# 2026-15675 — Federal rules taking effect: every published US final rule whose effective date is still in the future

For 2026-15675, rule is Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana; agency is Federal Aviation Administration; effective date is 2026-10-29; dates, as printed is Effective date 0901 UTC, October 29, 2026. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order JO 7400.11 and publication of conforming amendments; cfr parts amended is 14 CFR 71, recorded from its source on 2026-08-10.

- **FR document number:** 2026-15675 _(verified: appears in the quote below)_
- **Rule:** Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana _(verified: appears in the quote below)_
- **Agency:** Federal Aviation Administration _(verified: appears in the quote below)_
- **Effective date:** 2026-10-29 _(verified: appears in the quote below)_
- **DATES, as printed:** Effective date 0901 UTC, October 29, 2026. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order JO 7400.11 and publication of conforming amendments. _(verified: appears in the quote below)_
- **CFR parts amended:** 14 CFR 71 _(our reading, not quoted from the source)_
- **Published:** 2026-08-03 _(verified: appears in the quote below)_

## What the source says

> {"document_number":"2026-15675","title":"Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana","agency_names":["Transportation Department","Federal Aviation Administration"],"effective_on":"2026-10-29","dates":"Effective date 0901 UTC, October 29, 2026. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order JO 7400.11 and publication of conforming amendments.","cfr_references":[{"chapter":null,"citation_url":null,"part":"71","title":14}],"publication_date":"2026-08-03","html_url":"https://www.federalregister.gov/documents/2026/08/03/2026-15675/establishment-of-united-states-area-navigation-route-t-581-in-the-vicinity-of-missoula-montana"}

## Source

- https://www.federalregister.gov/api/v1/documents.json?per_page=1000&order=oldest&conditions%5Btype%5D%5B%5D=RULE&conditions%5Beffective_date%5D%5Bgte%5D=2026-08-11&conditions%5Beffective_date%5D%5Blte%5D=2026-12-31&fields%5B%5D=document_number&fields%5B%5D=title&fields%5B%5D=agency_names&fields%5B%5D=effective_on&fields%5B%5D=dates&fields%5B%5D=cfr_references&fields%5B%5D=publication_date&fields%5B%5D=html_url

Last verified: 2026-08-10. Review by: 2026-08-24.
Part of [Federal rules taking effect: every published US final rule whose effective date is still in the future](https://referencesource.org/federal-rules-taking-effect/).