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Dossier Executive final rule 03-aug-2026 Takes effect · 29-oct-2026
Finalized regulation — legally enforceable once its effective date arrives.

Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana

Key claim: The FAA is establishing United States Area Navigation (RNAV) Route T-581 near Missoula, Montana to increase navigational flexibility, safety margins, and Air Traffic Control operational capabilities.

Abstract

(Rule · Transportation Department, Federal Aviation Administration) This action establishes United States Area Navigation (RNAV) Route T-581 in the vicinity of Missoula, Montana. The FAA is taking this action to increase navigational flexibility and safety margins for the users and to expand Air Traffic Control operational capabilities.

Why this matters

The FAA is establishing United States Area Navigation (RNAV) Route T-581 near Missoula, Montana to increase navigational flexibility, safety margins, and Air Traffic Control operational capabilities.

Source

Link

Briefing card

Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana
Stage: final rule · federal-register · 03-aug-2026

The FAA is establishing United States Area Navigation (RNAV) Route T-581 near Missoula, Montana to increase navigational flexibility, safety margins, and Air Traffic Control operational capabilities.

Cross-references (0)

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External: fedreg:2026-15675

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