothatitprovidesfurtherindicationthatthisService Bulletin is applicable.

CAUTION: BALANCEWEIGHTSMUSTBERETURNEDTOTHESAMELOCATIONONTHEHUBFROMWHICHTHEYWEREREMOVED.

(b) Reinstallbalanceweightsandfastenersfromthelocationtheywereremoved.RefertotheStaticandDynamicBalancechapterofHartzellStandardPracticesManual202A(61-01-02).

(7) Ifthebladeswererequiredtobeplacedinfeatherpositiontoperformthisinspection,thebladesmaybeunfeatheredusingtheprocedurebelow:

(a) Removethevalvecap.

(b) Usingasuitabledevice,depressthevalvestemtorelievetheairchargefromthecylinder.





CAUTION1: REPOSITIONBLADESWITHCARE.DONOTUSEASINGLEBLADEPADDLETOREPOSITIONBLADES.ITISPOSSIBLEFOREXCESSIVELOADSTOBEAPPLIEDWITHBLADEPADDLESANDRESULTINHIDDENDAMAGETOTHEPITCHCHANGEMECHANISM.

CAUTION2: DONOTPUTBLADEPADDLESONDEICEBOOTS,ASBOOTSMAYBEDAMAGED.

(c) Usingabladepaddleoneachblade,simultaneouslymovebothbladesfromthefeatherpositiontothelowpitchposition.

(d) Removethebladepaddles.

(e) Forpropellersthatuseanaircharge,rechargethecylinderinaccordancewiththeapplicableowner'smanual.

1 Reinstalltheairvalvecovercapandspinnerdomeinaccordancewiththeapplicableowner'smanual.

(g) Proceedtosection3.A.(9).

(8) Ifthebladeswerenotrequiredtobefeatheredtoperformthisinspection,reinstallthespinnerdomeinaccordancewiththeapplicableowner'smanual.

(9) MakeanentryinthepropellerlogbookindicatingcompliancewiththehubinspectionrequirementofthisServiceBulletinnotingthetimeforthenextinspection.

B. HubInspection-"A"SuffixHubsListedinTable1.

(1) HubslistedinTable1ofthisbulletinaretobeinitiallyandrepetitivelyinspected,untilaterminatingactionisaccomplished,usingtheproceduredetailedinsection3.A.ofthisServiceBulletin.

(2) HubslistedinTable1ofthisbulletinmustbereplacedinaccordancewithsection1.E.(2)ofthisServiceBulletin.

C. HubInspection-"A"SuffixHubsNotListedinTable1.

(1) Nohubinspectionisrequiredfor"A"suffixhubs.

(2) "A"suffixhubsmustbereplacedinaccordancewithsection1.D.(3)ofthisService Bulletin.





D. HubReplacement

(1) Hubreplacementmustbeperformedbyqualifiedpersonnelatanappropriatelylicensedpropellerservicefacility.Replacementoftheexistinghubwithahubidentifiedbya"B"suffixletterinthepropellerserialnumberisterminatingactionfor this Service Bulletin.

(2) Hubswithouta"B"suffixintheserialnumberthatareremovedfromaircraftapplicationsaffectedbythisServiceBulletin[asdefinedinEffectivity,section1.A.(1)]mustnotbereusedonanotheraircraftapplicationthatdoesnothavesuchinspectionrequirements.Ahubremovedfromanaffectedaircraftmusteitherbeinstalledonanotheraffectedapplication,orberetiredinaccordancewithHartzellStandardPracticesManual202A(61-01-02).

(3) Forspinnerbulkheadmodificationorreplacementpartnumbers,refertotheRepairandModificationchapterofHartzellMetalSpinnerMaintenance Manual127(61-16-27).

(4) Makeanentryinthepropellerlogbookindicatingcompliancewiththehubreplacement instructions as terminating action for this Service Bulletin.

E. OptionalPropellerModificationtotheOil-filledConfiguration

WARNING: MODIFICATIONTOTHEOIL-FILLEDCONFIGURATIONISONLYAPPROVEDFORPROPELLERSAFFECTEDBYTHISSERVICEBULLETIN.

(1) Affectedpropellermodelswithoutan"A"or"B"suffixserialnumbermaybemodifiedtotheoil-filledconfigurationasterminatingactionforthisServiceBulletin.

(a) Modificationofthepropellerhubtotheoil-filledconfigurationmustbeperformedbyqualifiedpersonnelatanappropriatelylicensedpropellerservicefacility.

(b) Modificationofthepropellerhubtotheoil-filledconfigurationmustbeperformedinaccordancewithHartzellServiceLetterHC-SL-61-273.

(c) Apropellermodifiedtotheoil-filledconfiguration,mustnotberestoredtothegreaselubricatedconfiguration.

(2) MakeanentryinthepropellerlogbookindicatingcompliancewiththePropellerModificationtotheOil-filledConfigurationinstructionsasterminatingactionforthis Service Bulletin.

F. RecommendedServiceFacilities

(1) HartzellPropellerhasaworldwidenetworkofRecommendedServiceFacilitiesthatarerecommendedbyHartzellPropellerforoverhaulandrepairofourproducts.





(2) EachservicefacilitymustmeetstandardFAArequirementsandadditionalHartzellPropellerrequirementsbeforebeingrecommendedbyHartzellPropeller.EachservicefacilityisauditedbyHartzellPropellertoverifythecontinuationofthestandards.

(3) HartzellPropellerrecommendsthatyouuseoneoftheseservicefacilitieswhenhavingyourpropelleroverhauledorrepaired.

(4) ForacurrentlistofHartzellPropellerRecommendedServiceFacilities,contactHartzellProductSupportorrefertotheHartzellPropellerwebsiteat www.hartzellprop.com.

G. ContactInformation

HartzellPropellerInc.Attn.:HartzellProductSupportOnePropellerPlacePiqua,Ohio45356-2634USAPhone:(001)937.778.4379Fax:(001)937.778.4391E-mail:[email protected]





Aerospatiale (Morane Saulnier)MS893A,E,180GT 7A14 O-360-A1A HC-C2YK-1B 7666A-2Aerospatiale (Socata)TB-30EPSILON Unknown AEIO-540-L1B5D HC-C2YR-4CF FC8475-6AkrotechG-200 Experimental AEIO-360-A1E HC-C2YR-1A 7690CG-200 Experimental AEIO-360-A1E HC-C2YR-1AX2 7690CAmerican Champion (Bellanca)DW-1EAGLE Unknown IO-540-M1B5D HC-C2YR-1BF F8475R8GCBCSCOUT STC-SA530AL O-360-C2A,C1A,C2E,C1E HC-C2YR-1BF F7666A8GCBCSCOUT A21CE O-360-C2A,C2E,C1A,C1E HC-C2YR-1BF 7666A8GCBCTSCOUT STC-SA530AL IO-360-C1A,C2A,C1E,C2E HC-C2YR-1 7666A8KCABDECATHLON A21CE AEIO-320-E1B;IO-320-E1(A,B) HC-C2YL-4F FC7663-48KCABDECATHLON A23CE AEIO-320-E1B;IO-320-E1(A,B) HC-C2YL-4,-4F,-4BF FC7663-48KCABDECATHLON A21CE AEIO-360-H1A HC-C2YR-4BF,-4CF FC7666A-2AviatEAGLE Experimental AEIO-360-A1D HC-C2YR-1A 7690AEAGLE Experimental AEIO-360-A1D HC-C2YK-4CF FC7666A-2,-4QS-1TPITTS A8SO AEIO-360-A1D,-A1E HC-C2YK-4CF FC7666A-2S-1TPITTS Experimental AEIO-360-A1E HC-C2YR-1A 7690CS-1TPITTS Experimental AEIO-360-A1E HC-C2YR-1AX1 7690CS-1TPITTS Experimental AEIO-360Series HC-C2YR-8X1 7690CS-2APITTS A8SO IO-360-A1A,AEIO-360-A1(A,E) HC-C2YK-4CF FC7666A-2S-2APITTS A8SO IO-360-A1A,AEIO-360-A1(A,E) HC-C2YK-4AF FC7666A-2S-2S,S-2BPITTS A8SO AEIO-540-D4A5 HC-C2YR-4CF FC8477A-4S-2APITTS Experimental IO-360-A1A HC-C2YK-4CF FC7666A-2Q,-4QS-2PITTS Unknown IO-360-A1A HC-C2YK-4 C7666AS-2SPITTS Experimental AEIO-540-D4(A,B,C)5 HC-C2YR-4CF FC8477-6QS-2SPITTS Experimental AEIO-540-D4A5 HC-C2YR-4CF FC8477BeechA45(T-34A),B-45 5A3 IO-470N BHC-L2YF-4F FC8468ARA45(T-34A),B-45 STC-SA876CE IO-470N BHC-L2YF-4BF FC8468ARBritten NormanBN-2;BN-2A-6,8,9; A17EU O-540-E4C5 HC-C2YK-2BF,-2CUF (F)C8477(A)(B)-4,-6BN-2(A,B)-26,27BN-2A-2,3,20,21;BN-2B-20,21 A17EU IO-540-K1B5 HC-C2YK-2(B,C)(U)(F) (F)C8477(A)(B)-4BN-2AMKIII,MKIII-2,-3 A29EU O-540-E4C5 HC-C2YK-2CUF FC8477A(B)-4CessnaA188A,A188B, STC-SA8343SW IO-540-K1(A,B,G)5,-S1A5 HC-C2YR-1BF F8475RT188CAGWAGONDeHavillandCHIPMUNK Unknown IO-540-C4B5 HC-C2YK-4CF FC8477-4REmbraerEMB-200A Unknown O-540-H1B5D HC-C2YK-1BF F8477-4EMB-201A,-202 Unknown IO-540-K1F5D,-K1J5D HC-C2YR-1BF F8475RFlug & FahrzeugwerkeAS202/18ABRAVO A34EU AEIO-360-B1F HC-C2YK-1BF F7666A-2AS202/26A Experimental IO-540-D4B5 HC-C2YK-1BF F8477Great Lakes2T-1A-1,2T-1A-2 A18EA IO-360-B1F6,AEIO-360-B1G6 HC-C2YK-4F FC7666A-22T-1A-2 A18EA IO-360-B1F6,AEIO-360-B1G6 HC-C2YK-4F FC7666A-2

AIRCRAFT MODEL FAA TC/STC NO. ENGINE PROPELLER BLADE

Aircraft and Propeller ApplicationsTable 2, page 1 of 3

NOTE: Affectedpropellersareinstalledon,butnotlimitedto,theaircraftapplicationslistedinTable2.





GrobG115D Experimental AEIO-360-B1F HC-M2YR-1BF 7690E-2G115T AEIO-540-D4A5 HC-C2YR-4CF FC8477A-4HindustanHPT32TRAINER Unknown AEIO-540-D4B5 HC-C2YR-4CF FC8477-4RMorovanZ-42 Unknown AIO-320-B1B HC-C2YL-4F FC7663A-4Z-42 Unknown AIO-320 HC-C2YL-1B 7663A-4526L A30EU AIO-360-B1B HC-C2YK-4 C7666A-2MudryCAP20 Unknown AIO-360-B1A HC-C2YK-4F FC7666APacific AerospaceCT4A,CT4B Unknown IO-360-D,-H,-HB BHC-C2YF-1BF F7663PiperPA-25-260PAWNEE 2A8,2A10 O-540-G1A5 HC-C2YK-1()F F8477PA-32-300,PA-32S-300 A3SO IO-540-K1A5,-K1G5 HC-C2YK-1()F F8475RPA-32-300,PA-32S-300 A3SO IO-540-K1A5,-K1G5 HC-C2YK-1()F F8475(D)-4PA-32-300,PA-32S-300 A3SO IO-540-K1A5,-K1G5 HC-C2YK-1BF F8475RPA-32R-300,PA-32RT-300 A3SO IO-540-K1A5D,-K1G5D HC-C2YK-1()F F8475D-4PA-32RT-300TLANCE A3SO TIO-540-S1AD HC-E2YR-1()F F8477-4PA-32S-300CHEROKEESIX STC-SA932EA IO-540-K1A5 HC-C2YR-1BF F8475+2PA-32-301SARATOGA A3SO IO-540-K1G5 HC-C2YR-1()F F8475D-4PA-32-301TTURBOSARATOGAA3SO TIO-540-S1AD HC-E2YR-1()F F8477-4PA-32R-301SARATOGASP A3SO IO-540-K1G5D HC-C2YR-1() F8475D-4PA-32R-301TT-SARATOGASP A3SO TIO-540-S1AD HC-E2YR-1()F F8477-4PA-36-285BRAVE A9SO,A10SO 6-285-B,C,BA,CA HC-C2YF-1BF F9587APA-36-300BRAVE A9SO,A10SO IO-540-K1G5 HC-C2YK-1()F F8475RSaab-Scania ABMFI-15SAFARI/SUPPORTER Unknown IO-360-A1B6 HC-C2YK-4BF FC7666A-2MFI-17MUSHAK Unknown TSIO-360-LB HC-C2YF-1BF F8459-9RScottish Aviation (BAE)B.125BULLDOG Unknown IO-360-A1B6 HC-C2YR-4BF FC7666A-2Siai Marchetti (Augusta)S.205-18F,18R A9EU O-360-A1A HC-C2YK-1B 7666A-2S.205-20F,20R A9EU IO-360-A1A HC-C2YK-1B 7666A-2S.208,A A9EU IO-540-E4A5 HC-C2YK-1BF F8477-8RS.208,A A9EU IO-540-E4A5 HC-C2YK-1B 8467-8RS.208 Unknown O-540-E4A5 HC-C2YK-4FSF.260,SF.260B A10EU O-540-E4A5 HC-C2YK-1B 8467-8RSF.260,B,C,D A10EU O-540-E4A5,AEIO-540-D4A5 HC-C2YK-1BF F8477-8RSF.260,B,C,D A10EU O-540-E4A5,AEIO-540-D4A5 HC-C2YK-4F FC8477-8RF.260,F.260B A10EU O-540-E4A5 HC-C2YK-1B 8467-8RF.260C,D,E Unknown O-540-E4A5,(AE)IO-540-D4A5 HC-C2YK-1BF F8477-8RF.260C,D,E,F A10EU O-540-E4A5,(AE)IO-540-D4A5 HC-C2YK-1BF F8477-8RF.260C,D,E STC-SA302GL O-540-E4A5,(AE)IO-540-D4A5 HC-C2YK-4()F FC8477-8RSkydancer AviationSD-260 Experimental IO-540-C4B5 HC-C2YR-4CF FC8477A-4SorrellSNS-7 Experimental IO-360-B1E HC-C2YK-4CF FC7666A-2,-4QStaudacher AircraftSTAUDACHER300 Experimental IO-540-K HC-C2YR-4CF FC8477A-4STAUDACHERS-1000 Experimental IO-540-D4A5 HC-C2YK-1BF F8477


Aircraft and Propeller Applications (continued)Table 2, page 2 of 3






SteenSKYBOLT Experimental IO-360-A1A HC-C2YR-4BF,-4CF FC7666A-2SKYBOLT Unknown IO-540-C4B5 HC-C2YK-1BF F8477-4SKYBOLT Unknown IO-360-A1B HC-C2YR-4BF,-4CF FC7666A-2SKYBOLT Unknown IO-540-C4B5 HC-C2YK-4F FC8477-7Stoddard Hamilton2SRG Experimental IO-360 HC-C2YR-4CF FC7666A-4SUPER2SRG Experimental IO-360 HC-C2YR-1BF F7068-2StolpSTARDUSTER Unknown O-360-A1F6 HC-C2YK-4AF FC7666A-4STARDUSTER Unknown O-540-() HC-C2YR-4CF FC8477A-8RSTARDUSTER Unknown IO-540-D4A5 HC-C2YK-4AF FC8467-7RSTARDUSTER Unknown IO-540-D4A5 HC-C2YK-1BF F8467-8TransaviaAIRTRUK Unknown IO-540-K1A5 HC-C2YR-1BF F8475+2AIRTRUK Unknown 6-320 HC-C2YR-1F F9587AUniversalT-25MILITARYTRAINER Unknown IO-540-K1A5 HC-C2YK-4BF FC8475A-2UTVA75AG Unknown AEIO-540-L1B5D HC-C2YR-1BF F8475D-475 Unknown IO-360-B1F HC-C2YK-1BF F7666-2LASTA Unknown AEIO-540-L1A5D HC-C2YR-4CF FC8475-6ValmetL-70VINKA Unknown IO-360-A1B6;AEIO-360-A1B6 HC-C2YR-4F FC7666A-2VansRV-6 Experimental IO-360Series HC-C2YK-4CF FC7666A-2,-4


Aircraft and Propeller Applications (continued)Table 2, page 3 of 3


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