DEPARTMENTOFTRANSPORTATIONFederalAviationAdministration14CFRPart39[DocketNo.FAA-2016-2042;DirectorateIdentifier2016-NE-02-AD]RIN2120-AA64[4910-13-P[AirworthinessDirectives;BRP-PowertrainGmbH&CoKGReciprocatingEnginesAGENCY:FederalAviationAdministration(FAA),DOT.ACTION:Noticeofproposedrolemaking(NPRM).SUMMARY:Weproposetoadoptanewairworthinessdirective(AD)forcertainBRPPowertrainGmbH&CoKGRotax912F2,912F3,912F4,912S2,912S3,912S4,914F2,914F3,and914F4reciprocatingengines.ThisproposedADwaspromptedbyadesignchangeintroducedbythemanufacturerthatrelocatedtheenginecylinderheadtemperaturesensortoadifferentlocationandconvertedittoacoolanttemperaturesensor.ThisproposedADwouldrequirere-identificationoftheenginemodelandconcurrentmodificationoftheaircrafttoindicatethemaximumcoolanttemperaturelimit.WeareproposingthisADtopreventexceedingenginecoolanttemperaturelimits,whichcouldresultinlossofenginecoolant,damagetotheengine,andlossofcontroloftheairplane.DATES:WemustreceivecommentsonthisproposedADby[INSERTDATE60DAYSAFTERDATEOFPUBLICATIONINTHEFEDERALREGISTER].ADDRESSES:Youmaysendcommentsbyanyofthefollowingmethods:•FederaleRulernakingPortal:Gotohttp://www.regulations.gov.Followtheinstructionsforsubmittingcomments.•Mail:DocketManagementFacility,U.S.DepartmentofTransportation,1200NewJerseyAvenueSE.,WestBuildingGroundFloor,RoomW12-140,Washington,DC20590-0001.•HandDelivery:DelivertoMailaddressabovebetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.•Fax:202-493-2251.ForserviceinformationidentifiedinthisNPRM,contactBRP-PowertrainGmbH&CoKG,Rotaxstrasse1,A-4623Gunskirchen,Austria; Internet:http://www.FLYROTAX.com.YoumayviewthisserviceinformationattheFAA,Engine&PropellerDirectorate,1200DistrictAvenue,Burlington,MA.ForinformationontheavailabilityofthismaterialattheFAA,call781-238-7125.ExaminingtheADDocketYoumayexaminetheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingDocketNo.FAA-2016-2042;orinpersonattheDocketOperationsofficebetween9a.m.and5p.m.,MondaythroughFriday,exceptFederalholidays.TheADdocketcontainsthisproposedAD,themandatorycontinuingairworthinessinformation(MCAI),theregulatoryevaluation,anycommentsreceived,andotherinformation.TheaddressfortheDocketOffice(phone:800-647-5527)isintheADDRESSESsection.CommentswillbeavailableintheADdocketshortlyafterreceipt.2FORFURTHERINFORMATIONCONTACT:RobertGreen,AerospaceEngineer,EngineCertificationOffice,FAA,Engine&PropellerDirectorate,1200DistrictAvenue,Burlington,MA01803;phone:781-238-7754;fax:781-238-7199;email:robert.green@faa.gov.SUPPLEMENTARYINFORMATION:CommentsInvitedWeinviteyoutosendanywrittenrelevantdata,views,orargumentsaboutthisproposedAD.SendyourcommentstoanaddresslistedundertheADDRESSESsection.Include"DocketNo.FAA-2016-2042;DirectorateIdentifier2016-NE-02-AD"atthebeginningofyourcomments.Wespecificallyinvitecommentsontheoverallregulatory,economic,environmental,andenergyaspectsofthisproposedAD.WewillconsiderallcommentsreceivedbytheclosingdateandmayamendthisproposedADbasedonthosecomments.Wewillpostallcommentswereceive,withoutchange,tohttp://www.regulations.gov,includinganypersonalinformationyouprovide.WewillalsopostareportsummarizingeachsubstantiveverbalcontactwithFAApersonnelconcerningthisproposedAD.DiscussionTheEuropeanAviationSafetyAgency(EASA),whichistheTechnicalAgentfortheMemberStatesoftheEuropeanCommunity,hasissuedEASAAD2015-0240,datedDecember18,2015(referredtohereinafteras"theMCAI"),tocorrectanunsafeconditionforthespecifiedproducts.TheMCAIstates:3AdesignchangeoftheenginecylinderheadswasintroducedbyBRP-PowertraininMarch2013whichmodifiestheengine/aircraftinterfacesbysubstitutingthepreviouscylinderheadtemperature(CHT)measurement(limittemperature135oC/150°C)withacoolanttemperature(CT)measurement(limittemperature120°C).Thedesignchangewascommunicatedon15May2013byBRPPowertrainServiceInstruction(SI)912-020R7/914-022R7(singledocument)butwasnotidentifiedbyachangeoftheenginemodeldesignationoroftheenginePINbutonlythroughthecylinderheadPINand thepositionofthetemperaturesensor.Consequently,engines\Viththenewcylinderheads(installedduringproductionorreplacedin-serviceduringmainteriance)maybeinstalledonanaircraftwithoutconcurrentmodificationofthataircraft,instructionsforwhichshouldbeprovidedbythetypecertificate(TC)holderorthesupplementaltypecertificate(STC)holder,asapplicable.Inthiscase,thecoolanttemperaturewithamaximumengineoperatinglimitof120°C(validforenginesoperated\Vithwaterdilutedglycolcoolant)isdisplayedonaCHTindicator\Vithatypicallimitmarking(redradial/range)ofmorethan120"C.BRP-PowertrainGmbH&CoKGintroducedadesignchangethatrelocatedtheenginecylinderheadtemperaturesensorfromthetopofthecylindertoanewlocationandconvertedittoacoolanttemperaturesensor.Thecoolanttemperaturemaximumengineoperatinglimitisnowlessthanthecylinderheadtemperaturemaximumoperatinglimit.YoumayobtainfurtherinformationbyexaminingtheMCAIintheADdocketontheInternetathttp://www.regulations.govbysearchingforandlocatingDocketNo.FAA-2016-2042.RelatedServiceInformationunder1CFRPart51BRP-PowertrainGmbH&CoKGhasissuedServiceBulletin(SB)SB-912-068/SB-914-049(onedocument),datedAprill6,2015.Theserviceinformationdescribesproceduresforre-identificationofthetypeplateforcertainBRP-PowertrainGmbH&CoKGRotax912and914engines.Thisserviceinformationisreasonably4availablebecausetheinterestedpartieshaveaccesstoitthroughtheirnormalcourseofbusinessorbythemeansidentifiedintheADDRESSESsectionofthisNPRM.FAA'sDeterminationandRequirementsofThisProposedADThisproducthasbeenapprovedbytheaviationauthorityofAustria,andisapprovedforoperationintheUnitedStates.PursuanttoourbilateralagreementwiththeEuropeanCommunity,EASAhasnotifiedusoftheunsafeconditiondescribedintheMCAIandserviceinformationreferencedabove.WeareproposingthisADbecauseweevaluatedallinformationprovidedbyEASAanddeterminedtheunsafeconditionexistsandislikelytoexistordeveloponotherproductsofthesametypedesign.ThisproposedADwouldrequirere-identificationoftheenginemodelandtheconcurrentmodificationoftheaircrafttoindicatemaximumcoolanttemperaturelimit.CostsofComplianceWeestimatethatthisproposedADaffectsabout40enginesinstalledonaircraftofU.S.registry.Wealsoestimatethatitwouldtakeabout5hoursperenginetoinspectandre-identifythetypeplate.Theaveragelaborrateis$85perhour.Basedonthesefigures,weestimatethecostofthisproposedADonU.S.operatorstobe$17,000.AuthorityforThisRulemakingTitle49oftheUnitedStatesCodespecifiestheFAA'sauthoritytoissuerulesonaviationsafety.SubtitleI,section106,describestheauthorityoftheFAAAdministrator."SubtitleVII:AviationPrograms,"describesinmoredetailthescopeoftheAgency'sauthority.Weareissuingthisrulemakingundertheauthoritydescribedin"SubtitleVII,PartA,SubpartIII,Section44701:Generalrequirements."Underthatsection,Congress5chargestheFAAwithpromotingsafeflightofcivilaircraftinaircommercebyprescribingregulationsforpractices,methods,andprocedurestheAdministratorfindsnecessaryforsafetyinaircommerce.Thisregulationiswithinthescopeofthatauthoritybecauseitaddressesanunsafeconditionthatislikelytoexistordeveloponproductsidentifiedinthisrulemakingaction.RegulatoryFindingsWedetermined thatthisproposedADwouldnothavefederalismimplicationsunderExecutiveOrder13132.ThisproposedADwouldnothaveasubstantialdirecteffectontheStates,ontherelationshipbetweenthenationalGovermnentandtheStates,oronthedistributionofpowerandresponsibilitiesamongthevariouslevelsofgovernment.Forthereasonsdiscussedabove,Icertifythisproposedregulation:(1)Isnota"significantregulatoryaction"underExecutiveOrder12866,(2)Isnota"significantrule"undertheDOTRegulatoryPoliciesandProcedures(44FR11034,February26,1979),(3)WillnotaffectintrastateaviationinAlaskatotheextentthatitjustifiesmakingaregulatorydistinction,and(4)Willnothaveasignificanteconomicimpact,positiveornegative,onasubstantialnumberofsmallentitiesunderthecriteriaoftheRegulatoryFlexibilityAct.ListofSubjectsin14CFRPart39Airtransportation,Aircraft,Aviationsafety,Incorporationbyreference,Safety.6TheProposedAmendmentAccordingly,undertheauthoritydelegatedtomebytheAdministrator,theFAAproposestoamend14CFRpart39asfollows:PART39-AIRWORTHINESSDIRECTIVES1.Theauthoritycitationforpart39continuestoreadasfollows:Authority:49U.S.C.106(g),40113, 44701.§39.13[Amended]2.TheFAAamends§39.13byaddingthefollowingnewairworthinessdirective(AD):BRP-PowertrainGmbH&CoKG(formerlyBRP-RotaxGmbH&CoKG,Bombardier-RotaxGmbH&Co.KG,andBombardier-RotaxGmbH):DocketNo.FAA-2016-2042;DirectorateIdentifier2016-NE-02-AD.(a)CommentsDueDateWemustreceivecommentsby[INSERTDATE60DAYSAFTERDATEOFPUBLICATIONINTHEFEDERALREGISTER].(b)AffectedADsNone.(c)ApplicabilityThisADappliestoBRP-PowertrainGmbH&CoKGRotaxmode1912F2,912F3,912F4,912S2,912S3,912S4,914F2,914F3,and914F4reciprocatingengineswithacylinderheadthathasapartnumber(PIN)listedinFigure1toparagraph(c)ofthisADandthatisinstalledinposition2or3.7Figure

1 to Paragraph

(c)

of this AD- Post-Modification

Cylinder

Head

PIN Engine

Model 912

F2,

912

F3,

912

F4,

914

F2, 914

F3,

and

914

F4 912

S2,

912

S3,

and

912

S4 (d) Reason

Cylinder

Head

PIN PIN 413235

or PIN 413236 PIN 413185 This

AD

was prompted

by

a design

change introduced

by the manufacturer

that relocated

the engine cylinder

head temperature

sensor

to

a new location

and converted

it to

a coolant temperature

sensor.

We

are issuing

this

AD

to prevent exceeding

coolant temperature

limits,

which

could

result

in loss

of engine coolant,

damage

to the engine, and

loss

of control

of the airplane. (e) Actions

and Compliance Comply

with

this

AD within

6 months

after

the effective

date

of this

AD, unless already

done. (1) For engines

with cylinder

heads

that have

a PIN listed

in Figure

1 to paragraph (c)

of this

AD installed

on both position

2 and position

3, change

the engine

model designation

on

the engine

type

data

plate

to include

a "-0

1" suffix.

Use paragraph

3 .1.1

of BRP-Powertrain

Service Bulletin

(SB) SB-912-068/SB-914-049,

dated Apri116,

2015,

to make

this change. (2) For engines

with

only

one cylinder

head having

a PIN listed

in Figure

1 to paragraph

(c)

of this

AD installed

in position

2 or

3, do one

of the following: (i) Replace

the cylinder

heads having

PINs

listed

in Figure

J to paragraph

(c)

of this

AD

with

a PIN 623682 cylinder

head

on Rotax

912

F2,

912

F3,

912

F4,

914

F2, 8914

F3,

and

914

F4 engines

and with

a PIN 623687 cylinder

head

on Rotax

912

S2, 912

S3,

and

912

S4 engines.

If you complete

the actions

in paragraph

( e )(2)(i),

no further action

is required.

Or, (ii) Install eligible cylinder

heads

with

PINs identified

in Figure

1 to paragraph

(c) of this

AD

on both cylinder

head positions

2 and

3 and change

the engine

model designation

of the engine

type

data plate

in accordance

with paragraph

(e )(1)

of this

AD. (3) For engines re-identified

in accordance

with paragraph

(e)(!)

or

( e)(2)(ii)

of this

AD, before

further

flight, modify

the aircraft

cockpit instrumentation

and related documentation

to indicate

a maximum

coolant temperature

limit

of 120 degrees

Celsius using FAA-approved

procedures.

These re-identified

engines

remain

eligible

for installation

on approved aircraft-engine

combinations. (I) Alternative

Methods

of Compliance

(AMOCs) The Manager,

Engine Certification

Office,

FAA,

may approve

AMOCs

for this AD.

Use

the procedures

found

in

14 CFR 39.19

to make

your request.

You

may email your request

to: ANE-AD-AMOC@faa.gov. (g) Related Information (1) For more information

about

this

AD, contact

Robert

Green, Aerospace Engineer,

Engine Certification

Office,

FAA, Engine

& Propeller Directorate,

1200 District Avenue, Burlington,

MA 01803;

phone: 781-238-7754;

fax: 781-238-7199; email: robert.green@faa.gov. (2)

For more information

about

the installation modifications

described

in paragraph

(e)(3)

of this

AD, contact

Jim Rutherford,

Aerospace

Engineer,

FAA,

Small 9AirplaneDirectorate,901LocustAve.Room301,KansasCity,MO;phone:816-329-4165;fax:816-329-4090;email:Jim.Rutherford@faa.gov.(3)RefertoMCAIEuropeanAviationSafetyAgency,AD2015-0240,datedDecember18,2015,formoreinformation.YoumayexaminetheMCAIintheADdocketontheInternetathttp://\VWW.regulations.govbysearchingforandlocatingitinDocketNo.FAA-2016-2042.(4)BRF-PowertrainGmbH&CoKGServiceBulletin(SB)SB-912-068/SB-914-049(onedocument),datedApril16,2015,canbeobtainedfromBRP-PowertrainGmbH&CoKG,usingthecontactinformationinparagraph(g)(6)ofthisproposedAD.(5)ThefollowingaircraftserviceinformationcontainsFAA-approvedproceduresforcomplyingwithparagraph(e)(3)ofthisADandcanbeobtainedfromBRFPowertrainGmbH&Co.KG,usingthecontactinformationinparagraph(g)(6)ofthisproposedAD:Figure2toParagraph(g)ofthisAD-AircraftType/ModelandServiceInformationTypeIMode1(s)SBAquilaAT01SB-AT01-029TECNAMP92,P2002andP2006TSB-183-CSTECNAMP2008JCSB-185-CSDiamondH36"Dimona"andHK36"SuperDimona'OSB36-111DiamondDV20"Katana"OSB20-066Diamond(Canada)DA20-A1"Katana"SBDa20-72-04M&DAVO68"Samburo"TM808-31ScheibeSF25CandSF36RSI02-1410(6) For service information

identified

in this proposed

AD, contact

BRPPowertrain

GmbH

& Co.

KG, Rotaxstrasse

1, A-4623 Gunskirchen,

Austria;

phone:

+43 7246

6010;

fax:

+43 7246

601 9130;

email: airwortqiness@brp.com;

Internet: www.rotax-aircraft-engines.com.

(7) You

may view

this service infonnation

at the FAA, Engine

& Propeller Directorate,

1200 District Avenue, Burlington,

MA

For information

on the availability

of this material

at the FAA,

call 781-238-7125. Issued

in Burlington, Massachusetts,

on March

11, 2016. Colleen

M.

D' Alessandro, Manager,

Engine

& Propeller Directorate, Aircraft Certification

Service.

11