MtrBase

Base Military Training Route (MTR) records containing route identification, associated FSSs, and times of use

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

Ordered by ROUTE_TYPE_CODE, ROUTE_ID. The ordered-by list is also the unique record key.

Example query

# Introspect the MtrBase type in GraphiQL at https://api.nav.sortie.co/graphql
# Example shape (pair with a compatible root query field):
{
  # ...rootQuery... {
    effDate
    routeTypeCode
    routeId
    artcc
  # }
}

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

Fields (6)

Field	Type	Description	Units	Enum
effDate ← EFF_DATE	String	The 28 Day NASR Subscription Effective Date in format YYYY/MM/DD
routeTypeCode ← ROUTE_TYPE_CODE	RouteTypeCode	MTR Type Code indicating whether the route is IFR or VFR		IR — IFR VR — VFR
routeId ← ROUTE_ID	String	Route Identifier. Along with ROUTE_TYPE_CODE creates a unique MTR identifier
artcc ← ARTCC	String	List of ARTCC Idents that the MTR traverses. Multiple ARTCCs separated by spaces when route crosses multiple centers
fss ← FSS	String	All Flight Service Station (FSS) Idents within 150 nautical miles of the route. Multiple FSS idents separated by spaces	nautical miles
timeOfUse ← TIME_OF_USE	String	Times of Use text information describing when the MTR is active