DEPARTMENTOFTRANSPORTATIONFederalAviationAdministration14CFRPart39(DocketNo.FAA-2013-1059;DirectorateIdentifier2013-NE-36-AD;]RIN2120-AA64[4910-13-P]AirworthinessDirectives;Pratt&WhitneyCanadaCorp.TurbopropEnginesAGENCY:FederalAviationAdministration(FAA),DOT.ACTION:Noticeofproposedrulemaking(NPRM).SUMMARY:WeproposetosupersedeAirworthinessDirective(AD)2014-14-02,whichappliestocertainPratt&WhitneyCanadaCorp.(P&WC)PW120,PW121,PW121A,PW124B,PW127,PW127E,PW127F,PW127G,andPW127Mturbopropengines.AD2014-14-02requiresremovalofthe0-ringsealfromthefuelmanifoldfitting.SinceweissuedAD2014-14-02,wereceivedreportsoffue1seepagepastthemetal-to-metalsealingsurfacesofthefuelnozzleandfuelmanifold flowadapter.ThisproposedADwouldrequirereplacementofthefuelnozzleandthefuelmanifoldflowadapter.WeareproposingthisADtopreventin-flightfuelleakage,enginefire,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.,Washington,DC20590.•HandDelivery:DelivertoMailaddressabovebetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.ForserviceinformationidentifiedinthisproposedAD,contactPratt&WhitneyCanadaCorp.,1000Marie-Victorin,Longueuil,Quebec,Canada,J4G1A1;phone:800-268-8000;fax:450-647-2888;Website:www.pwc.ca.YoumayviewthisserviceinformationattheFAA,Engine&PropellerDirectorate,12NewEnglandExecutivePark,Burlington,MA.ForinformationontheavailabilityofthismaterialattheFAA,call781-238-7125.ExaminingtheADDocketYoumayexaminetheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingDocketNo.FAA-2013-1059;orinpersonattheDocketManagementFacilitybetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.TheADdocketcontainsthisproposedAD,theregulatoryevaluation,anycommentsreceived,andotherinformation.ThestreetaddressfortheDocketOffice(phone:800-647-5527)isintheADDRESSESsection.CommentswillbeavailableintheADdocketshortlyafterreceipt.FORFURTHERINFORMATIONCONTACT:BarbaraCaufield,AerospaceEngineer,EngineCertificationOffice,FAA,Engine&PropellerDirectorate,12NewEnglandExecutivePark,Burlington,MA01803;phone:781-238-7146;fax:781-238-7199;email:barbara.caufield@faa.gov.2SUPPLEMENTARYINFORMATION:CommentsInvitedWeinviteyoutosendanywrittenrelevantdata,views,orargumentsaboutthisproposedAD.SendyourcommentstoanaddresslistedundertheADDRESSESsection.Include"DocketNo.FAA-2013-1059;DirectorateIdentifier2013-NE-36-AD"atthebeginningofyourcomments.Wespecificallyinvitecommentsontheoverallregulatory,economic,environmental,andenergyaspectsofthisproposedAD.WewillconsiderallcommentsreceivedbytheclosingdateandmayamendthisproposedADbecauseofthosecomments.Wewillpostallcommentswereceive,withoutchange,tohttp://www.regulations.gov,includinganypersonalinformationyouprovide.WewillalsopostareportsummarizingeachsubstantiveverbalcontactwereceiveaboutthisproposedAD.DiscussionOnJune30,2014,weissuedAD2014-14-02,Amendment39-17896(79FR39958,July11,2014),("AD2014-14-02"),forcertainP&WCPW120,PW121,PW121A,PW124B,PW127,PW127E,PW127F,PW127G,andPW127Mturbopropengines.AD2014-14-02requiresremovalofthe0-ringsealfromthefuelmanifoldfitting.AD2014-14-02resultedfromreportsoffuelleaksattheinterfacebetweenthefuelmanifoldandthefuelnozzlethatresultedinenginefire.WeissuedAD2014-14-02topreventin-flightfuelleakage,enginefire,damagetotheengine,anddamagetotheairplane.ActionsSinceAD2014-14-02WasIssuedSinceweissuedAD2014-14-02,wehavereceivedreportsoffuelseepagepastthemetaltometalsealingsurfacesofthefuelnozzleandfuelmanifoldflowadapter.Themanufacturerhassinceredesignedthefuelmanifoldflowadaptertopreventin-flightfuel3leakage.Thisredesignincorporatesnewinternaldiametersonthefuelmanifoldadaptersandthefuelnozzles.RelatedServiceInformationunder1CFRPart51WereviewedP&WCSBNo.PW100-72-21861,datedNovember21,2014,whichidentifies thefinalfuelnozzleconfiguration.ThisSBreferstothefollowingadditionalSBsthatprovidethefinalconfiguration:P&WCSBNo.PW100-72-21803,RevisionNo.5,datedNovember21,2014,P&WCSBNo.PW100-72-21860,RevisionNo.2,datedNovember21,2014,andP&WCSBNo.PWl00-72-21841,RevisionNo.3,datedDecember22,2014.Tillsserviceinformationisreasonablyavailable;seeADDRESSESforwaystoaccessthisserviceinformation.FAA'sDeterminationWeareproposingthisADbecauseweevaluatedalltherelevantinformationanddeterminedtheunsafeconditiondescribedpreviouslyislikelytoexistordevelopinotherproductsofthesametypedesign.ProposedADRequirementsThisproposedADwouldrequirereplacementofthefuelnozzleandthefuelmanifoldflowadapter.CostsofComplianceWeestimatethattillsproposedADwouldaffectabout150enginesinstalledonairplanesofU.S.registry.Wealsoestimatethatitwouldtakeabout2.5hoursperenginetoperformthereplacementrequiredbythisproposedAD.Theaveragelaborrateis$85perhour.Thecostofafuelnozzlemanifoldreplacementis$146,594.Basedonthesefigures,weestimatethecostoftheproposedADonU.S.operatorstobe$22,020,975.AuthorityforthisRulemakingTitle49oftheUnitedStatesCodespecifiestheFAA'sauthoritytoissuerulesonaviationsafety.SubtitleI,Section106,describestheauthorityoftheFAAAdministrator.4SubtitleVII,AviationPrograms,describesinmoredetailthescopeoftheAgency'sauthority.WeareissuingthisrulemakingundertheauthoritydescribedinSubtitleVII,PartA,SubpartIII,Section44701,"Generalrequirements."Underthatsection,CongresschargestheFAAwithpromotingsafeflightofcivilaircraftinaircommercebyprescribingregulationsforpractices,methods,andprocedurestheAdministratorfindsnecessaryforsafetyinaircommerce.Thisregulationiswithinthescopeofthatauthoritybecauseitaddressesanunsafeconditionthatislikelytoexistordeveloponproductsidentifiedinthisrulemakingaction.RegulatoryFindingsWehavedeterminedthatthisproposedADwouldnothavefederalismimplicationsunderExecutiveOrder13132.ThisproposedADwouldnothaveasubstantialdirecteffectontheStates,ontherelationshipbetweenthenationalGovernmentandtheStates,oronthedistributionofpowerandresponsibilitiesamongthevariouslevelsofgovernment.Forthereasonsdiscussedabove,Icertifythattheproposedregulation:(1)Isnota"significantregulatoryaction"underExecutiveOrder12866,(2)Isnota"significantrule"undertheDOTRegulatoryPoliciesandProcedures(44FR11034,February26,1979),(3)WillnotaffectintrastateaviationinAlaskatotheextentthatitjustifiesmakingaregulatorydistinction,and(4)Willnothaveasignificanteconomicimpact,positiveornegative,onasubstantialnumberofsmallentitiesunderthecriteriaoftheRegulatoryFlexibilityAct.ListofSubjectsin14CFRPart39Airtransportation,Aircraft,Aviationsafety,Incorporationbyreference,Safety.5TheProposedAmendmentAccordingly,undertheauthoritydelegatedtomebytheAdministrator,theFAAproposestoamend14CFRpart39asfollows:PART39-AIRWORTHINESSDIRECTIVES1.Theauthoritycitationforpart39continuestoreadasfollows:Authority:49U.S.C.106(g),40113,44701.§39.13[Amended]2.TheFAAamends§39.13byremovingAirworthinessDirective(AD)2014-14-02,Amendment39-17896(79FR39958,July11,2014),andaddingthefollowingnewAD:Pratt&WhitneyCanadaCorp.:DocketNo.FAA-2013-1059;DirectorateIdentifier2013-NE-36-AD.{a)CommentsDueDateTheFAAmustreceivecommentsonthisADactionby[INSERTDATE60DAYSAFTERDATEOFPUBLICATIONINTHEFEDERALREGISTER].(b)AffectedADsThisADreplacesAD2014-14-02,Amendment39-17896(79FR39958,July11,2014).(c)ApplicabilityThisADappliestoPratt&WhitneyCanadaCorp.(P&WC)PW120,PW121,andPW121AturbopropengineswithpostSB21610configuration;PW124B,PW127,PW127E,andPW127FturbopropengineswithpostSB21607configuration;PW127EandPW127Fturbopropengineswithserialnumbers(SINs)PCE-EB0366andearlier;PW127GturbopropengineswithSINsPCE-AX0275andearlier;andPW127MturbopropengineswithSINsPCE-ED0810andearlier.6(d)UnsafeConditionThisADwaspromptedbyreportsoffuelseepagepastthemetal-to-metalsealingsurfacesofthefuelnozzleandfuelmanifoldflowadapter.WeareissuingthisADtopreventin-flightfuelleakage,enginefire,damagetotheengine,anddamagetotheairplane.(e)ComplianceComplywiththisADwithinthecompliance timesspecified,unlessalreadydone.Within1,500flighthoursaftertheeffectivedateofthisAD,oratthenextengineshopvisit,whicheveroccursfirst:(1)Removethe0-ringsealfromthefuelmanifoldfitting,(2)Removefuelmanifoldflowadapter,partnumber(PINs)3059754-01,3059757-01,and3059760-01;and(3)Installafuelnozzlegasketandfuelmanifoldflowadapterthatareeligibleforinstallationinaccordancewithparagraphs3.A,3.B,and3.CofP&WCSBNo.PW100-72-21861,datedNovember21,2014.(f)InstallationProhibitionAftertheeffectivedateofthisAD,fuelmanifoldadapter,PINs3059754-01,3059757-01,and3059760-01,andfuelmanifoldgasket,PIN3079354-01,arenoteligibleforinstallationinanyengine.(g)DefinitionForthepurposeofthisAD,anengineshopvisitistheinductionofanengineintotheshopformaintenanceinvolvingtheseparationofpairsofmajormatingengineflanges.Theseparationofengineflangessolelyforthepurposeoftransportationwithoutsubsequentenginemaintenancedoesnotconstituteanengineshopvisit.7(h)AlternativeMethodsofCompliance(AMOCs)TheManager,EngineCertificationOffice,FAA,mayapproveAMOCstotrusAD.Usetheproceduresfoundin14CFR39.19tomakeyourrequest.Youmayemailyourrequestto:ANE-AD-AMOC@faa.gov.(i)RelatedInformation(1)FormoreinformationaboutthisAD,contactBarbaraCaufield,AerospaceEngineer,EngineCertificationOffice,FAA,Engine&PropellerDirectorate,12NewEnglandExecutivePark,Burlington,MA01803;phone:781-238-7146;fax:781-238-7199;email:barbara.caufield@faa.gov.(2)RefertoMCAITransportCanadaADCF-2014-41,datedNovember26,2014,forrelatedinformation.YoumayexaminetheMCAIintheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingitinDocketNo.FAA-2013-1059.(3)P&WCSBNo.PW100-72-21861,datedNovember21,2014;P&WCSBNo.PWI00-72-21803,RevisionNo.5,datedNovember21,2014;P&WCSBNo.PW100-72-21860,RevisionNo.2,datedNovember21,2014;andP&WCSBNo.PW100-72-21841,RevisionNo.3datedDecember22,2014,canbeobtainedfromPratt&WhitneyCanada,usingthecontactinformationinparagraph(i)(4)ofthisAD.(4)ForserviceinformationidentifiedinthisAD,contactPratt&WhitneyCanadaCorp.,1000Marie-VictorinBlvd.,Longueuil,Quebec,Canada,J4G1A1;phone:800-268-8000;fax:450-647-2888;Website:www.pwc.ca.(5)YoumayviewthisserviceinformationattheFAA,Engine&PropellerDirectorate,12NewEnglandExecutivePark,Burlington,MA.ForinformationontheavailabilityofthismaterialattheFAA,call781-238-7125.8

# Issued

in Burlington

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on May

19

, 2015. 

# C:{;{(3 Acting Directorate

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# 9