Takes Effect

Takes effect

Federal Vehicles and travel

New air route T-581 links Missoula and Kalispell, Montana

The FAA creates area navigation route T-581 between the Missoula and Kalispell navigation beacons in western Montana, giving pilots another route and air traffic control more options.

Who it affects

Pilots flying in western Montana

When

This rule takes effect on October 29, 2026.

Official text

FR Doc. 2026-15675: Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana
On Federal Register. The official text is what counts; read it before you act.

Not legal advice. Plain-English summaries to help you find what changes and when. Not legal advice: read the official text, and ask a lawyer about your situation.

More Federal changes around this date