Proposes RNAV Routes T-583 and T-585 in Texas

Proposed Rule

Establishment of United States Area Navigation Routes T-583 and T-585 in Texas

A Proposed Rule by the Federal Aviation Administration on 04/23/2026

• This document has a comment period that ends in 46 days.
  (06/08/2026) View Comment Instructions

• PDF

• Document Details

• Document Dates

- Table of Contents

• Public Comments
• Regulations.gov Data

- Sharing

• Print
• Other Formats
• Public Inspection Published Document: 2026-07973 (91 FR 21749) Document Headings ###### Department of Transportation

Federal Aviation Administration

1. 14 CFR Part 71
2. [Docket No. FAA-2026-4008; Airspace Docket No. 26-ASW-2]
3. RIN 2120-AA66

AGENCY:

Federal Aviation Administration (FAA), DOT.

ACTION:

Notice of proposed rulemaking (NPRM).

SUMMARY:

This action proposes to establish United States Area Navigation (RNAV) Routes T-583 and T-585 in Texas. The FAA is proposing this action in support of new air traffic procedures scheduled for implementation at Austin-Bergstrom International Airport (AUS).

DATES:

Comments must be received on or before June 8, 2026.

ADDRESSES:

Send comments identified by FAA Docket No. FAA-2026-4008 and Airspace Docket No. 26-ASW-2 using any of the following methods:

• Federal eRulemaking Portal: Go to www.regulations.gov and follow the online instructions for sending your comments electronically.

• Mail: Send comments to Docket Operations, M-30; U.S. Department of ( printed page 21750) Transportation, 1200 New Jersey Avenue SE, Room W12-140, West Building Ground Floor, Washington, DC 20590-0001.

• Hand Delivery or Courier: Take comments to Docket Operations in Room W12-140 of the West Building Ground Floor at 1200 New Jersey Avenue SE, Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.

• Fax: Fax comments to Docket Operations at (202) 493-2251.

Docket: Background documents or comments received may be read at www.regulations.gov at any time. Follow the online instructions for accessing the docket or go to the Docket Operations in Room W12-140 of the West Building Ground Floor at 1200 New Jersey Avenue SE, Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.

FAA Order JO 7400.11K, Airspace Designations and Reporting Points, and subsequent amendments can be viewed online at www.faa.gov/​air_​traffic/​publications/. You may also contact the Rules and Regulations Group, Policy Directorate, Federal Aviation Administration, 600 Independence Avenue SW, Washington, DC 20597; telephone: (202) 267-8783.

FOR FURTHER INFORMATION CONTACT:

Ashley Toth, Rules and Regulations Group, Policy Directorate, Federal Aviation Administration, 600 Independence Avenue SW, Washington, DC 20597; telephone: (202) 267-8783.

SUPPLEMENTARY INFORMATION:

Authority for This Rulemaking

The FAA's authority to issue rules regarding aviation safety is found in Title 49 of the United States Code. Subtitle I, Section 106 describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the agency's authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of the airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it would amend the airway structure as necessary to preserve the safe and efficient flow of air traffic within the National Airspace System.

Comments Invited

The FAA invites interested persons to participate in this rulemaking by submitting written comments, data, or views. Comments are specifically invited on the overall regulatory, aeronautical, economic, environmental, and energy-related aspects of the proposal. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. To ensure the docket does not contain duplicate comments, commenters should submit only one time if comments are filed electronically, or commenters should send only one copy of written comments if comments are filed in writing.

The FAA will file in the docket all comments it receives, as well as a report summarizing each substantive public contact with FAA personnel concerning this proposed rulemaking. Before acting on this proposal, the FAA will consider all comments it receives on or before the closing date for comments. The FAA will consider comments filed after the comment period has closed if it is possible to do so without incurring expense or delay. The FAA may change this proposal in light of the comments it receives.

Privacy: In accordance with 5 U.S.C. 553(c), DOT solicits comments from the public to better inform its rulemaking process. DOT posts these comments, without edit, including any personal information the commenter provides, to www.regulations.gov, as described in the system of records notice (DOT/ALL-14 FDMS), which can be reviewed at www.dot.gov/​privacy.

Availability of Rulemaking Documents

An electronic copy of this document may be downloaded through the internet at www.regulations.gov. Recently published rulemaking documents can also be accessed through the FAA's web page at www.faa.gov/​air_​traffic/​publications/​airspace_​amendments/.

You may review the public docket containing the proposal, any comments received and any final disposition in person in the Dockets Operations office (see ADDRESSES section for address, phone number, and hours of operations). An informal docket may also be examined during normal business hours at the office of the Central Service Center, Federal Aviation Administration, 10101 Hillwood Parkway, Fort Worth, TX 76177.

Incorporation by Reference

United States Area Navigation Routes are published in paragraph 6011 of FAA Order JO 7400.11, Airspace Designations and Reporting Points, which is incorporated by reference in 14 CFR 71.1 on an annual basis. This document proposes to amend the current version of that order, FAA Order JO 7400.11K, dated August 4, 2025, and effective September 15, 2025. These updates would be published in the next update to FAA Order JO 7400.11. FAA Order JO 7400.11K, which lists Class A, B, C, D, and E airspace areas, air traffic service routes, and reporting points, is publicly available as listed in the ADDRESSES section of this document.

Background

The FAA is proposing to establish: (1) RNAV Route T-583 that would extend between the Laredo (LRD), TX, Very High Frequency Omnidirectional Range/Tactical Air Navigation (VORTAC) and the Waco (ACT), TX, VORTAC; and (2) RNAV Route T-585 that would extend between the Corpus Christi (CRP), TX, VORTAC and the Waco, TX, VORTAC. RNAV Route T-583 would bypass Austin Terminal Radar Approach Control (TRACON) airspace on the west side, and RNAV Route T-585 would bypass Austin TRACON airspace on the east side. These routes would provide users a more direct and efficient route structure while reducing the volume of low altitude aircraft that routinely overfly the Austin Terminal area, creating potential conflicts with aircraft arriving and departing from AUS. The northern portion of both routes will assist with feeding arrival traffic into Austin TRACON airspace and will facilitate revised arrival procedures within the Austin Terminal area.

The Proposal

The FAA is proposing an amendment to 14 CFR part 71 to establish RNAV Routes T-583 and T-585 in Texas.

T-583: T-583 would extend between the Laredo (LRD), TX VORTAC and the Waco (ACT), TX VORTAC.

T-585: T-585 would extend between the Corpus Christi (CRP), TX VORTAC and the Waco (ACT), TX VORTAC.

Regulatory Notices and Analyses

The FAA has determined that this proposed regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current. It, therefore: (1) is not a “significant regulatory action” under Executive Order 12866; (2) is not a “significant rule” under DOT Order 2100.6B, “Rulemaking and Guidance Procedure” (March 10, 2025); and (3) does not warrant preparation of a regulatory evaluation as the anticipated impact is so minimal. Since this is a routine matter that will only affect air traffic ( printed page 21751) procedures and air navigation, it is certified that this proposed rule, when promulgated, will not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

Environmental Review

This proposal will be subject to an environmental analysis in accordance with FAA Order 1050.1G, “FAA National Environmental Policy Act Implementing Procedures” prior to any FAA final regulatory action.

List of Subjects in 14 CFR Part 71

• Airspace
• Incorporation by reference
• Navigation (air)

The Proposed Amendment

In consideration of the foregoing, the Federal Aviation Administration proposes to amend 14 CFR part 71 as follows:

PART 71—DESIGNATION OF CLASS A, B, C, D, AND E AIRSPACE AREAS; AIR TRAFFIC SERVICE ROUTES; AND REPORTING POINTS

1. The authority citation for 14 CFR part 71 continues to read as follows:

Authority: 49 U.S.C. 106(f), 106(g), 40103, 40113, 40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959-1963 Comp., p. 389.

§ 71.1 [Amended] 2. The incorporation by reference in 14 CFR 71.1 of FAA Order JO 7400.11K, Airspace Designations and Reporting Points, dated August 4, 2025, and effective September 15, 2025, is amended as follows:

Paragraph 6011 United States Area Navigation Routes

---

| T-583 Laredo, TX (LRD) to Waco, TX (ACT) [NEW] |
| Laredo, TX (LRD) | VORTAC | (lat. 27°28′43.45″ N, long. 099°25′03.64″ W) |
| Cotulla, TX (COT) | VORTAC | (lat. 28°27′43.26″ N, long. 099°07′06.76″ W) |
| MILET, TX | FIX | (lat. 28°43′49.68″ N, long. 098°47′52.53″ W) |
| San Antonio, TX (SAT) | VORTAC | (lat. 29°38′38.51″ N, long. 098°27′40.74″ W) |
| LICOR, TX | WP | (lat. 30°06′36.28″ N, long. 098°11′36.60″ W) |
| GAFAS, TX | WP | (lat. 30°43′08.19″ N, long. 098°02′32.52″ W) |
| VICCS, TX | WP | (lat. 31°08′19.57″ N, long. 097°22′34.43″ W) |
| Waco, TX (ACT) | VORTAC | (lat. 31°39′44.03″ N, long. 097°16′08.45″ W) |

| T-585 Corpus Christi, TX (CRP) to Waco, TX (ACT) [NEW] |
| Corpus Christi, TX (CRP) | VORTAC | (lat. 27°54′13.56″ N, long. 097°26′41.57″ W) |
| SSUNN, TX | WP | (lat. 30°02′14.13″ N, long. 097°07′51.19″ W) |
| COAST, TX | WP | (lat. 30°29′38.73″ N, long. 097°07′55.99″ W) |
| DDARK, TX | WP | (lat. 30°39′52.93″ N, long. 097°12′53.36″ W) |
* * * * * Issued in Washington, DC, on April 21, 2026.

Alex W. Nelson,

Manager, Rules and Regulations Group.

[FR Doc. 2026-07973 Filed 4-22-26; 8:45 am]

BILLING CODE 4910-13-P

Published Document: 2026-07973 (91 FR 21749)