International Air Traffic Service Route
|Term||International Air Traffic Service Route|
An indication that the route is part of the regional network of Air Traffic Service (ATS) routes, as defined by the ICAO regional Air Navigation Plan (ANP).
Aeronautical Information Feature Data Dictionary (AIFDD)
ICAO's official definition for "ATS route":
A specified route designed for channelling the flow of traffic as necessary for the provision of air traffic services.
Note 1.— The term 'ATS route' is used to mean variously, airway, advisory route, controlled or uncontrolled route, arrival or departure route, etc.
Note 2.— An ATS route is defined by route specifications which include an ATS route designator, the track to or from significant points (waypoints), distance between significant points, reporting requirements and, as determined by the appropriate ATS authority, the lowest safe altitude
(source: ICAO ANNEX 2 Rules of the Air 2005)