IlsGs

ILS Glide Slope component data including antenna location, elevation, glide slope angle, and frequency

Source: NASRTable: ILS_GSVersion: e25086c3e952 (effective 2026-04-16)

Ordered by SITE_NO, SITE_TYPE_CODE, RWY_END_ID. This combination is also the unique record key.

Example query

# Introspect the IlsGs type in GraphiQL at https://api.nav.sortie.co/graphql
# Example shape (pair with a compatible root query field):
{
  # ...rootQuery... {
    effDate
    siteNo
    siteTypeCode
    stateCode
  # }
}

Run at https://api.nav.sortie.co/graphql — GraphiQL is available in-browser.

Fields (27)

Field	Type	Description	Units	Enum
effDate ← EFF_DATE	String	The 28 Day NASR Subscription Effective Date in format YYYY/MM/DD
siteNo ← SITE_NO	String	Landing Facility Site Number. A unique identifying number. References SITE_NO in ILS_BASE.
siteTypeCode ← SITE_TYPE_CODE	SiteTypeCode	Landing Facility Type Code		A — AIRPORT B — BALLOONPORT C — SEAPLANE BASE G — GLIDERPORT H — HELIPORT U — ULTRALIGHT
stateCode ← STATE_CODE	IlsBaseStateCode	Associated State Post Office Code, standard two letter abbreviation for US States and Territories		56 values AK — Alaska AL — Alabama AR — Arkansas AS — American Samoa AZ — Arizona CA — California CO — Colorado CT — Connecticut DC — District of Columbia DE — Delaware FL — Florida GA — Georgia GU — Guam HI — Hawaii IA — Iowa ID — Idaho IL — Illinois IN — Indiana KS — Kansas KY — Kentucky LA — Louisiana MA — Massachusetts MD — Maryland ME — Maine MI — Michigan MN — Minnesota MO — Missouri MP — Northern Mariana Islands MS — Mississippi MT — Montana NC — North Carolina ND — North Dakota NE — Nebraska NH — New Hampshire NJ — New Jersey NM — New Mexico NV — Nevada NY — New York OH — Ohio OK — Oklahoma OR — Oregon PA — Pennsylvania PR — Puerto Rico RI — Rhode Island SC — South Carolina SD — South Dakota TN — Tennessee TX — Texas UT — Utah VA — Virginia VI — Virgin Islands VT — Vermont WA — Washington WI — Wisconsin WV — West Virginia WY — Wyoming
arptId ← ARPT_ID	String	Location Identifier. Unique 3-4 character alphanumeric identifier assigned to the Landing Facility
city ← CITY	String	Associated City Name
countryCode ← COUNTRY_CODE	String	Country Post Office Code
rwyEndId ← RWY_END_ID	String	ILS Runway End Identifier
ilsLocId ← ILS_LOC_ID	String	ILS Identification code. References ILS_LOC_ID in ILS_BASE.
systemTypeCode ← SYSTEM_TYPE_CODE	SystemTypeCode	ILS System Type code indicating the type of instrument landing system		9 values LS — ILS - Instrument Landing System SF — SDF - Simplified Directional Facility LC — LOC - Localizer LA — LDA - Localizer-Type Directional Aid LD — ILS/DME - Instrument Landing System/Distance Measuring Equipment SD — SDF/DME - Simplified Directional Facility/Distance Measuring Equipment LE — LOC/DME - Localizer/Distance Measuring Equipment LG — LOC/GS - Localizer/Glide Slope DD — LDA/DME - Localizer-Type Directional Aid/Distance Measuring Equipment
componentStatus ← COMPONENT_STATUS	ComponentStatus	Operational Status of the Glide Slope		OPERATIONAL IFR — Operational for IFR use OPERATIONAL RESTRICTED — Operational with restrictions SHUTDOWN — Shut down and not operational
componentStatusDate ← COMPONENT_STATUS_DATE	String	Effective Date of Glide Slope Operational Status
latDeg ← LAT_DEG	Int	Glide Slope Transmitter Antenna Latitude Degrees	degrees
latMin ← LAT_MIN	Int	Glide Slope Transmitter Antenna Latitude Minutes	minutes
latSec ← LAT_SEC	Float	Glide Slope Transmitter Antenna Latitude Seconds	seconds
latHemis ← LAT_HEMIS	LatHemis	Glide Slope Transmitter Antenna Latitude Hemisphere		N — North S — South
latDecimal ← LAT_DECIMAL	Float	Glide Slope Transmitter Antenna Latitude in decimal format	degrees
longDeg ← LONG_DEG	Int	Glide Slope Transmitter Antenna Longitude Degrees	degrees
longMin ← LONG_MIN	Int	Glide Slope Transmitter Antenna Longitude Minutes	minutes
longSec ← LONG_SEC	Float	Glide Slope Transmitter Antenna Longitude Seconds	seconds
longHemis ← LONG_HEMIS	LongHemis	Glide Slope Transmitter Antenna Longitude Hemisphere		E — East W — West
longDecimal ← LONG_DECIMAL	Float	Glide Slope Transmitter Antenna Longitude in decimal format	degrees
latLongSourceCode ← LAT_LONG_SOURCE_CODE	LatLongSourceCode	Code indicating source of Latitude/Longitude information		16 values A — Air Force C — Coast Guard D — Canadian AIRAC F — FAA FS — Tech Ops (AFS-530) G — NOS (Historical) K — NGS M — DOD (NGA) N — US Navy O — Owner P — NOS Photo Survey (Historical) Q — Quad Plot (Historical) R — Army S — SIAP T — 3rd Party Survey Z — Surveyed
siteElevation ← SITE_ELEVATION	Float	Site Elevation of Glide Slope Transmitter Antenna in tenths of a foot MSL	tenths of feet MSL
gSTypeCode ← G_S_TYPE_CODE	GSTypeCode	Glide Slope Class/Type code		GS — Glide Slope - Standard Glide Slope GD — Glide Slope/DME - Glide Slope with Distance Measuring Equipment
gSAngle ← G_S_ANGLE	Float	Glide Slope Angle in degrees and hundredths of a degree	degrees
gSFreq ← G_S_FREQ	Float	Glide Slope Transmission Frequency	MHz