# FssBase

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

**Source:** NASR table `FSS_BASE` · version `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

```graphql
# 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 available in-browser).

## Fields

| Field | Type | Description | Units | Enum |
|---|---|---|---|---|
| `effDate` | `String` | The 28 Day NASR Subscription Effective Date in format YYYY/MM/DD |  |  |
| `fssId` | `FssId` | Flight Service Station Identifier |  | `ABQ`, `ANB`, `AND`, … (75 values) |
| `name` | `String` | Flight Service Station Name |  |  |
| `updateDate` | `String` | Last date on which the record was updated, in format YYYY/MM/DD |  |  |
| `fssFacType` | `FssFacType` | Facility type of the Flight Service Station |  | `FSS`=Flight Service Station; `HUB`=FS21 HUB Station; `RADIO`=FS21 Radio Service Area |
| `voiceCall` | `String` | FSS Voice Call name used in radio communications |  |  |
| `city` | `String` | Associated city name where the FSS is located |  |  |
| `stateCode` | `FssBaseStateCode` | Associated state using standard two-letter US Post Office code abbreviation for US states and territories |  | `AK`, `AL`, `AR`, … (46 values) |
| `countryCode` | `String` | Country Post Office Code for the country where the FSS is located |  |  |
| `latDeg` | `Int` | Flight Service Station latitude degrees component | degrees |  |
| `latMin` | `Int` | Flight Service Station latitude minutes component | minutes |  |
| `latSec` | `Float` | Flight Service Station latitude seconds component | seconds |  |
| `latHemis` | `LatHemis` | Flight Service Station latitude hemisphere (N or S) |  | `N`=North; `S`=South |
| `latDecimal` | `Float` | Flight Service Station latitude in signed decimal degree format | degrees |  |
| `longDeg` | `Int` | Flight Service Station longitude degrees component | degrees |  |
| `longMin` | `Int` | Flight Service Station longitude minutes component | minutes |  |
| `longSec` | `Float` | Flight Service Station longitude seconds component | seconds |  |
| `longHemis` | `LongHemis` | Flight Service Station longitude hemisphere (E or W) |  | `E`=East; `W`=West |
| `longDecimal` | `Float` | Flight Service Station longitude in signed decimal degree format (negative values indicate West) | degrees |  |
| `oprHours` | `String` | FSS hours of operation; value '24' indicates continuous operation; other values include local time ranges and alternate FSS contact instructions when closed |  |  |
| `facStatus` | `String` | Current operational status of the FSS facility |  |  |
| `alternateFss` | `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` | `ContrFuelAvbl` | Flag indicating availability of weather radar at this FSS |  | `Y`=Weather radar available; `N`=Weather radar not available |
| `phoneNo` | `String` | Telephone number used to reach the FSS |  |  |
| `tollFreeNo` | `String` | Toll free telephone number used to reach the FSS; LC prefix indicates local call, LD prefix indicates long distance call |  |  |

## Enum values

### `fssId` (`FssId`)

| Code | Description |
|---|---|
| `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 |

### `stateCode` (`FssBaseStateCode`)

| Code | Description |
|---|---|
| `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 |

## Column provenance

Every field maps 1:1 to a column in the `FSS_BASE` table of `nasr.db`. Original FAA column names:

| GraphQL field | SQLite column |
|---|---|
| `effDate` | `EFF_DATE` |
| `fssId` | `FSS_ID` |
| `name` | `NAME` |
| `updateDate` | `UPDATE_DATE` |
| `fssFacType` | `FSS_FAC_TYPE` |
| `voiceCall` | `VOICE_CALL` |
| `city` | `CITY` |
| `stateCode` | `STATE_CODE` |
| `countryCode` | `COUNTRY_CODE` |
| `latDeg` | `LAT_DEG` |
| `latMin` | `LAT_MIN` |
| `latSec` | `LAT_SEC` |
| `latHemis` | `LAT_HEMIS` |
| `latDecimal` | `LAT_DECIMAL` |
| `longDeg` | `LONG_DEG` |
| `longMin` | `LONG_MIN` |
| `longSec` | `LONG_SEC` |
| `longHemis` | `LONG_HEMIS` |
| `longDecimal` | `LONG_DECIMAL` |
| `oprHours` | `OPR_HOURS` |
| `facStatus` | `FAC_STATUS` |
| `alternateFss` | `ALTERNATE_FSS` |
| `weaRadarFlag` | `WEA_RADAR_FLAG` |
| `phoneNo` | `PHONE_NO` |
| `tollFreeNo` | `TOLL_FREE_NO` |