A Canadian radio beacon is gone, so a US air route is gone too

The US Federal Aviation Administration has removed a specific air route, called Amber 16, from its maps. This happened because a radio beacon in British Columbia, Canada, that pilots used to navigate this route has been shut down.

Airways are like invisible highways in the sky that pilots follow. When a ground-based navigation aid, like a radio beacon, is decommissioned, the airways that relied on it become unusable. This means pilots will need to use different routes or rely more on satellite navigation systems.