FssBase

Base information for FAA Flight Service Stations including location, contact, and operational details

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

Replaces the legacy FSS.txt Subscriber File. FSS Frequency data moved to FRQ.csv. All US FSS are FAA owned and operated so owner/operator info is omitted. Ordered by FSS_ID (which is also the unique record key).

Example query

# Introspect the FssBase type in GraphiQL at https://api.nav.sortie.co/graphql
# Example shape (pair with a compatible root query field):
{
  # ...rootQuery... {
    effDate
    fssId
    name
    updateDate
  # }
}

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

Fields (25)

Field	Type	Description	Units	Enum
effDate ← EFF_DATE	String	The 28 Day NASR Subscription Effective Date in format YYYY/MM/DD
fssId ← FSS_ID	FssId	Flight Service Station Identifier		75 values ABQ — Albuquerque ANB — Anniston AND — Anderson AOO — Altoona BDR — Bridgeport BGR — Bangor BNA — Nashville BOI — Boise BRW — Barrow BTV — Burlington BUF — Buffalo CDB — Cold Bay CDC — Cedar City CLE — Cleveland COU — Columbia CPR — Casper CXO — Montgomery County DAY — Dayton DCA — Washington DEN — Denver DLG — Dillingham DRI — De Ridder EKN — Elkins ENA — Kenai FAI — Fairbanks FOD — Fort Dodge FTW — Fort Worth GFK — Grand Forks GNV — Gainesville GRB — Green Bay GTF — Great Falls GWO — Greenwood HHR — Hawthorne HNL — Honolulu HOM — Homer HON — Huron HUF — Terre Haute ICT — Wichita IKK — Kankakee ILI — Iliamna IPT — Williamsport ISP — New York JBR — Jonesboro JNU — Juneau KTN — Ketchikan LAN — Lansing LOU — Louisville MCG — McGrath MCN — Macon MIA — Miami MIV — Millville MKL — Jackson MLC — McAlester MMV — McMinnville OAK — Oakland OLU — Columbus OME — Nome ORT — Northway OTZ — Kotzebue PAQ — Palmer PIE — Saint Petersburg PNM — Princeton PRC — Prescott RAL — Riverside RDU — Raleigh RIU — Rancho Murieta RNO — Reno SAN — San Diego SCC — Deadhorse SEA — Seattle SIT — Sitka SJT — San Angelo SJU — San Juan STL — Saint Louis TKA — Talkeetna
name ← NAME	String	Flight Service Station Name
updateDate ← UPDATE_DATE	String	Last date on which the record was updated, in format YYYY/MM/DD
fssFacType ← FSS_FAC_TYPE	FssFacType	Facility type of the Flight Service Station		FSS — Flight Service Station HUB — FS21 HUB Station RADIO — FS21 Radio Service Area
voiceCall ← VOICE_CALL	String	FSS Voice Call name used in radio communications
city ← CITY	String	Associated city name where the FSS is located
stateCode ← STATE_CODE	FssBaseStateCode	Associated state using standard two-letter US Post Office code abbreviation for US states and territories		46 values AK — Alaska AL — Alabama AR — Arkansas AZ — Arizona CA — California CO — Colorado CT — Connecticut DC — District of Columbia FL — Florida GA — Georgia HI — Hawaii IA — Iowa ID — Idaho IL — Illinois IN — Indiana KS — Kansas KY — Kentucky LA — Louisiana ME — Maine MI — Michigan MN — Minnesota MO — Missouri MS — Mississippi MT — Montana NC — North Carolina ND — North Dakota NE — Nebraska NJ — New Jersey NM — New Mexico NV — Nevada NY — New York OH — Ohio OK — Oklahoma OR — Oregon PA — Pennsylvania PR — Puerto Rico SC — South Carolina SD — South Dakota TN — Tennessee TX — Texas UT — Utah VT — Vermont WA — Washington WI — Wisconsin WV — West Virginia WY — Wyoming
countryCode ← COUNTRY_CODE	String	Country Post Office Code for the country where the FSS is located
latDeg ← LAT_DEG	Int	Flight Service Station latitude degrees component	degrees
latMin ← LAT_MIN	Int	Flight Service Station latitude minutes component	minutes
latSec ← LAT_SEC	Float	Flight Service Station latitude seconds component	seconds
latHemis ← LAT_HEMIS	LatHemis	Flight Service Station latitude hemisphere (N or S)		N — North S — South
latDecimal ← LAT_DECIMAL	Float	Flight Service Station latitude in signed decimal degree format	degrees
longDeg ← LONG_DEG	Int	Flight Service Station longitude degrees component	degrees
longMin ← LONG_MIN	Int	Flight Service Station longitude minutes component	minutes
longSec ← LONG_SEC	Float	Flight Service Station longitude seconds component	seconds
longHemis ← LONG_HEMIS	LongHemis	Flight Service Station longitude hemisphere (E or W)		E — East W — West
longDecimal ← LONG_DECIMAL	Float	Flight Service Station longitude in signed decimal degree format (negative values indicate West)	degrees
oprHours ← OPR_HOURS	String	FSS hours of operation; value '24' indicates continuous operation; other values include local time ranges and alternate FSS contact instructions when closed
facStatus ← FAC_STATUS	String	Current operational status of the FSS facility
alternateFss ← ALTERNATE_FSS	AlternateFss	If the record facility does not have Circuit B Teletype capable of transmitting/receiving flight plan messages, this field lists the alternate FSS identifier with that capability. References FSS_ID in FSS_BASE.		ENA — Kenai FSS FAI — Fairbanks FSS JNU — Juneau FSS
weaRadarFlag ← WEA_RADAR_FLAG	ContrFuelAvbl	Flag indicating availability of weather radar at this FSS		Y — Weather radar available N — Weather radar not available
phoneNo ← PHONE_NO	String	Telephone number used to reach the FSS
tollFreeNo ← TOLL_FREE_NO	String	Toll free telephone number used to reach the FSS; LC prefix indicates local call, LD prefix indicates long distance call