Data Dictionary for the NFDC Airport Runways Table

Field Number Description
BaseEndAcltStopDistanceAvailableASDA A62 Declared distances Actual Stop Distance Available, in feet.
BaseEndALS A49 Approach light system. ALSAF - 3,000 foot high intensity approach lighting system with centerline sequence flashers. ALSF1 - standard 2,400 foot high intensity approach lighting system with sequenced flashers, category I configuration. ALSF2 - standard 2,
BaseEndCenterlineLights A46 Runway centerline lights availability. (ex. Y - yes; N - no)
BaseEndCrossingHeight A44 Threshold crossing height (feet AGL). Height that the effective visual glide path crosses above the runway threshold. (ex. 32)
BaseEndDisplacedElevation E160 Elevation at displaced threshold (feet AGL). (ex. 1200.1 187.1 200)
BaseEndDisplacedLatitude E161 Latitude at displaced threshold (formatted).
BaseEndDisplacedLatitudeS E161S Latitude at displaced threshold (seconds).
BaseEndDisplacedLength A51 Displaced threshold - length in feet from runway end. (ex. 120 or NONE)
BaseEndDisplacedLongitude E162 Longitude at displaced threshold (formatted).
BaseEndDisplacedLongitudeS E162S Longitude at displaced threshold (seconds).
BaseEndDisplacedThresholdElevationSource NONE Displaced threshold elevation source. (ex. NACO, AVN)
BaseEndDisplacedThresholdElevationSourceDate NONE Displaced threshold elevation source date (MM/DD/YYYY).
BaseEndDisplacedThresholdPositionSource NONE Displaced threshold position source. (ex. NACO, AVN)
BaseEndDisplacedThresholdPositionSourceDate NONE Displaced threshold position source date (MM/DD/YYYY).
BaseEndElevationSource NONE Runway end elevation source. (ex. NACO, AVN)
BaseEndElevationSourceDate NONE Runway end elevation source date (MM/DD/YYYY).
BaseEndGlidePathAngle A45 Visual glide path angle (hundredths of degrees). (ex. 3.00)
BaseEndGradient E40 Runway end gradient. (ex. 0.2)
BaseEndGradientDirection E40 Runway end gradient direction (UP or DOWN).
BaseEndID A30A Base end identifier. The runway end described by the following information. Relates to the first part of the runway identification. (ex. For runway 18/36 the base end is 18)
BaseEndILSType I22 Instrument landing system (ILS) type. (ex. ILS - instrument landing system; MLS - microwave landing system; SDF - simplified directional facility; localizer - localizer; LDA - localizer-type directional aid; ISMLS - interim standard microwave landing syst
BaseEndLandingDistanceAvailableLAHSO NONE Available landing distance for land and hold short operations (LAHSO).
BaseEndLandingDistanceAvailableLAHSOCoordSrc NONE LAHSO hold short point geographic coordinates source.
BaseEndLandingDistanceAvailableLAHSOCoordSrcDate NONE Hold short point geographic coordinates source date (mm/dd/yyyy).
BaseEndLandingDistanceAvailableLAHSOHldPtLatitude NONE Latitude of LAHSO hold short point (formatted).
BaseEndLandingDistanceAvailableLAHSOHldPtLatitudeS NONE Latitude of LAHSO hold short point (seconds).
BaseEndLandingDistanceAvailableLAHSOHldPtLongitude NONE Longitude of LAHSO hold short point (formatted).
BaseEndLandingDistanceAvailableLAHSOHldPtLongitudeS NONE Longitude of LAHSO hold short point (seconds).
BaseEndLandingDistanceAvailableLAHSOIntEntityDesc NONE Description of entity defining hold short point if not an intersecting runway (e.g., an intersecting taxiway).
BaseEndLandingDistanceAvailableLAHSOIntRwyID NONE ID of intersecting runway defining hold short point.
BaseEndLandingDistanceAvailableLDA A63 Declared distances Landing Distance Available, in feet.
BaseEndMarkingsCondition A42 Runway markings (condition). (ex. G - good; F - fair; P - poor)
BaseEndMarkingsType A42 Runway markings (type). (ex. PIR - precision instrument; NPI – non-precision instrument; BSC - basic; NRS - numbers only; NSTD - nonstandard (other than numbers only); BUOY - buoys (seaplane base); STOL - short takeoff and landing; NONE - none)
BaseEndObjectClearSlope A57 Controlling object clearance slope. Value, expressed as a ratio of N:1, of the clearance that is available to approaching aircraft. If the clearance slope is greater than 50:1 then 50 or 50+ will be entered.
BaseEndObjectDescription A52 Controlling object description.
BaseEndObjectDistance A55 Controlling object distance from runway end distance, in feet, from the physical runway end to the controlling object. This is measured using the extended runway centerline to a point abeam the object. (ex. 800 0 NONE)
BaseEndObjectHeight A54 Controlling object height above runway height, in feet ADL, the object is above the physical runway end.
BaseEndObjectMarkLight A53 Controlling object marked/lighted. (ex. M - marked, L - lighted, ML - marked and lighted, NONE - none)
BaseEndObjectOffset A56 Controlling object centerline offset distance, in feet, that the controlling object is located away from the extended runway centerline as measured horizontally on a line perpendicular to the extended runway centerline. Also, indicates the direction (left
BaseEndPart77Category A50 FAA FAR Part 77 (objects affecting navigable airspace) runway category. (ex. A(V) - utility runway with a visual approach, B(V) - other than utility runway with a visual approach, A(NP) - utility runway with a non-precision approach, C - other than utilit
BaseEndPhysicalElevation E70 Elevation (feet MSL) at physical runway end. (ex. 58 120.5 13.0)
BaseEndPhysicalLatitude E68 Latitude of physical runway end (formatted).
BaseEndPhysicalLatitudeS E68S Latitude of physical runway end (seconds).
BaseEndPhysicalLongitude E69 Longitude of physical runway end (formatted).
BaseEndPhysicalLongitudeS E69S Longitude of physical runway end (seconds).
BaseEndPositionSource NONE Runway end position source. (ex. NACO, AVN)
BaseEndPositionSourceDate NONE Runway end position source date (MM/DD/YYYY).
BaseEndREIL A48 Runway end identifier lights (REIL) availability. (ex. Y - yes; N - no)
BaseEndRightTrafficPattern A23 Right hand traffic pattern for landing aircraft. (ex. Y - yes; N - no)
BaseEndRVR A47 Runway visual range equipment (RVR). Indicates location(s) at which RVR equipment is installed. Can be any one or a combination of the following three one letter codes: T - touchdown; M - midfield; R - rollout; N - no RVR available. Possible values: T, M,
BaseEndRVV A47A Runway visibility value equipment (RVR). Indicates presence of RVR equipment (ex. Y - yes; N - no)
BaseEndTakeOffDistanceAvailableTODA A61 Declared distances Take Off Distance Available, in feet.
BaseEndTakeOffRunAvailableTORA A60 Declared distances Take Off Run Available, in feet.
BaseEndTDZElevation E163 Elevation at touchdown zone (feet AGL) (ex. 1200 187.5)
BaseEndTouchdownLights A46A Runway end touchdown lights availability. (ex. Y - yes; N - no)
BaseEndTouchdownZoneElevationSource NONE Touchdown zone elevation source. (ex. NACO, AVN)
BaseEndTouchdownZoneElevationSourceDate NONE Touchdown zone elevation source date (MM/DD/YYYY).
BaseEndTrueAlignment E46 Runway end true alignment true magnetic heading of the runway - to the nearest degree. (ex. For runway end 18, could be 184)
BaseEndVASI A43 Visual glide slope indicators. Acronyms: SAVASI - simplified abbreviated visual approach slope indicator; VASI - visual approach slope indicator; PAPI - precision approach path indicator; tri - tri-color visual approach slope indicator; PSI - pulsating/st
EdgeLightsIntensity A40 Runway lights edge intensity. (ex. HIGH - high; MED - medium; LOW - low; NSTD - non-standard lighting system; NONE - no edge lighting system)
PavementClass A39 Pavement classification number (PCN). A rating system that expresses the relative load carrying capacity of a pavement in terms of a standard single wheel load. The rating is structured so that a pavement with a particular PCN value can support, without w
ReciprocalEndAcltStopDistanceAvailableASDA A62 Declared distances Actual Stop Distance Available, in feet.
ReciprocalEndALS A49 Approach light system. ALSAF - 3,000 foot high intensity approach lighting system with centerline sequence flashers. ALSF1 - standard 2,400 foot high intensity approach lighting system with sequenced flashers, category I configuration. ALSF2 - standard 2,
ReciprocalEndCenterlineLights A46 Runway centerline lights availability. (ex. Y - yes; N - no)
ReciprocalEndCrossingHeight A44 Threshold crossing height (feet AGL). Height that the effective visual glide path crosses above the runway threshold. (ex. 32)
ReciprocalEndDisplacedElevation E160 Elevation at displaced threshold (feet AGL). (ex. 1200.1 187.1 200)
ReciprocalEndDisplacedLatitude E161 Latitude at displaced threshold (formatted).
ReciprocalEndDisplacedLatitudeS E161S Latitude at displaced threshold (seconds).
ReciprocalEndDisplacedLength A51 Displaced threshold - length in feet from runway end. (ex. 120 or NONE)
ReciprocalEndDisplacedLongitude E162 Longitude at displaced threshold (formatted).
ReciprocalEndDisplacedLongitudeS E162S Longitude at displaced threshold (seconds).
ReciprocalEndDisplacedThresholdElevationSource NONE Displaced threshold elevation source. (ex. NACO, AVN)
ReciprocalEndDisplacedThresholdElevationSourceDate NONE Displaced threshold elevation source date (MM/DD/YYYY).
ReciprocalEndDisplacedThresholdPositionSource NONE Displaced threshold position source. (ex. NACO, AVN)
ReciprocalEndDisplacedThresholdPositionSourceDate NONE Displaced threshold position source date (MM/DD/YYYY).
ReciprocalEndElevationSource NONE Runway end elevation source. (ex. NACO, AVN)
ReciprocalEndElevationSourceDate NONE Runway end elevation source date (MM/DD/YYYY).
ReciprocalEndGlidePathAngle A45 Visual glide path angle (hundredths of degrees). (ex. 3.00)
ReciprocalEndGradient E40 Runway end gradient. (ex. 0.2)
ReciprocalEndGradientDirection E40 Runway end gradient direction (UP or DOWN).
ReciprocalEndID A30A Reciprocal end identifier. The runway end described by the following information. Relates to the first part of the runway identification. (ex. For runway 18/36 the reciprocal end is 36)
ReciprocalEndILSType I22 Instrument landing system (ILS) type. (ex. ILS - instrument landing system; MLS - microwave landing system; SDF - simplified directional facility; localizer - localizer; LDA - localizer-type directional aid; ISMLS - interim standard microwave landing syst
ReciprocalEndLandingDistanceAvailableLAHSO NONE Available landing distance for land and hold short operations (LAHSO).
ReciprocalEndLandingDistanceAvailableLAHSOCoordSrc NONE LAHSO hold short point geographic coordinates source.
ReciprocalEndLandingDistanceAvailableLAHSOCoordSrcDate NONE Hold short point geographic coordinates source date (mm/dd/yyyy).
ReciprocalEndLandingDistanceAvailableLAHSOHldPtLatitude NONE Latitude of LAHSO hold short point (formatted).
ReciprocalEndLandingDistanceAvailableLAHSOHldPtLatitudeS NONE Latitude of LAHSO hold short point (seconds).
ReciprocalEndLandingDistanceAvailableLAHSOHldPtLongitude NONE Longitude of LAHSO hold short point (formatted).
ReciprocalEndLandingDistanceAvailableLAHSOHldPtLongitudeS NONE Longitude of LAHSO hold short point (seconds).
ReciprocalEndLandingDistanceAvailableLAHSOIntEntityDesc NONE Description of entity defining hold short point if not an intersecting runway (e.g., an intersecting taxiway).
ReciprocalEndLandingDistanceAvailableLAHSOIntRwyID NONE ID of intersecting runway defining hold short point.
ReciprocalEndLandingDistanceAvailableLDA A63 Declared distances Landing Distance Available, in feet.
ReciprocalEndMarkingsCondition A42 Runway markings (condition). (ex. G - good; F - fair; P - poor)
ReciprocalEndMarkingsType A42 Runway markings (type). (ex. PIR - precision instrument; NPI – non-precision instrument; BSC - basic; NRS - numbers only; NSTD - nonstandard (other than numbers only); BUOY - buoys (seaplane base); STOL - short takeoff and landing; NONE - none)
ReciprocalEndObjectClearSlope A57 Controlling object clearance slope. Value, expressed as a ratio of N:1, of the clearance that is available to approaching aircraft. If the clearance slope is greater than 50:1 then 50 or 50+ will be entered.
ReciprocalEndObjectDescription A52 Controlling object description.
ReciprocalEndObjectDistance A55 Controlling object distance from runway end distance, in feet, from the physical runway end to the controlling object. This is measured using the extended runway centerline to a point abeam the object. (ex. 800 0 NONE)
ReciprocalEndObjectHeight A54 Controlling object height above runway height, in feet ADL, the object is above the physical runway end.
ReciprocalEndObjectMarkLight A53 Controlling object marked/lighted. (ex. M - marked, L - lighted, ML - marked and lighted, NONE - none)
ReciprocalEndObjectOffset A56 Controlling object centerline offset distance, in feet, that the controlling object is located away from the extended runway centerline as measured horizontally on a line perpendicular to the extended runway centerline. Also, indicates the direction (left
ReciprocalEndPart77Category A50 FAA FAR Part 77 (objects affecting navigable airspace) runway category. (ex. A(V) - utility runway with a visual approach, B(V) - other than utility runway with a visual approach, A(NP) - utility runway with a non-precision approach, C - other than utilit
ReciprocalEndPhysicalElevation E70 Elevation (feet MSL) at physical runway end. (ex. 58 120.5 13.0)
ReciprocalEndPhysicalLatitude E68 Latitude of physical runway end (formatted).
ReciprocalEndPhysicalLatitudeS E68S Latitude of physical runway end (seconds).
ReciprocalEndPhysicalLongitude E69 Longitude of physical runway end (formatted).
ReciprocalEndPhysicalLongitudeS E69S Longitude of physical runway end (seconds).
ReciprocalEndPositionSource NONE Runway end position source. (ex. NACO, AVN)
ReciprocalEndPositionSourceDate NONE Runway end position source date (MM/DD/YYYY).
ReciprocalEndREIL A48 Runway end identifier lights (REIL) availability. (ex. Y - yes; N - no)
ReciprocalEndRightTrafficPattern A23 Right hand traffic pattern for landing aircraft. (ex. Y - yes; N - no)
ReciprocalEndRVR A47 Runway visual range equipment (RVR). Indicates location(s) at which RVR equipment is installed. Can be any one or a combination of the following three one letter codes: T - touchdown; M - midfield; R - rollout; N - no RVR available. Possible values: T, M,
ReciprocalEndRVV A47A Runway visibility value equipment (RVR). Indicates presence of RVR equipment (ex. Y - yes; N - no)
ReciprocalEndTakeOffDistanceAvailableTODA A61 Declared distances Take Off Distance Available, in feet.
ReciprocalEndTakeOffRunAvailableTORA A60 Declared distances Take Off Run Available, in feet.
ReciprocalEndTDZElevation E163 Elevation at touchdown zone (feet AGL) (ex. 1200 187.5)
ReciprocalEndTouchdownLights A46A Runway end touchdown lights availability. (ex. Y - yes; N - no)
ReciprocalEndTouchdownZoneElevationSource NONE Touchdown zone elevation source. (ex. NACO, AVN)
ReciprocalEndTouchdownZoneElevationSourceDate NONE Touchdown zone elevation source date (MM/DD/YYYY).
ReciprocalEndTrueAlignment E46 Runway end true alignment true magnetic heading of the runway - to the nearest degree. (ex. For runway end 36, could be 4)
ReciprocalEndVASI A43 Visual glide slope indicators. Acronyms: SAVASI - simplified abbreviated visual approach slope indicator; VASI - visual approach slope indicator; PAPI - precision approach path indicator; tri - tri-color visual approach slope indicator; PSI - pulsating/st
RunwayID DLID Runway identification. Ex. 01/19; 18L/36R (parallel runways); H1 (helipad); N/S (north/south); ALL/WAY (sealane); B1 (balloonport)
RunwayLength A31 Physical runway length (nearest foot) (ex. 3500)
RunwayLengthSource NONE Runway length source. (ex. NACO, AVN)
RunwayLengthSourceDate NONE Runway length source date (MM/DD/YYYY).
RunwaySurfaceTreatment A34 Runway surface treatment. (ex. GRVD - saw-cut or plastic grooved; PFC - porous friction course; AFSC - aggregate friction seal coat; RFSC - rubberized friction seal coat; WC - wire comb or wire tine; NONE - no special surface treatment)
RunwaySurfaceTypeCondition A33 Runway surface type and condition. CONC - Portland cement concrete; ASPH - asphalt or bituminous concrete; SNOW - snow; ICE - ice; MATS - pierced steel planking, landing mats, membranes; TREATED - oiled, soil cement or lime stabilized; GRAVEL - gravel, cinders, crushed rock, coral or shells, slag; TURF - grass, sod; DIRT - natural soil; WATER - water; E - excellent condition; G - good condition; F - fair condition; P - poor condition; L - failed condition
RunwayWeightBearingCapacityDDT A38 Pavement strength under dual dual tandem wheel landing gear in thousands of pounds.
RunwayWeightBearingCapacityDT A37 Pavement strength under dual tandem wheel landing gear in thousands of pounds.
RunwayWeightBearingCapacityDW A36 Pavement strength under dual wheel landing gear in thousands of pounds.
RunwayWeightBearingCapacitySW A35 Pavement strength under single wheel landing gear in thousands of pounds.
RunwayWidth A32 Physical runway width (nearest foot) (ex. 100)
SiteNumber DLID Landing facility site number. The unique identifying number of the airport whose runway is being described. Together with the runway id field, this provides the unique key to a runway record.
State DLID Runway state post office code. The state where the landing facility is located. This was used in sorting the entire file by state and site number.