Definition
A specified route designed for channeling the flow of traffic as necessary for the provision of air traffic services. The term ATS Route is a generic term that includes Victor airways, jet routes, area navigation (RNAV) routes, and arrival and departure routes. An ATS route is defined by route specifications which may include an ATS route designator, the path to or from significant points, distance between significant points, reporting requirements, and the lowest safe altitude as determined by the appropriate ATS authority.
Plain English
An ATS Route is an officially published path through the sky that aircraft follow so air traffic controllers can manage traffic in an organized way. It is a general label that covers several specific kinds of routes, including low-altitude airways, high-altitude jet routes, GPS-based routes, and the standard paths used for arrivals and departures.
Context Anchor
Seen in instrument flight planning, departure procedure discussions, clearances, and charted route descriptions when a flight is being connected from one part of the system to another.
Derivation
ATS stands for Air Traffic Service. 'Route' comes from the Old French 'rute', meaning a beaten path or way. Together, an ATS Route is simply a beaten path through the sky that the air traffic system has organized and named so everyone uses it the same way.
Why Pilots Care
Using the correct ATS route keeps the aircraft in controlled airspace, maintains separation from other traffic, and satisfies ATC clearance requirements.
Intuition Check
Do not read “route” here as just any path you choose. An ATS Route is a specified aviation route used for air traffic service, not simply a pilot’s personal shortcut.
Example Sentence 1
The pilot reviewed the en route chart and selected an ATS route that connected the departure airport to the destination at an appropriate altitude.
Example Sentence 2
During preflight, the dispatcher confirmed the filed ATS route matched the one assigned by ATC.