Definition
A published system of fixed routes used for flights crossing the polar regions, designed to provide an organized flow of traffic between North America, Europe, and Asia at high latitudes where conventional airway and oceanic track structures are limited.
Plain English
A set of pre-planned flight paths over the polar regions that aircraft follow when flying very far north, so traffic stays organized in an area where normal route networks don't extend.
Context Anchor
Seen in flight planning, oceanic and remote-area operations, and air traffic route discussions for polar flights.
Derivation
Polar refers to the Earth's polar regions (high latitudes near the North Pole). Track means a defined path of flight. Structure indicates an organized system of these paths. Together: a structured network of flight paths through polar airspace.
Why Pilots Care
Using the PTS reduces fuel burn and ensures proper air traffic control separation in areas with limited radar coverage.
Intuition Check
Do not read “track” here as a railroad track or a short ground path. In this context, a track is the planned path an aircraft follows across the Earth.
Example Sentence 1
The dispatcher filed the flight from New York to Hong Kong on a route within the Polar Track Structure to take advantage of favorable winds.
Example Sentence 2
During the polar crossing, the crew monitored position reports along the assigned track in the PTS.