IAP_Intro

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    U.S. TERMINAL PROCEDURES PUBLICATION

    EXPLANATION OF TPP TERMS AND SYMBOLS ThediscussionsandexamplesinthissectionwillbebasedprimarilyontheIFR(InstrumentFlightRule

    TerminalProceduresPublication(TPP).OtherIFRproductsusesimilarsymbolsinvariouscolors(seeSection

    2ofthisguide).Thepublicationlegendslistaeronauticalsymbolswithabriefdescriptionofwhateachsymbol

    depicts.Thissectionwillprovideamoredetaileddiscussionofsomeofthesymbolsandhowtheyareusedon

    TPPcharts.

    FAAchartsarepreparedinaccordancewithspecicationsoftheInteragencyAirCartographicCommit-

    tee(IACC),whichareapprovedbyrepresentativesoftheFederalAviationAdministration,andtheDepartment

    ofDefense.Someinformationonthesechartsmayonlyapplytomilitarypilots.

    PILOT BRIEFING INFORMATION

    The pilot brieng information format con-sists of three horizontal rows of boxed proce-

    dure-specic information along the top edge of the

    chart. Altitudes, frequencies and channel, course

    W

    andelevationvalues(exceptHATs,HAThsandHAAs)

    arechartedinboldtype.Thetoprowcontainsthepri-

    maryprocedurenavigationinformation,nalapproach

    course, landingdistance available, touchdown zone,

    thresholdandairportelevations.Themiddlerowcon-

    tainsprocedurenotesandlimitations,iconsindicatingif

    nonstandardalternateand/ortake-offminimumsapply,

    approachlightingsymbology,andthefulltextdescrip-

    tionofthemissedapproachprocedure. Thebottom

    rowcontainsairtogroundcommunicationfacilitiesand

    frequenciesintheorderinwhichtheyareusedduring

    anapproachwiththetowerfrequencyboxbolded.

    NOTE:The W symbol indicates thatoutages of the

    WAASverticalguidancemayoccurdailyatthisloca-

    tiondue toinitialsystem limitations.WAASNOTAMs

    forverticaloutagesarenotprovidedforthisapproach.

    UseLNAVminimaforightplanningattheselocations,

    whetherasadestinationoralternate.Forightopera-

    tionsattheselocations,whentheWAASavionicsindi -catethatLNAV/VNAVorLPVserviceisavailable,then

    vertical guidance may be used to complete the ap-

    proachusingthedisplayedlevelofservice.Shouldan

    outageoccurduringtheprocedure,reversiontoLNAV

    minimamayberequired.AstheWAAScoverageisex-

    panded,the W willberemoved.

    PLANVIEW

    Thedataontheplanviewisdrawntoscale,un-

    lessoneofthefollowingthreechartingdevicesareuti-

    lized:concentricrings,scalebreaksor insetbox(es)

    Mostnon-RNAVinstrumentprocedurechartsdepicta

    referenceordistancecircle (not tobeconfusedwith

    theconcentricrings)whichisnormallycenteredontheFinalApproachFix(FAF)andhasaradiusof10NM

    Thiscircleisintendedonlytoprovideasenseofdis

    tanceandscale.Databothwithinandwithoutthecircle

    isdrawntoscale,unlessascalebreaksymbol is

    utilized.

    Inmostcases,obstructionsclosetotheairport

    which can be depicted within the parametersof the

    airportsketch,willbeshownthereratherthaninthe

    planview.Someoftheseobstaclesmaybecontrolling

    obstructionsfortheprocedure.

    Terrain Depiction

    TerrainwillbedepictedintheplanviewportionofallIAPsatairportsthatmeetthefollowingcriteria:

    If the terrain within the planview exceeds

    4,000feetabovetheairportelevation,or

    If the terrain

    withina6.0 nauticalmile

    radiusoftheAirportRefer-

    encePoint(ARP)risesto

    at least2,000feetabove

    theairportelevation.

    Approximately240

    airportsthroughouttheUS

    currentlymeet the above

    criteria.

    The initial contour

    value (lowest elevation)

    willbeatleast500butno

    more than 1000 above

    the airportelevation.The

    initial contour value may

    belessthan500abovetheairportelevationifneeded

    todepictariseinterrainclosetotherunwayend.The

    nextcontourvaluedepictedwillbeata1000increment

    AT FOR NAO

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    U.S. TERMINAL PROCEDURES PUBLICATION

    Base Areas:theleftandrightbaseareasarebounded

    bythestraight-inTAAandtheextensionoftheinterme-

    diatesegmentcourse.Thebaseareasaredenedby

    a30NMradiuscenteredontheIAFoneithersideof

    theIF/IAF.TheIF/IAFisshowninthebaseareaicons

    withoutitsname.Thealtitudeshownwithinthebase

    areaiconsprovidesminimumIFRobstacleclearance.

    MinimumMSLaltitudesarechartedwithineach

    of these dened/subdivisions that provide at least

    1,000feetofobstacleclearance,ormoreasnecessary

    inmountainousareas.

    NOTE: Additional information for the TAAs can be

    found in the Aeronautical Information Manual (AIM)

    Para5-4-5-d.

    ALTERNATE MINIMUMS

    Whenanalternateairportisrequired,standard

    IFR alternate minimums apply. Precision approach

    proceduresrequirea600ceilingand2statutemiles

    visibility;nonprecisionapproachesrequirean800ceil-ingand2statutemilesvisibility.Whena appearsin

    theNotes sectionof theapproachchart, it indicates

    non-standardIFRalternateminimumsexistfortheair-

    port.ThisinformationisfoundinSectionEoftheTPP.

    If appears,alternateminimumsarenotautho-

    rizedduetounmonitoredfacilityorabsence

    ofweatherreportingservice.CivilpilotsseeFAR91.

    Take-Off Minimums and (Obstacle) Departure Pro-

    cedures

    Whena appearsintheNotessection,itsig -

    nies the airport has nonstandard IFR takeoff mini-

    mumsand/orDepartureProcedurespublishedinSec-

    tionCoftheTPP.

    CIVILUSERSNOTE:FAR91prescribesstan-

    dardtake-offrulesandestablishestake-offminimums

    forcertainoperatorsasfollows:(1)Aircrafthavingtwo

    enginesorless-onestatutemile.(2)Aircrafthaving

    morethantwoengines-one-halfstatutemile.These

    standardminimaapplyintheabsenceofanydifferent

    minimalistedinSectionCoftheTPP.

    ALLUSERS:AirportsthathaveDeparturePro-

    cedures(DPs)designedspecicallytoassistpilotsin

    avoiding obstacles during the climb to the minimumenroute altitude, and/or airports that have civil IFR

    take-offminimumsother than standard, are listed in

    SectionCoftheTPPbycity.Take-offMinimumsand

    DepartureProceduresapplytoallrunwaysunlessoth -

    erwisespecied.Altitudes,unlessotherwiseindicated,

    areminimumaltitudesinMSL.

    DPs specically designed for obstacle avoid-

    ancemaybedescribedinSectionCoftheTPPintext

    orpublishedasagraphicprocedure.Itsnamewillbe

    listed,anditcanbefoundineithertheTPPs(civil)or

    aseparateDepartureProcedurevolume(military),as

    appropriate.UserswillrecognizegraphicobstacleDPs

    bytheword(OBSTACLE)includedintheprocedure

    title;e.g.,TETONTWO(OBSTACLE).Ifnotassigned

    another DP or radar vector byATC, this procedure

    shouldbeownifvisualavoidanceofterrain/obstacles

    cannotbemaintained.

    GraphicDPsdesignedbyATCtostandardize

    trafcows, ensureaircraft separationandenhance

    capacityarereferredtoasStandardInstrumentDe-

    partures(SIDs).SIDsalsoprovideobstacleclearance

    andarepublishedunder theappropriateairportsec-

    tion.ATCclearancemustbereceivedpriortoyinga

    SID.

    NOTE:GraphicDepartureProceduresthathavebeen

    designedprimarilytoassistAirTrafcControlinprovid-

    ingairtrafcseparation(aswellasprovidingobstacle

    clearance)areusuallyassignedbyname inanATC

    clearanceandarenotlistedbynameinSectionCof

    theTPP.

    RNAV Departure Procedures (DP) and StandardTerminal Arrival Routes (STAR)

    RNAVDPsandSTARsarebeingdevelopedto

    supportamoreefcienttrafcowandfurtherNationa

    AirspaceSystem (NAS) capacity. These procedures

    willbeownonlybythoseaircraftwithonboarddata -

    bases.Theseprocedureswillextendoveralargergeo

    graphicareatoallowATCspacingandsequencingto

    occurenroute.Inordertoreducethenumberofpages

    requiredtodepicttheselongerprocedures,changesto

    thegraphicdepictionsandtextualdataarenecessary.

    NAVAIDboxeswillberemovedandidentied

    withonlythename,thethree-letteridentandtheap-

    plicablesymbol.Waypointswillbeidentiedwithway-

    pointsymbolandvelettername.Waypointsthatover-

    layNAVAIDswillbedepictedonlyasNAVAIDs,notasa

    waypoint.Asinglegraphicwillbeusedwhenpossible;

    however,ifnotfeasible,thecommonportionofthepro-

    cedurewillbeshownonasinglepagewithtransitions

    containedonsubsequentpages.Subsequentpages

    willbe subtitledwiththe transitionarea, i.e.,CHEZZ

    ONEDEPARTURENortheastTransitions,orJHAWK

    TWOARRIVAL SouthTransitions.Text remarks tha

    applytotheentireprocedure,oralltransitions,willbechartedonthepagethatcontainsthecommonpoin

    and commonportionof the procedure.Textremarks

    thatapplytoaspecictransitionwillbechartedonthe

    page that contains that transition.Transition text wil

    notincludeadescriptionoftheroutebutwillinstead

    stateexpectationsforaltitudes,clearances,FLrestric-

    tions,aircraftconstraints,specicairportarrivaluse

    etc.

    TherearetwotypesofRNAVSIDsandgraphic

    ObstacleDPs(ODPs):TypeAandTypeB.TypeA

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    generallystartswithaheadingorvectorfromthede-

    parturerunwayendandTypeBgenerallystartswithan

    initialRNAVlegnearthedeparturerunwayend.Type

    A procedures require theaircraftstrackkeepingac-

    curacyremainboundedby2NMfor95%ofthetotal

    ighttime(TypeBboundedby1NM).SeetheAIM

    formorespecicinformation.

    RNAV Procedures Legs (IAPs, SIDs/DPs and

    STARs)

    Duetothevariationsinthedevelopment,doc-

    umentation, charting and database coding of RNAV

    Procedures(IAPs,STARsSIDs/DPs),it hasbecome

    necessarytochartRNAVlegswithspecicinformation

    basedontheirtype.Thisdatadepictionwillprovidepi-

    lotswithaclearerindicationofthetypeoflegtheair-

    craftwillbeyingandtheensuingightprole.

    Heading-nowaypointsshown,hdgcharted

    afterdegrees(i.e.,330hdg),nomileageshown.

    Direct - waypoint at termination of leg, nocourseshown,nomileageshown.

    Course-waypointatterminationofleg,course

    shown,mileageshownonlyifrstlegupondeparture.

    Track-waypointsatbeginningandtermina-

    tionofleg,courseshown,mileageshown.

    Radius-waypointsshownatbeginningand

    terminationofleg,nocourseshown,mileageshown.

    Legmileageswillbelisteddifferentlybasedon

    certaincriteria.MileagesonCourseandTracklegswill

    beshowntothenearestone-tenthofaNMwhenall

    threeofthefollowingconditionsaremet:

    Legterminationis30NMorlesstotheAirport

    ReferencePoint(ARP)(forSTARs,legoriginationmust

    be30NMorlessfromtheARPfortheprimaryairport)

    and,

    legsegmentislessthan30NMand,

    legsegmentisnotpartoftheEnroutestruc-

    ture.

    In all other instances, leg mileages will be

    roundedofftothenearestwholeNM,astheyarecur-

    rently.

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    {Pilot BriefingInformation

    Terminal Arrival

    Areas (TAAs)

    MissedApproach

    Icons

    RNAV Minima

    {

    Instrument Approach Chart Format

    OT FOR N V ATI

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