WASHINGTON, Aug. 2 (TNSFR) -- The U.S. Department of Transportation Federal Aviation Administration has established U.S. Area Navigation (RNAV) Route T-581 in the vicinity of Missoula, Montana, to improve navigational flexibility, enhance safety margins for pilots and expand air traffic control operational capabilities within the National Airspace System.

The rule takes effect at 0901 UTC on October 29, 2026, and amends 14 CFR Part 71 by adding the route to FAA Order JO 7400.11 gove . . .

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