[4910-13-P]DEPARTMENTOFTRANSPORTATIONFederalAviationAdministration14CFRPart39[DocketNo.FAA-2012-1331;DirectorateIdentifier2012-NE-44-AD;Amendment39-18390;AD2016-03-03]RIN2120-AA64AinvorthinessDirectives;Rolls-RoyceplcTurbojetEnginesAGENCY:FederalAviationAdministration(FAA),DOT.ACTION:Finalrule.SUMMARY:Wearesupersedingairworthinessdirective(AD)2013-11-13forallRollsRoycepic(RR)ViperMk.601-22turbojetengines.AD2013-11-13requiredreducingthelifeofcertaincriticalparts.ThisADaddstwonewenginemodelsandadditionalenginepartstotheapplicability.ThisADwaspromptedbyadeterminationbyRRthatadditionalpartsfortheRRViperMk.601-22aswellasadditionalenginemodelsareaffected.WeareissuingthisADtopreventfailureoflife-limitedparts,whichcouldleadtoanuncontainedpartrelease,damagetotheengine,anddamagetotheairplane.DATES:ThisADiseffective[INSERTDATE35DAYSAFTERDATEOFPUBLICATIONINTHEFEDERALREGISTER].TheDirectoroftheFederalRegisterapprovedtheincorporationbyreferenceofcertainpublicationlistedinthisADasof[INSERTDATE35DAYSAFTERDATEOFPUBLICATIONTNTHEFEDERALREGISTER].ADDRESSES:ForserviceinformationidentifiedinthisAD,contactDAServicesOperationsRoomatRolls-Roycepic,DefenseSectorBristol,WH-70,P.O.Box3,Filton,Br1stolBS347QE,UnitedKingdom;phone:+44(0)1179790700;fax:+44(0)1179795498;email:defence-operations-room@rolls-royce.com.YoumayviewthisserviceinformationattheFAA,Engine&PropellerDirectorate,1200DistrictAvenue,Burlington,MA.Forinfom1ationontheavailabilityofthismaterialattheFAA,call781-238-7125.ItisalsoavailableontheInternetathttp://www.regulations.govbysearchingforandlocatlngDocketNo.FAA-2012-1331.ExaminingtheADDocketYoumayexaminetheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingDocketNo.FAA-2012-1331;orinpersonattheDocketManagementFacilitybetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.TheADdocketcontainsthisAD,themandatorycontinuingairworthinessinformation,regulatoryevaluation,anycommentsreceived,andotherinformation.TheaddressfortheDocketOffice(phone:800-647-5527)isDocumentManagementFacility,U.S.DepartmentofTransportation,DocketOperations,M-30,WestBuildingGroundFloor,RoomW12-140,1200NewJerseyAvenueSE.,Washington,DC20590.FORFURTHERINFORMATIONCONTACT:PhilipHaberlen,AerospaceEngineer,EngineCertificationOffice,FAA,Engine&PropellerDirectorate,1200DistrictAvenue,Burlington,MA01803;phone:781-238-7770;fax:781-238-7199;email:philip.haberlen@faa.gov.2SUPPLEMENTARYINFORMATION:DiscussionWeissuedanoticeofproposedrulemaking(NPRM)toamend14CFRpart39tosupersedeAD2013-11-13,Amendment39-17473(78FR34550,June10,2013),("AD2013-11-13").AD2013-11-13appliedtothespecifiedproducts.TheNPRMpublishedintheFederalRegisteronOctober9,2015(80FR61131).TheNPRMproposedtocontinuetorequirereducingthelifeofcertaincriticalparts.ThatNPRMalsoproposedtoaddadditionalpartsfortheRRViperMk.601-22aswellasadditionalenginemodelstotheapplicabilityofthisAD.CommentsWegavethepublictheopportunitytoparticipateindevelopingthisAD.WereceivednocommentsontheNPRM(80FR61131,October9,2015).ConclusionWereviewedtherelevantdataanddeterminedthatairsafetyandthepublicinterestrequireadoptingthisADasproposedexceptforminoreditorialchanges.Wehavedeterminedthattheseminorchanges:•AreconsistentwiththeintentthatwasproposedintheNPRM(80FR61131,October9,2015)forcorrectingtheunsafecondition;and•Donotadd anyadditionalburdenuponthepublicthanwasalreadyproposedintheNPRM(80FR61131,October9,2015).RelatedServiceInformationunder1CFRPart51RRhasissuedRRAlertServiceBulletin(ASB)Mk.521Number72-A408,CirculationA,datedJanuary2015;RRASBMk.521Number72-A408,CirculationB,3datedJanuary2015;RRASBMk.522Number72-A413,CirculationA,datedJanuary2015;RRASBMk.522Number72-A412,CirculationB,datedJanuary2015;andRRASBMk601-22Number72-A207,datedJanuary2015.Theserviceinformationdescribesproceduresforidentifyingtheaffectedpartsinstalledoneachengineanddeterminingtheirrespectivenewlifelimit.ThisserviceinformationisreasonablyavailablebecausetheinterestedpartieshaveaccesstoitthroughtheirnormalcourseofbusinessorbythemeansidentifiedintheADDRESSESsectionofthisfinalrule.CostsofComplianceWeestimatethatthisADaffectsabout46enginesinstalledonairplanesofU.S.registry.Weestimateapro-ratedpartscostof$66,000perengine.Wealsoestimatethatitwilltakeabout4hoursperenginetocomplywiththisAD.Theaveragelaborrateis$85perhour.Basedonthesefigures,weestimatethecostofthisADonU.S.operatorstobe$3,051,640.AuthorityforthisRulemakingTitle49oftheUnitedStatesCodespecifiestheFAA'sauthoritytoissuerulesonaviationsafety.SubtitleI,Section106,describestheauthorityoftheFAAAdministrator.SubtitleVII,AviationPrograms,describesinmoredetailthescopeoftheAgency'sauthority.WeareissuingthisrulemakingundertheauthoritydescribedinSubtitleVII,PartA,Subpartlll,Section44701,"Generalrequirements."Underthatsection,CongresschargestheFAAwithpromotingsafeflightofcivilaircraftinaircommercebyprescribingregulationsforpractices, methods,andprocedurestheAdministratorfindsnecessaryforsafetyinaircommerce.Thisregulationiswithinthescopeofthatauthority4becauseitaddressesanunsafeconditionthatislikelytoexistordeveloponproductsidentifiedinthisrulemakingaction.RegulatoryFindingsThisADwillnothavefederalismimplicationsunderExecutiveOrder13132.ThisADwillnothaveasubstantialdirecteffectontheStates,ontherelationshipbetweenthenationalgovernmentandtheStates,oronthedistributionofpowerandresponsibilitiesamongthevariouslevelsofgovernment.Forthereasonsdiscussedabove,IcertifythatthisAD:(1)Isnota"significantregulatoryaction"underExecutiveOrder12866,(2)Isnota"significantrule"underDOTRegulatoryPoliciesandProcedures(44FR11034,February26,1979),(3)WillnotaffectintrastateaviationinAlaskatotheextentthatitjustifiesmakingaregulatorydistinction,and(4)Willnothaveasignificanteconomicimpact,positiveornegative,onasubstantialnumberofsmallentitiesunderthecriteriaoftheRegulatoryFlexibilityAct.ListofSubjectsin14CFRPart39Airtransportation,Aircraft,Aviationsafety,Incorporationbyreference,Safety.AdoptionoftheAmendmentAccordingly,undertheauthoritydelegatedtomebytheAdministrator,theFAAamendspart39oftheFederalAviationRegulations(14CFRpart39)asfollows:PART39-AIRWORTHINESSDIRECTIVES1.Theauthoritycitationforpart39continuestoreadasfollows:Authority:49U.S.C.l06(g),40113,44701.5§39.13[Amended]2.TheFAAamends§39.13byremovingairw011hinessdirective(AD)AD2013-11-13,Amendment39-17473(78FR34550,June10,2013),("AD2013-11-13"),andaddingthefollowingnewAD:2016-03-03Rolls-Roycepic(TypeCertificatepreviouslyheldbyRolls-Royce(1971)Limited,BristolEngineDivision):Amendment39-18390;DocketNo.FAA-2012-1331;DirectorateIdentifier2012-NE-44-AD.(a)EffectiveDateThisADiseffective[INSERTDATE35DAYSAFTERDATEOFPUBLICATIONINTHEFEDERALREGISTER].(b)AffectedADsThisADsupersedesAD2013-11-13.(c)ApplicabilityThisADappliestoallRolls-Royceplc(RR)ViperMk.521,ViperMk.522,andViperMk.601-22turbojetengines.(d)UnsafeConditionThisADwaspromptedbyareviewbyRRofthelivesofcertaincriticalparts.WeareissuingthisADtopreventfailureoflife-limitedparts,whichcouldleadtoanuncontainedpartrelease,damagetotheengine,anddamagetotheairplane.(e)ComplianceComplywiththisADwithinthecompliancetimesspecified,unlessalreadydone.(1)Within30daysaftertheeffectivedateofthisAD,orbeforeanyaffectedpartexceedsitsnewrevisedlifelimit,whicheveroccurslater,removeanyaffectedengine6fromservice.UseTable1ofRRAlertServiceBulletin(ASB)Mk.521Number72-A408,CirculationA,datedJanuary2015;RRASBMk.521Number72-A408,CirculationB,datedJanuary2015;RRASBMk.522Number72-A413,CirculationA,datedJanuary2015;RRASBMk.522Number72-A412,CirculationB,datedJanuary2015;andRRASBMk601-22Number72-A207,datedJanuary2015,toidentifytheaffectedpartsinstalledoneachengineanddetetminetheirrespectivenewlifelimits.(2)FortheRRViperMk.601-22turbojetengine,removecompressorshaft,partnumberV900766,fromservicebeforethecompressorshaftaccumulates20,720flightcyclessincenew.(3)Replaceanypartidentifiedinparagraph(e)(l)or(e)(2)ofthisADwithaparteligibleforinstallationbeforetheaffectedpartreachesitsnewlifelimitspecifiedinparagraph(e)(2)ofthisADorinthe ASBsreferencedinparagraph(e)(l)ofthisAD.(f)InstallationProhibitionAftertheeffectivedateofthisAD,donotinstallanyaffectedpartidentifiedinparagraph(e)ofthisADintoanyengine,norreturnanyenginetoservicewithanyaffectedpartidentifiedinparagraph(e)ofthisADinstalled,ifanyaffectedpartexceedsthelifelimitspecifiedintheappropriateASBidentifiedinparagraph(e)(l)ofthisADand/orthelifelimitidentifiedinparagraph(e)(2)ofthisAD.(g)AlternativeMethodsofCompliance(AMOCs)TheManager,EngineCertificationOffice,mayapproveAMOCsforthisAD.Usetheproceduresfoundin14CFR39.19tomakeyourrequest.Youmayemailyourrequestto:ANE-AD-AMOC@faa.gov.7(h)RelatedInformation(I)FormoreinformationaboutthisAD,contactPhilipHaberlen,AerospaceEngineer,EngineCertificationOffice,FAA,Engine&PropellerDirectorate,1200DistrictAvenue,Burlington,MAphone:781-238-7770;fax:781-238-7199;email:philip.haberlen@faa.gov.(2)RefertoMCAIEuropeanAviationSafetyAgencyAD2015-0127R1,datedAugust14,2015,formore information.YoumayexaminetheMCAIintheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingDocketNo.FAA-2012-1331.(i)MaterialIncorporatedbyReference(1)TheDirectoroftheFederalRegisterapprovedtheincorporationbyreference(IBR)oftheserviceinformationlistedinthisparagraphunder5U.S.C.552(a)and1CFRpart51.(2)YoumustusethisserviceinformationasapplicabletodotheactionsrequiredbythisAD,unlesstheADspecifiesotherwise.(i)Rolls-Roycepic(RR)AlertServiceBulletin(ASB)Mk.521Number72-A408,CirculationA,datedJanuary2015.(ii)RRASBMk.521Number72-A408,CirculationB,datedJanuary2015.(iii)RRASBMk.522Number72-A413,CirculationA,datedJanuary2015.(iv)RRASBMk.522Number72-A412,CirculationB,datedJanuary2015.(v)RRASBMk601-22Number72-A207,datedJanuary2015.(3)ForRRserviceinformationidentifiedinthisAD,contactDAServicesOperationsRoomatRolls-Royceplc,DefenseSectorBristol,WH-70,P.0.Box3,Filton,8BristolBS347QE,UnitedKingdom;phone:+44(0)1179790700;fax:+44(0)1179795498;email:defence-operations-room@rolls-royce.com.(4)YoumayviewthisserviceinformationatFAA,Engine&PropellerDirectorate,1200DistrictAvenue,Burlington,MA.Forinfom1ationontheavailabilityofthismaterialattheFAA,call781-238-7125.(5)YoumayviewthisserviceinformationattheNationalArchivesandRecordsAdministration(NARA).ForinformationontheavailabilityofthismaterialatNARA,call202-741-6030,orgoto:http://www.archives.gov/federal-register/cfr/ibrlocations.html.IssuedinBurlington,Massachusetts,onFebruary2,2016.(]_AnnC.Mollica,ActingManager,Engine&PropellerDirectorate,AircraftCertificationService.9