PfrSeg

Preferred IFR Route segment records containing individual route string elements with type and geographic information

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

Ordered by ORIGIN_ID, DSTN_ID, PFR_TYPE_CODE, ROUTE_NO, SEG_VALUE, NEXT_SEG. This combination is also the unique record key. Segment sequence numbers are in multiples of five.

Example query

# Introspect the PfrSeg type in GraphiQL at https://api.nav.sortie.co/graphql
# Example shape (pair with a compatible root query field):
{
  # ...rootQuery... {
    effDate
    originId
    dstnId
    pfrTypeCode
  # }
}

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

Fields (13)

Field	Type	Description	Enum
effDate ← EFF_DATE	String	The 28 Day NASR Subscription Effective Date in format YYYY/MM/DD
originId ← ORIGIN_ID	String	Origin Facility Location Identifier. Depending on NAR Type and Direction, Origin ID is either Coastal Fix or Inland NAV Facility or Fix. References ORIGIN_ID in PFR_BASE
dstnId ← DSTN_ID	String	Destination Facility Location Identifier. Depending on NAR Type and Direction, Destination ID is either Airport, Coastal Fix or Inland NAV Facility or Fix. References DSTN_ID in PFR_BASE
pfrTypeCode ← PFR_TYPE_CODE	PfrTypeCode	Type Code of Preferred Route Description. References PFR_TYPE_CODE in PFR_BASE	7 values L — Low Altitude H — High Altitude HPD — High Altitude Preferred Direction NAR — North American Route SHD — Special High Altitude Directional SLD — Special Low Altitude Directional TEC — Tower Enroute Control
routeNo ← ROUTE_NO	RouteNo	Route Identifier Sequence Number (1-99). References ROUTE_NO in PFR_BASE	32 values 1 — Route sequence 1 2 — Route sequence 2 3 — Route sequence 3 4 — Route sequence 4 5 — Route sequence 5 6 — Route sequence 6 7 — Route sequence 7 8 — Route sequence 8 9 — Route sequence 9 10 — Route sequence 10 11 — Route sequence 11 12 — Route sequence 12 13 — Route sequence 13 14 — Route sequence 14 15 — Route sequence 15 16 — Route sequence 16 17 — Route sequence 17 18 — Route sequence 18 19 — Route sequence 19 20 — Route sequence 20 21 — Route sequence 21 22 — Route sequence 22 23 — Route sequence 23 24 — Route sequence 24 25 — Route sequence 25 26 — Route sequence 26 27 — Route sequence 27 28 — Route sequence 28 29 — Route sequence 29 30 — Route sequence 30 31 — Route sequence 31 32 — Route sequence 32
segmentSeq ← SEGMENT_SEQ	SegmentSeq	A sequencing number in multiples of five for each SEG_VALUE. Segment Values are in order adapted for each Preferred Route	18 values 5 — Sequence position 5 10 — Sequence position 10 15 — Sequence position 15 20 — Sequence position 20 25 — Sequence position 25 30 — Sequence position 30 35 — Sequence position 35 40 — Sequence position 40 45 — Sequence position 45 50 — Sequence position 50 55 — Sequence position 55 60 — Sequence position 60 65 — Sequence position 65 70 — Sequence position 70 75 — Sequence position 75 80 — Sequence position 80 85 — Sequence position 85 90 — Sequence position 90
segValue ← SEG_VALUE	String	The Segment ID Value for each element of the Route String from PFR_BASE
segType ← SEG_TYPE	SegType	The Segment Type of the Segment ID Value	7 values AIRWAY — Airway segment DP — Departure Procedure segment FIX — Fix segment FRD — Fix Radial Distance segment NAVAID — NAVAID segment RADIAL — Radial segment STAR — Standard Terminal Arrival Route segment
stateCode ← STATE_CODE	PfrSegStateCode	Two letter state ID of the Segment Values that are within the US and are Type FIX, FRD, NAVAID or RADIAL. Segment Values outside the US or Types AIRWAY, DP or STAR are NULL	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 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 NE — Nebraska NH — New Hampshire NJ — New Jersey NM — New Mexico NV — Nevada NY — New York OA — Pacific Ocean Area OG — Other Geographic Area OH — Ohio OK — Oklahoma OP — Other Pacific 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	PfrSegCountryCode	Country Code for Types FIX, FRD, NAVAID or RADIAL. Segment Value Types AIRWAY, DP or STAR are NULL	12 values AG — Antigua and Barbuda BB — Barbados BS — Bahamas CA — Canada DO — Dominican Republic GP — Guadeloupe IB — International Boundary MQ — Martinique MX — Mexico TC — Turks and Caicos Islands TT — Trinidad and Tobago US — United States
icaoRegionCode ← ICAO_REGION_CODE	PfrSegIcaoRegionCode	Two letter ICAO Region Code for FIX Segment Types only	15 values CY — Canada ICAO Region K — Contiguous United States ICAO Region K1 — United States ICAO Region 1 K2 — United States ICAO Region 2 K3 — United States ICAO Region 3 K4 — United States ICAO Region 4 K5 — United States ICAO Region 5 K6 — United States ICAO Region 6 K7 — United States ICAO Region 7 MD — Dominican Republic ICAO Region MY — Bahamas ICAO Region P — Pacific ICAO Region PA — Pacific Alaska ICAO Region TI — Caribbean ICAO Region TJ — Puerto Rico/Virgin Islands ICAO Region
navType ← NAV_TYPE	PfrSegNavType	Specific NAVAID Type for Segment Value Types NAVAID, RADIAL or FRD	DME — Distance Measuring Equipment NDB — Non-Directional Beacon TACAN — Tactical Air Navigation VOR — VHF Omnidirectional Range VOR/DME — VHF Omnidirectional Range with Distance Measuring Equipment VORTAC — VOR and TACAN collocated
nextSeg ← NEXT_SEG	String	The Segment ID Value of the element that directly follows the current Segment Value in the route string