Two systems with different audiences
NAV CANADA's space-based ADS-B overview describes satellite receivers collecting broadcasts from equipped aircraft for air traffic services. A public map has a separate data supply chain. PocketWorld shows reports available through its configured public and community providers; it does not claim direct access to NAV CANADA's operational surveillance picture. The inference for readers is important: broad surveillance capability does not prove that a particular consumer website will display every aircraft in the same region.
Do not mistake a remote gap for no traffic
When exploring northern Canada, first ask what source and observation period the map represents. An empty view could reflect unavailable public reports, a selected filter or a different moment from the one you expected. It is not a census of the sky. Compare like with like: the same area, identifiers and observation times. If you have no observation for an aircraft, do not reconstruct a current position from a timetable or join old points with a line labelled as a measured track.
Equipment rules do not define this website's feed
NAV CANADA publishes separate ADS-B performance requirements. Those official requirements concern the aviation system, not a guarantee of public redistribution. This guide does not summarize compliance deadlines or advise an operator about equipment. For map reading, the useful distinction is simply between an aircraft's participation in a surveillance system and a website's access to reports. Treat them as separate facts until the provider documents the connection.
Compare freshness before comparing density
A dense view assembled from older reports can look more complete than a sparse view containing only recent observations. Check the time definition and filters before judging either. Retain the last available report's timestamp and keep missing route metadata separate from missing positions. If a source changes during a comparison, state that rather than presenting a difference in visible markers as growth or decline in Canadian aviation. The map's observation count is a property of the available dataset, not automatically a measure of all movements.
Use official resources for operational questions
The NAV CANADA operational guides collection provides access to official reference material. Use the appropriate aviation services when a question concerns flight planning, navigation or safety. PocketWorld's role here is educational exploration: inspecting reported aircraft, their available fields and geography. This article makes no promise of complete northern, oceanic or national coverage and does not infer why a particular aircraft is absent. “Unavailable from this public source” is a valid result.
Data sources
Official references are linked beside the explanations above. This educational guide does not provide current flight status, navigation, dispatch or safety advice.