Rdr

Radar facility data including radar type, operating hours, and remarks for airports and TRACONs

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

Designed from a deconstruction of the legacy TWR.txt Subscriber File (TWR5 and TWR6 records). Unique record key is FACILITY_ID + COUNTRY_CODE + RADAR_NO. Ordered by FACILITY_ID, COUNTRY_CODE, RADAR_NO.

Example query

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

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

Fields (9)

Field	Type	Description	Enum
effDate ← EFF_DATE	String	The 28-day NASR Subscription Effective Date in format YYYY/MM/DD
facilityId ← FACILITY_ID	String	Location identifier; unique 3-4 character alphanumeric identifier assigned to the landing facility or TRACON
facilityType ← FACILITY_TYPE	RdrFacilityType	Type of facility associated with the radar data	AIRPORT — Airport facility TRACON — Terminal Radar Approach Control facility
stateCode ← STATE_CODE	RdrStateCode	Associated state post office code; standard two-letter abbreviation for US states and territories	54 values AK — Alaska AL — Alabama AR — Arkansas 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 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
countryCode ← COUNTRY_CODE	RdrCountryCode	Country post office code for the country in which the airport or TRACON is located; also part of the unique record key	AN — Netherlands Antilles BS — Bahamas MH — Marshall Islands US — United States
radarType ← RADAR_TYPE	RadarType	Radar type code indicating the type of radar system installed at the facility	7 values ARSR — Air Route Surveillance Radar ASR — Airport Surveillance Radar (suffix -# denotes type of ASR) ASR/PAR — Airport Surveillance Radar plus Precision Approach Radar GCA — Ground Control Approach PAR — Precision Approach Radar SECRA — Secondary Radar BCN — Beacon
radarNo ← RADAR_NO	RadarNo	Unique sequence number assigned to each radar at a facility; part of the unique record key	7 values 1 — First radar unit 2 — Second radar unit 3 — Third radar unit 4 — Fourth radar unit 5 — Fifth radar unit 6 — Sixth radar unit 7 — Seventh radar unit
radarHrs ← RADAR_HRS	String	Radar hours of operation; may include textual descriptions of scheduled hours, maintenance periods, and special conditions
remark ← REMARK	String	Remark associated with radar operations; may reference radar type, maintenance schedules, radar minima, or special operational notes