October10,2014BryanM.BroomChiefInspectorISafetyOfficerJetSelect,LLC4130EastFifthAvenueColumbus,Ohio43219bbroom@jetselectaviation.comUSDepartmentofTransportation1200NewJerseyAve.SEWestBuildingGroundFloor,RoomW12-140Washington,DC20590Submittedvia:www.regulations.govSubject:RequestforTemporaryExemptiontoCFR135.152Parameter5"NormalAcceleration"DearSirorMadam,ItwasbroughttotheattentionofJetSelect,LLC,AirCarrierCertificateNumberU5QA550L,byBombardierAerospace(BA)thatcertainDigitalFlightDataRecorder(DFDR)systemscertifiedandinstalledbyBAoncertainaircraftarenotrecordingaspecificparameterlistedin14CFR135AppendixF-"AirplaneFlightRecorderSpecification"tothefullstatedspecificationslistedforthisspecifiedparameter.Therefore,inanticipationofsuitablerectificationbyBA,JetSelect,LLCisrequestingexemptionfromtherequirementsof14CFR135AppendixF -"AirplaneFlightRecorderSpecification",specifically"5.NormalAcceleration(Vertical)"only.ThisrequestappliestoBombardierChallengerCL-600-2B16(CL-604Variant)manufacturedafterAugust18,2000andwithaDFDRsysteminstalledperBombardierAerospaceSB604-31-010operatingunder14CFR135byJetSelect,LLCdomesticallyandabroad,currently2affectedaircraft(N529KF,5477;N604MC,5581).- 2 -October13,2014PETITIONFOREXEMPTIONSpecificSectionandExtentofReliefRequestedInaccordancewith14CFR11,JetSelect,LLCrequestsanexemptionfromthe"5.NormalAcceleration(Vertical)"parameterrequirementsinAppendixFof14CFR135.152topermitsampling5times(0.2secondspersamplinginterval)perseconduntiltheDataConcentratorUnit(DCU),asubsystemoftheaffectedDFDRsystem,isupdatedtoprovide8timespersecond(0.125secondspersamplinginterval)persecond.Anexemptionwillhavenoadverseimpactonthesafeoperationoftheaircraft.TheDFDRanditsrecordedparametersarenotrequiredforthesafeoperationoftheaircraft.TheDFDR'sprimarypurposeistosupportinvestigationsincaseofaccidents.TheaffectedNormalAccelerationparameterisprovidedthroughtheDCU.JetSelect,LLC'sCL604variantaircrafthas/have2DCUs.ExceptfortheaffectedNormalAccelerationsamplingrate,alldataisbeingcollectedasrequiredby14CFR135AppendixF(e.g.range-3gto+6g,resolution0.004).Theeffectisthatthenormalaccelerationparametercanbecorrelatedtotheappropriaterecordingrate,asdescribedandillustratedbelow,withnosubstantivelossofinformation.--glto•<tHcl•.•ol-p,Suloullll•••lGiventhattheinformationcanbeeffectivelycorrelatedwithnosubstantivedegradationininformation,werespectfullysubmitthatthiscomplianceissuedoesnotaffectthesafe- 3 -October13,2014operationoftheaircraftorhinderpotentialinvestigationsrequiringtheDFDRdata.BombardierAerospacehascommittedtodevelopinganin-servicesolutionthatinvolvesare-designoftheDCUonorbeforeSeptember20151.AdditionallyBombardierAerospacehasindicatedthatasubsequentfleetretrofitperiodtoaccountforpartsavailabilityandallaffectedoperatorsdowntimerequirements,foracompleteretrofitwithintwo(2)yearsofthegrantoftheexemption.JetSelect,LLCiscommittedtoworkingwithBombardierAerospacetoeffectthefinalrectificationtothisissueconcerningouraffectedaircraftassoonaspractical.InmanycasesouraffectedaircraftareoutsidetheUnitedStatesforanextendedperiod.ThepublicbenefitandequivalentlevelofsafetyaddressedbelowsupportingthisexemptionrequesthaveequalapplicabilitytoJetSelect,LLC'sinternationalflights.TheexemptionisinthepublicinterestTheproblemidentifiedabovewasfoundbytheaircraftmanufacturer(Bombardier),andisasystemsdesignproblemwhichCL604operatorshavenowaytocorrectatthistime.GrantingthistimelimitedexemptionwouldbeinthepublicinterestbecauseitwouldallowU.S.Part135operatorstheabilitytocontinuetoprovidetheuniqueservicesthatsupportUSpublic,businessandindustrialleaderswhiletheaircraftmanufacturerdevelopsandcertifies,andtheaffectedCL604operatorsincorporate,themodificationsnecessarytobringtheseaircraftintocompliance.ThisrequestissubstantiallysimilartotheExemptionNo.11052grantedtoJetSolutions.L.L.C.inFAADocketNo.2014-0542onSeptember11,2014.ConditionsandImplementationJetSelect,LLCrequeststhattheFAAallowscontinuedoperationofouraircraftsubjecttotheconditionsspecifiedbelow:1.Thisexemptionisvaliduntiltheincorporationofthemodificationcorrectingthedeficiencydescribedhereinor24monthsfromthedateofthisexemption,whicheveroccursfirst,unlesspreviouslysuperseded,rescindedorterminatedbyactionofJetSelect,LLC2.CopiesofthisexemptiontoberetainedbyJetSelect,LLC,andtherequirementthatacopybeprovidedtotheNTSBandFAAinconnectionwithanyaccidentorincidentwhereDFDRdataisrequestedorrequiredtobeprovided;and3.Within90daysofreceiptoftheBombardierAerospaceServiceBulletinthatrectifiestheNormalAccelerationparameterissue;JetSelect,LLCmustprovidea1AsindicatedbyBombardierandbasedonthefollowing:"ThedevelopmentscheduletakesintoaccountcurrentBombardieranditssuppliersresourcecapacities.TheFAAisinvolvedinsomeofthejointprojects,includingbutnotlimitedtotheChallengerAvionicsupgradeaswellasSteepApproachcertificationand- 4

-

October

13, 2014 schedule

to

its FAA CHDO principal

avionics inspector

(PAl)

, and

/ or persons designated

by the FAA

for completion

of the new installation

within

the time period of this requested exemption. Federal Register Summary

and Publication Jet Select,

LLC,

Air Carrier Certificate

number U5QA550L

, is requesting

exemption from

the requirements

of

14 CFR Appendix

F of 135

. 152

to permit

the sampling

rate

of 5 times

(0.2 seconds

per sampling

interval)

per second

2 until Bombardier

Aerospace issues

a Service

Bulletin

that corrects

the issue,

and

in accordance

with

the conditions specified

in this exemption

request. This applies

to

all

its CL604

aircraft

used

in operations

under

14 CFR

135.

Jet Select, LLC

also requests

to utilize

the exemption

outside

the United

States

.

It

is Jet Select, LLC's position

that safety

would

not

be jeopardized

by issuance

of this

e

x emption

a

s the DFDR

is used solely

as

a recording

device

in accidents

and incidents

and

the affected parameter

will

still provide

useful

data

in such cases.

This exemption

will benefit

the public

by allowing

U.S.

Part

135 operators

the ability

to continue

to provide the unique services

that support

US public, business

and industrial

leaders

while

the aircraft manufacturer

develops

and certifies,

and

the affected

CL604 operators incorporate,

the modifications

necessary

to bring these aircraft

into compliance

. Due

to the immediate

and future impact

and because

this request

does

not establish new agency precedent

as

it

is consistent

with

the scope

of Exemption

11052,

Jet Select,

LLC requests

a waiver

to the

120

day filing requirements

and

the publishing

of

a summary

of the petition

in the Federal Register. If there

are

any questions,

please

do

not hesitate

to contact

this office

at any time. Thank

you, 2 Bombardier

Aerospace

tests

and examination

have shown that

affected

aircraft

are sampling

the "Normal Acceleration"

parameter

at this

rate.