HARTZELL PROPELLER INC.
SERVICE BULLETINTRANSMITTAL SHEET
HC-SB-61-315Propeller - Hub Pitch Change Bore
January 14, 2011
This page transmits a revision to Service Bulletin HC-SB-61-315.
• OriginalIssue,datedOct27/10 • Revision1,datedJan14/11
PropellerassembliesthathavepreviouslycompliedwiththemodificationrequirementsinapreviousversionofthisServiceBulletinarenotaffected.
FAAapprovalhasbeenobtainedontechnicaldatainthispublicationthataffectstypedesign.
Changesareshownbyachangebarintheleftmarginoftherevisedpages.
ThisrevisionisissuedtochangethefollowingintheServiceBulletin:
- ChangesthepreviouslylistedserialnumberEE6714B(isaffected)tothecorrectedserialnumberEE6814B(notaffected)inthelistofhubsmodifiedatHartzell Propeller before shipment.
- AddsastatementforConcurrentRequirements.
HARTZELL PROPELLER INC.
SERVICE BULLETINTRANSMITTAL SHEET
HC-SB-61-315Propeller - Hub Pitch Change Bore
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HARTZELL PROPELLER INC.
SERVICE BULLETINHC-SB-61-315
Propeller - Hub Pitch Change Bore
Oct27/10 HC-SB-61-315Revision1,datedJan14/11 Page1of6
1. PlanningInformation
A. Effectivity
(1) Hartzellcompactaluminumhubpropellers()HC-(C,G,L)(2,3,4)Y(F,K,R)-1()installedonanyHawkerBeechcraftBonanzaorDebonairaircraftareaffectedbythisServiceBulletin.RefertoTable1foralistofhubpartnumbersandaffectedserialnumberprefixes.
(a) Listedmodels/hubsthatdonothaveabushinginstalledorthathavebeenpreviouslymodified/repairedtoincludeanaluminumbushingfortheengine-sidehubhalfinaccordancewiththeRepairsectionofHartzellStandardPracticesManual202A,Volume3(61-01-02)areaffectedbythisService Bulletin.
(b) Listedmodels/hubsthathavebeenpreviouslymodified/repairedtoincludetheDelrin®pitchchangerodborebushingfortheengine-sidehubhalfinaccordancewiththeRepairsectionofHartzellStandardPractices Manual202A,Volume3(61-01-02)arenotaffectedbythisServiceBulletin.
1 ThefollowingpropellerserialnumbersweremodifiedatthefactorybeforeshipmentandarenotaffectedbythisServiceBulletin: 2-bladehubs: EG225B EG227B
3-bladehubs: EE6814B EE6875B EE6904BEE6843B EE6876B EE6907BEE6845B EE6878B EE6909BEE6869B EE6879B EE6912BEE6874B EE6883B EE6913B
(c) Listedmodels/hubswithaserialnumberprefixthatisnotlistedinTable1arenotaffectedbythisServiceBulletin.
NOTE: NewhubsaremanufacturedwithaDelrin® pitchchangerodborebushingwithaspiralretainingringincorporatedintheengine-sideofthehub.Thesenewhubpartnumbershavenewserialnumberprefixes(notlistedinTable1)andarenotaffectedby this Service Bulletin.
©2010,2011-HartzellPropellerInc.-Allrightsreserved
HARTZELL PROPELLER INC.
SERVICE BULLETINHC-SB-61-315
Propeller - Hub Pitch Change Bore
Oct27/10 HC-SB-61-315Revision1,datedJan14/11 Page2of6
(2) Hartzellcompactaluminumhubpropellers()HC-(C,G,L)(2,3,4)Y(F,K,R)-1()installedonanyaircraftotherthantheHawkerBeechcraftBonanzaorDebonairarenotaffectedbythisServiceBulletin.
CAUTION: DONOTUSEOBSOLETEOROUTDATEDINFORMATION.PERFORMALLINSPECTIONSORWORKINACCORDANCEWITHTHEMOSTRECENTREVISIONOFTHISSERVICEBULLETIN.INFORMATIONCONTAINEDINTHISSERVICEBULLETINMAYBESIGNIFICANTLYCHANGEDFROMEARLIERREVISIONS.USEOFOBSOLETEINFORMATIONMAYRESULTINDEATH,SERIOUSBODILYINJURY,AND/ORSUBSTANTIALPROPERTYDAMAGE.REFERTOTHESERVICEBULLETININDEXFORTHEMOSTRECENTREVISIONLEVELOFTHISSERVICEBULLETIN.
Affected Propeller and Hub Models with Required Repair ComponentsTable 1
Engine-side
Propeller ModelHub
Part No.
Affected Serial
Number Prefix
Applicable Procedure
from Manual 202A
Bushing Part No.
Internal Spiral Retaining Ring
Part No.O-ring
Part No.
BHC-C2YF-1()D-6531-()
LQ2 102580-1 A-5839-87 ---
D-2201-() 1 102779 A-5839-93 C-3317-115-1
BHC-L2YF-1()D-6531-()
EG2 102580-1 A-5839-87 ---
D-2201-() 1 102779 A-5839-93 C-3317-115-1
(P)HC-C3YF-1()E-7154-()(R)
CL,EC,EE 1 102779 A-5839-93 C-3317-115-1D-3251-()
(P)HC-G3YF-1()E-7154-()R
LC,HP 1 102779 A-5839-93 C-3317-115-1D-3251-()
PHC-L3YF-1()E-7154-()R
FD 1 102779 A-5839-93 C-3317-115-1D-3251-()
PHC-L3Y(1)F-1() 103025 NP 1 102779 A-5839-93 C-3317-115-1
HC-C3Y(K,R)-1()E-7157-()R
DY 1 102779 A-5839-93 C-3317-115-1D-3251-()
HC-C4YF-1() E-4501-() GK 1 102779 A-5839-93 C-3317-115-1
TheDelrin®bushingmodificationrequiredbythisServiceBulletinwascompletedatthefactorybeforeshipmentforsomepropellers.ThesepropellersarenotaffectedbythisServiceBulletin.RefertosectionA.(1)(b)1ofthisServiceBulletinforthelistofserialnumbersexcludedfromeffectivity.
HARTZELL PROPELLER INC.
SERVICE BULLETINHC-SB-61-315
Propeller - Hub Pitch Change Bore
Oct27/10 HC-SB-61-315Revision1,datedJan14/11 Page3of6
B. ConcurrentRequirements
(1) Additionalservicedocumentsmayapplytothecomponents/propellersaffectedbythisServiceBulletin.CompliancewithadditionalservicedocumentsmaybenecessaryinconjunctionwiththecompletionoftheAccomplishmentInstructionsinthisServiceBulletin.RefertotheHartzellPropellerwebsiteatwww.hartzellprop.comforacross-referenceofservicedocuments.
C. Reason
(1) HartzellPropellerInc.hasreceivedreportsofoilleaksintothepropellerhubattheengine-sidepitchchangerodbore.
(a) Scoringofthepitchchangerodboreisonetypeofdamagethatcanleadtoaleakatthislocation.
(b) Anoilleakatthislocationcanleadtohubpressurizationandhydrauliclock,causingthepropellertooperateasafixedpitchpropelleratthelowpitchbladeanglesetting.
(2) TheDelrin®bushingmodificationrequiredbythisServiceBulletinwillimprovethereliabilityofthesealatthepitchchangerodbore.
(a) Themodificationincludesreworkoftheengine-sidehubboreandinstallationofanewDelrin®bushingwithaspiralretainingring,inaccordancewiththeexistingrepairproceduresintheAluminumHubOverhaulchapterofHartzellStandardPracticesManual202A(61-01-02).RefertoTable1forthepartnumbersspecifictotheaffectedpropellermodel.
(3) AircraftmodelsidentifiedbythisServiceBulletinaresuspectedofbeingsensitivetothemaintenanceoflevelflightwhenthepropellerisatthelowpitchbladeanglesettingandtheaircraftisbeingflownatbestglideairspeed.RefertoFAASpecialAirworthinessInformationBulletinCE-10-21andcontacttheaircraftmanufacturerforadditionaldetails.
(4) Regulatoryactionisexpected.
(5) CompletionoftheAccomplishmentInstructionsisterminatingactionforthisService Bulletin.
D. Description
(1) ThisServiceBulletinrequiresmodificationoftheengine-sidehubhalfoftheaffectedhubstoincorporatetheDelrin®bushingandspiralretainingringspecifiedinTable1inaccordancewiththeexistingrepairproceduresintheAluminumHubOverhaulchapterofHartzellStandardPracticesManual202A(61-01-02).
HARTZELL PROPELLER INC.
SERVICE BULLETINHC-SB-61-315
Propeller - Hub Pitch Change Bore
Oct27/10 HC-SB-61-315Revision1,datedJan14/11 Page4of6
E. Compliance
(1) AffectedpropellersthathavenotbeenmaintainedinaccordancewiththescheduleidentifiedinHartzellServiceLetterHC-SL-61-61Y,mustcompletetheAccomplishmentInstructionsofthisServiceBulletinwithin200flighthours,within12calendarmonths,oratnextmajordisassembly,whicheveroccursfirst.
(2) AffectedpropellersthathavebeenmaintainedinaccordancewiththescheduleidentifiedinHartzellServiceLetterHC-SL-61-61Y,mustcompletetheAccomplishmentInstructionsofthisServiceBulletinatnextmajordisassemblyorwithintheapplicablelimitationsforbothflighthoursandcalendartimesspecifiedinHartzellServiceLetterHC-SL-61-61Y,whicheveroccursfirst.
NOTE1:Aluminumhubpropellermajordisassemblyisdefinedasanyrepairthatrequiresthehubhalvestobeseparated.
NOTE2: HartzellServiceLetterHC-SL-61-61YisavailabletothepublicontheHartzellPropellerwebsiteatwww.hartzellprop.com.
F. Approval
(1) FAAapprovalhasbeenobtainedontechnicaldatainthispublicationthataffectstypedesign.
G.Manpower
(1) Approximately2.0manhoursarerequiredtoperformthehubmodificationprocedurewhenperformedinconjunctionwithpropelleroverhaul.
H. References
(1) HartzellCompactandLightweightCompactNon-Feathering(-1)andAerobatic(-4)PropellerOverhaulandMaintenanceManual113B(61-10-13)
(2) HartzellPropellerOwner'sManual115N(61-00-15)
(3) HartzellStandardPracticesManual202A(61-01-02)
(4) HartzellServiceLetterHC-SL-61-61Y
(5) HartzellServiceLetterHC-SL-61-255
(6) FAASpecialAirworthinessInformationBulletinCE-10-21
I. OtherPublicationsAffected
(1) None
HARTZELL PROPELLER INC.
SERVICE BULLETINHC-SB-61-315
Propeller - Hub Pitch Change Bore
Oct27/10 HC-SB-61-315Revision1,datedJan14/11 Page5of6
2. MaterialInformation
A. MaterialNecessaryforEachPropeller
(1) Abushing,spiralretainingring,ando-ring(whereapplicable)willbeneededforeachaffectedpropeller.RefertoTable1fortheapplicablepartnumbers.
(2) Noadditionalmaterialsarerequiredwhenperformedinconjunctionwithpropeller overhaul.
B. Consumables
(1) Noadditionalconsumablesarerequiredwhenperformedinconjunctionwithpropeller overhaul.
3. AccomplishmentInstructions
A. RemovethepropellerinaccordancewithHartzellOwner'sManual115N(61-00-15).
B. Disassembly,inspection,andassemblyofthepropellerandpropellerhubmustbeperformedbyanFAAcertified,orinternationalequivalent,propellerservicefacility.
C. Inspecttheengine-sidehubhalfforpresenceofaDelrin®bushinginaccordancewithHartzellStandardPracticesManual202A(61-10-02).
(1) Ifnobushingisvisible,proceedtosection3.D.todisassembleforinternalinspection.
(2) Ifanaluminumbushingisvisible,proceedtosection3.D.todisassembleformodification.
(3) IfaDelrin® bushingisinstalled,furtheractionisnotrequired.Proceedtosection3.H.
D. DisassemblethepropellerinaccordancewithHartzellCompactandLightweightCompactNon-Feathering(-1)andAerobatic(-4)PropellerOverhaulandMaintenanceManual113B(61-10-13).
(1) Ifdisassembledbecauseanaluminumbushingwasvisiblefromsection3.C.(2),proceedtosection3.F.
E. Inspecttheinsideoftheengine-sidehubhalfforpresenceofaDelrin® bushing in accordancewithHartzellStandardPracticesManual202A(61-10-02).
(1) Ifnobushingispresent,proceedtosection3.F.formodification.
(2) Ifanaluminumbushingispresent,proceedtosection3.F.formodification.
(3) IfaDelrin® bushingisinstalled,furtheractionisnotrequired.Proceedtosection3.H.
HARTZELL PROPELLER INC.
SERVICE BULLETINHC-SB-61-315
Propeller - Hub Pitch Change Bore
Oct27/10 HC-SB-61-315Revision1,datedJan14/11 Page6of6
CAUTION: THEREPAIROFAPITCHCHANGERODBOREISLIMITEDTOFACILITIESHAVINGAPPROVALTOPERFORMMOUNTINGFLANGEDOWELANDCOMPACTALUMINUMHUBBUSHINGREWORK.FORALISTOFAPPROVEDFACILITIES,REFERTOTHEHARTZELLPROPELLERWEBSITEATWWW.HARTZELLPROP.COMORCONTACTHARTZELLPRODUCTSUPPORT.
F. Accomplishtheapplicablerepairprocedurefortheengine-sidehubhalfinaccordancewiththeRepairoftheHubPitchChangeRodBoressectionintheAluminumHubOverhaulchapterofHartzellStandardPracticesManual202A (61-01-02).RefertoTable1.
G. ReassemblethepropellerinaccordancewithHartzellCompactandLightweightCompactNon-Feathering(-1)andAerobatic(-4)PropellerOverhaulandMaintenanceManual113B(61-10-13).
H. InstallthepropellerinaccordancewithHartzellOwner'sManual115N(61-00-15).
I. Makeanentryinthepropellerlogbookindicatingcompliancewiththeterminatingaction for this Service Bulletin.
J. ContactInformation:
HartzellProductSupport 1 Propeller Place Piqua,Ohio45356USA Phone:(001)937.778.4379 Fax:(001)937.778.4391 E-mail:[email protected]