DEPARTMENTOFTRANSPORTATIONFederalAviationAdministration14CFRPart39[DocketNo.FAA-2015-2208;DirectorateIdentifier2015-NE-19-AD]RIN2120-AA64[4910-13-P]AirworthinessDirectives;HoneywellInternationalInc.(TypeCertificatepreviouslyheldbyAlliedSignalInc.,GarrettTurbineEngineCompany)TurbofanEnginesAGENCY:FederalAviationAdministration(FAA),DOT.ACTION:Noticeofproposedrulemaking(NPRM).SUM:MARY:Weproposetoadoptanewairworthinessdirective(AD)forHoneywellInternationalInc.TFE731-4, -4R,-SAR,-SBR,and-5Rturbofanengines.ThisproposedADwaspromptedbyareportofcertaininterstageturbinetransition(ITT)ductsfailingtomeetcontainmentcapabilityrequirements.ThisproposedADwouldrequirereplacingcertainITTducts.WeareproposingthisADtopreventfailureoftheITTduct,whichcouldleadtoanuncontainedpartrelease,damagetotheengine,anddamagetotheairplane.DATES:WemustreceivecommentsonthisproposedADby[INSERTDATE60DAYSAFTERDATEOFPUBLICATIONINTHEFederalRegister].ADDRESSES:Youmaysendcomments,usingtheproceduresfoundin14CFR11.43and11.45,byanyofthefollowingmethods:•FederaleRulemakingPortal:Gotohttp://www.regulations.gov.Followtheinstructionsforsubmittingcomments.•Fax:202-493-2251.•Mail:U.S.DepartmentofTransportation,DocketOperations,M-30,WestBuildingGroundFloor,RoomW12-140,1200NewJerseyAvenueSE.,Washirigton,DC20590.•HandDelivery:DelivertoMailaddressabovebetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.ForserviceinformationidentifiedinthisproposedAD,contactHoneywellInternationalInc.,IllS34'"Street,Phoenix,AZ85034-2802;phone:800-601-3099;Internet:https://myaerospace.honeywell.com/wps/portal/!ut/.YoumayviewthisserviceinformationattheFAA,Engine&PropellerDirectorate,12NewEnglandExecutivePark,Burlington,MA.ForinformationontheavailabilityofthismaterialattheFAA,call781-238-7125.ExaminingtheADDocketYoumayexaminetheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingDocketNo.FAA-2015-2208;orinpersonattheDocketManagementFacilitybetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.TheADdocketcontainsthisproposedAD,theregulatoryevaluation,anycommentsreceivedandotherinformation.ThestreetaddressfortheDocketOffice(phone:800-647-5527)isintheADDRESSESsection.CommentswillbeavailableintheADdocketshortlyafterreceipt.FORFURTHERINFORMATIONCONTACT:JosephCosta,AerospaceEngineer,LosAngelesAircraftCertificationOffice,FAA,TransportAirplaneDirectorate,3960ParamountBlvd.,Lakewood,CA90712-4137;phone:562-627-5246;fax:562'627-5210;email:joseph.costa@faa.gov.SUPPLEMENTARYINFORMATION:CommentsInvitedWeinviteyoutosendanywritten relevantdata,views,orargumentsaboutthisNPRM.SendyourcommentstoanaddresslistedundertheADDRESSESsection.Include"DocketNo.FAA-2015-2208;DirectorateIdentifier2015-NE-19-AD"atthebeginningofyourcomments.Wespecificallyinvitecommentsontheoverallregulatory,2economic,environmental,andenergyaspectsofthisNPRM.WewillconsiderallcommentsreceivedbytheclosingdateandmayamendthisNPRMbecauseofthosecomments.Wewillpostallcommentswereceive,withoutchange,tohttp://www.regulations.gov,includinganypersonalinformationyouprovide.WewillalsopostareportsmnmarizingeachsubstantiveverbalcontactwereceiveaboutthisNPRM.DiscussionWhiletheHoneywellAerospaceOlomoucfacilityintheCzechRepublicwasreworkingcertainITTducts,forgingsthatwerenotproperlyheattreatedwereinstalledontheaffectedengines.TheheattreatmentisnecessaryfortheITTducts,partnumber(PIN)3075292-4,tomeetmechanicalpropertiesandthecontainmentcapabilityrequirementsoftheITTductdesign.ITTductswithunacceptablecontainmentcapability,ifnotcorrected,couldresultinanuncontainedpartrelease,damagetotheengine,anddamagetotheairplane.RelatedServiceInformationunder1CFRPart51WereviewedHoneywellServiceBulletin(SB)No.TFE731-72-3789,datedMarch23,2015.TheSBdescribesproceduresforremovingaffectedITTducts.ThisserviceinformationisreasonablyavailablebecausetheinterestedpartieshaveaccesstoitthroughtheirnormalcourseofbusinessorbythemeansidentifiedintheADDRESSESsectionofthisNPRM.FAA'sDeterminationWeareproposingthisNPRMbecauseweevaluatedalltherelevantinformationanddeterminedtheunsafeconditiondescribedpreviouslyislikelytoexistordevelopinotherproductsofthesametypedesign.3ProposedADRequirementsThisNPRMwouldrequirereplacingcertainITTducts,PIN3075292-4.CostsofComplianceWeestimatethatthisproposedADaffects47enginesinstalledonairplanesofU.S.registry.Wealsoestimatethatitwouldtakeabout2hoursperenginetocomplywiththisproposedAD.Theaveragelaborrateis$85perhour.Weestimatethatreplacementpartswouldcost$15,000perengine.Basedonthesefigures,weestimatethetotalcostoftheproposedADtoU.S.operatorstobe$712,990.Ourcostestimateisexclusiveofpossiblewarrantycoverage.AuthorityforthisRulemakingTitle49oftheUnitedStatesCodespecifiestheFAA'sauthoritytoissuerulesonaviationsafety.SubtitleI,section106,describestheauthorityoftheFAAAdministrator.SubtitleVII:AviationPrograms,describesinmoredetailthescopeoftheAgency'sauthority.WeareissuingthisrulemakingundertheauthoritydescribedinSubtitleVII,PartA,SubpartIII,Section44701:"Generalrequirements."Underthatsection,CongresschargestheFAAwithpromotingsafeflightofcivilaircraftinaircommercebyprescribingregulationsforpractices,methods,andprocedurestheAdministratorfindsnecessaryforsafetyinairconnnerce.Thisregulationiswithinthescopeofthatauthoritybecauseitaddressesanunsafeconditionthatislikelytoexistordeveloponproductsidentifiedinthisrulemakingaction.RegulatoryFindingsWedeterminedthatthisproposedADwouldnothavefederalismimplicationsunderExecutiveOrder13132.ThisproposedADwouldnothaveasubstantialdirecteffectontheStates,ontherelationshipbetweenthenationalGovernmentandtheStates,4oronthedistributionofpowerandresponsibilitiesamongthevariouslevelsofgovernment.Forthereasonsdiscussedabove,Icertifythisproposedregulation:(1)Isnota"significantregulatoryaction"underExecutiveOrder12866,(2)Isnota"significantrule"undertheDOTRegulatoryPoliciesandProcedures(44FRII034,February26,1979),(3)WillnotaffectintrastateaviationinAlaskatotheextentthatitjustifiesmakingaregulatorydistinction,and(4)Willnothaveasignificanteconomicimpact,positiveornegative,onasubstantialnumberofsmallentitiesunderthecriteriaoftheRegulatoryFlexibilityAct.ListofSubjectsin14CFRPart39Airtransportation,Aircraft,Aviationsafety,Incorporationbyreference,Safety.TheProposedAmendmentAccordingly,undertheauthoritydelegatedtomebytheAdministrator,theFAAproposestoamend14CFRpart39asfollows:PART39-AIRWORTHINESSDIRECTIVES1.Theauthoritycitationforpart39continuestoreadasfollows:Authority:49U.S.C.106(g),40113,44701.§39.13[Amended)2.TheFAAamends§39.13byaddingthefollowingnewairworthinessdirective(AD):HoneywellInternationalInc.(TypeCertificatepreviouslyheldbyAlliedSignalInc.,GarrettTurbineEngineCompany):DocketNo.FAA-2015-2208;DirectorateIdentifier2015-NE-19-AD.5(a)CommentsDueDateWemustreceivecommentsby[INSERTDATE60DAYSAFTERDATEOFPUBLICATIONINTHEFederalRegister].(b)AffectedADsNone.(c)ApplicabilityThisADappliestoallHoneywellInternationalInc.TFE731-4,-4R,-5AR,-5BR,and-5Rturbofanengineswithaninterstageturbinetransition(ITT)duct,partnumber(PIN)3075292-4,installed,withaserialnumber(SIN)listedinTable2ofHoneywellServiceBulletin(SB)No.TFE731-72-3789,datedMarch23,2015.(d)UnsafeConditionThisADwaspromptedbyareportofcertainITTductsfailingtomeetcontainmentcapabilityrequirements.WeareissuingthisADtopreventfailureoftheITTduct,whichcouldleadtoanuncontainedpartrelease,damagetotheengine,anddamagetotheairplane.(e)ComplianceComplywiththisADwithinthecompliancetimesspecified,unlessalreadydone.(1)AtthenextremovaloftheITTductfromtheenginenottoexceed2,600hourstime-in-serviceaftertheeffectivedateofthisAD,removetheaffectedITTductandreplacewithaparteligibleforinstallation.(2)Reserved.(f)DefinitionsForthepurposeofthisADaparteligibleforinstallationisanITTductwithanSINthatisnotlistedinTable2ofHoneywellSBNo.TFE731-72-3789,datedMarch23,2015or,iflistedinTable2ofthisSB,wasreworkedusingHoneywellSBNo.TFE731-72-3789,datedMarch23,2015.6(g)InstallationProhibitionAftertheeffectivedateofthisAD,donotinstallanyITTductwithanSINlistedinTable2ofHoneywellSBNo.TFE731-72-3789,datedMarch23,2015,ontoanyengine,unlesstheITTductismarkedwiththeoverhaul/repairinstructionsnumber"P35864"neartheITTductPINandSINmarkings.(h)AlternativeMethodsofCompliance(AMOCs)TheManager,LosAngelesAircraftCertificationOffice,FAA,mayapproveA1v10CsforthisAD.Usetheproceduresfoundin14CFR39.19tomakeyourrequest.(i)RelatedInformation(1)FormoreinformationaboutthisAD,contactJosephCosta,AerospaceEngineer,LosAngelesAircraftCertificationOffice,FAA,TransportAirplaneDirectorate,3960ParamountBlvd.,Lakewood,CA90712-4137;phone:562-627-5246;fax:562-627-5210;email:joseph.costa@faa.gov.(2)ForserviceinformationidentifiedinthisADcontactHoneywellInternationalInc.,IllS34'"Street,Phoenix,AZ85034-2802;phone:800-601-3099;Internet:https://myaerospace.honeywell.corn!wps/portal/!uti.(3)YoumayviewthisserviceinformationattheFAA,Engine&PropellerDirectorate,12NewEnglandExecutivePark,Burlington,MA.ForinformationontheavailabilityofthismaterialattheFAA,call781-238-7125.IssuedinBurlington,Massachusetts,onOctober22,2015.ColleenM.D'Alessandro,DirectorateManager,Engine&PropellerDirectorate,AircraftCertificationService.7