Rule2026-19173
Establishment of United States Area Navigation Route T-581 in the Vicinity of Missoula, Montana
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
September 18, 2026
Effective
August 3, 2026
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
This action corrects a final rule published by the FAA in the Federal Register on August 3, 2026, establishing United States Area Navigation (RNAV) Route T-581 in the vicinity of Missoula, Montana. Specifically, this action corrects the description of the route in the regulatory text of the final rule.
Full Text
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<title>Federal Register, Volume 91 Issue 180 (Friday, September 18, 2026)</title>
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[Federal Register Volume 91, Number 180 (Friday, September 18, 2026)]
[Rules and Regulations]
[Pages 59055-59056]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-19173]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 71
[Docket No. FAA-2025-3288; Airspace Docket No. 25-ANM-158]
RIN 2120-AA66
Establishment of United States Area Navigation Route T-581 in the
Vicinity of Missoula, Montana
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; correction.
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SUMMARY: This action corrects a final rule published by the FAA in the
Federal Register on August 3, 2026, establishing United States Area
Navigation (RNAV) Route T-581 in the vicinity of Missoula, Montana.
Specifically, this action corrects the description of the route in the
regulatory text of the final rule.
DATES: The effective date of the final rule published in the Federal
Register on August 3, 2026, remains 0901 UTC, October 29, 2026. The
Director of the Federal Register approves this incorporation by
reference action under 14 CFR part 71, subject to the annual revision
of FAA Order JO 7400.11 and publication of conforming amendments.
ADDRESSES: FAA Order JO 7400.11M, Airspace Designations and Reporting
Points, and subsequent amendments can be viewed online at <a href="http://www.faa.gov/air_traffic/publications/">www.faa.gov/air_traffic/publications/</a>. You may also contact the Rules and
Regulations Group, Office of Policy, Federal Aviation Administration,
800 Independence Avenue SW, Washington DC 20591; telephone: (202) 267-
8783.
FOR FURTHER INFORMATION CONTACT: Steven Roff, Rules and Regulations
Group, Office of Policy, Federal Aviation Administration, 800
Independence Avenue SW, Washington, DC 20591; telephone: (202) 267-
8783.
SUPPLEMENTARY INFORMATION:
[[Page 59056]]
History
The FAA published a final rule in the Federal Register for Docket
No. FAA-2025-3288 (91 FR 48756; August 3, 2026), establishing RNAV
Route T-581. The legal description in that final rule for T-581
contains two route points that should not be listed in the description
due to them being a turn of less than one degree. This action corrects
these errors.
Correction to the Final Rule
Accordingly, pursuant to the authority delegated to me, the final
rule for Docket No. FAA-2025-3288, as published in the Federal Register
on August 3, 2026 (91 FR 48756; FR Doc. 2026-15675), is corrected as
follows:
0
On page 48757, in the third column, under the heading ``Paragraph 6011
United States Area Navigation Routes,'' revise the table across all
three columns to read as follows:
T-581 Missoula, MT (MSO) TO Kalispell, MT (FCA) [NEW]
Missoula, MT (MSO) VOR/DME (Lat. 46[deg]54'28.68'' N, long. 114[deg]05'01.15'' W)
Kalispell, MT (FCA) VOR/DME (Lat. 48[deg]12'50.77'' N, long. 114[deg]10'33.21'' W)
Issued in Washington, DC, on September 16, 2026.
Alex W. Nelson,
Manager, Rules and Regulations Group.
[FR Doc. 2026-19173 Filed 9-17-26; 8:45 am]
BILLING CODE 4910-13-P
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</html>Indexed from Federal Register on September 18, 2026.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.