Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana
other · Rule · Final rule. · Published 2026-08-03 · Effective 2026-10-29 · 91 FR 48756
Document
Document number
2026-15675
Federal Register citation
91 FR 48756
Type
Rule
Action
Final rule.
Category
other
Publication date
2026-08-03
Effective date
2026-10-29
FAA docket
Docket No. FAA-2025-3288
Abstract
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.