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Proposed Rule

Amendment of Class D and Class E Airspace and Revoke Class E Airspace; Fort Knox, KY

A Proposed Rule by the Federal Aviation Administration on 03/16/2026

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3. Document Details Published Content - Document Details Agencies Department of Transportation Federal Aviation Administration Agency/Docket Numbers Docket No. FAA-2026-3074 Airspace Docket No. 26-ASO-5 CFR 14 CFR 71 Document Citation 91 FR 12514 Document Number 2026-05097 Document Type Proposed Rule Pages 12514-12516 (3 pages) Publication Date 03/16/2026 RIN 2120-AA66 Published Content - Document Details

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• Document Details Published Content - Document Details Agencies Department of Transportation Federal Aviation Administration Agency/Docket Numbers Docket No. FAA-2026-3074 Airspace Docket No. 26-ASO-5 CFR 14 CFR 71 Document Citation 91 FR 12514 Document Number 2026-05097 Document Type Proposed Rule Pages 12514-12516 (3 pages) Publication Date 03/16/2026 RIN 2120-AA66 Published Content - Document Details
• Document Dates Published Content - Document Dates Comments Close 04/30/2026 Dates Text Comments must be received on or before April 30, 2026. Published Content - Document Dates

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  • AGENCY:
  • ACTION:
  • SUMMARY:
  • DATES:
  • ADDRESSES:
  • FOR FURTHER INFORMATION CONTACT:
  • SUPPLEMENTARY INFORMATION:
  • Authority for This Rulemaking
  • Comments Invited
  • Availability of Rulemaking Documents
  • Incorporation by Reference
  • The Proposal
  • Regulatory Notices and Analyses
  • Environmental Review
  • List of Subjects in 14 CFR Part 71
  • The Proposed Amendment
  • PART 71—DESIGNATION OF CLASS A, B, C, D, AND E AIRSPACE AREAS; AIR TRAFFIC SERVICE ROUTES; AND REPORTING POINTS
  • Paragraph 5000 Class D Airspace.
  • ASO KY D Fort Knox, KY [Amended]
  • Paragraph 6002 Class E Airspace Areas Designated as Surface Areas.
  • ASO KY E2 Fort Knox, KY [Amended]
  • Paragraph 6004 Class E Airspace Areas Designated as an Extension to a Class D or Class E Surface Area.
  • ASO KY E4 Fort Knox, KY [Removed]
  • Paragraph 6005 Class E Airspace Areas Extending Upward From 700 Feet or More Above the Surface of the Earth.
  • ASO KY E5 Fort Knox, KY [Amended] Enhanced Content - Table of Contents

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Department of Transportation

Federal Aviation Administration

1. 14 CFR Part 71
2. [Docket No. FAA-2026-3074; Airspace Docket No. 26-ASO-5]
3. RIN 2120-AA66

AGENCY:

Federal Aviation Administration (FAA), DOT.

ACTION:

Notice of proposed rulemaking (NPRM).

SUMMARY:

This action proposes to amend the Class D and Class E airspace and revoke Class E airspace at Fort Knox, KY. The FAA is proposing this action as the result of a biennial airspace review conducted due to the decommissioning of the Godman non-directional beacon (NDB). The geographic coordinates of Godman AAF (Army Air Field), Fort Knox, KY, would also be updated to coincide with the FAA's aeronautical database. This action would bring the airspace into compliance with FAA orders and support instrument flight rule (IFR) procedures and operations.

DATES:

Comments must be received on or before April 30, 2026.

ADDRESSES:

Send comments identified by FAA Docket No. FAA-2026-3074 and Airspace Docket No. 26-ASO-5 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 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 ( printed page 12515) 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 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, Office of Policy, Federal Aviation Administration, 600 Independence Avenue SW, Washington, DC 20597; telephone: (202) 267-8783.

FOR FURTHER INFORMATION CONTACT:

Jeffrey Claypool, Federal Aviation Administration, Operations Support Group, Central Service Center, 10101 Hillwood Parkway, Fort Worth, TX 76177; telephone (817) 222-5711.

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 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 Class D and Class E airspace and revoke Class E airspace at the affected airport to support IFR operations.

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 received 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-14FDMS), 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 Office (see the ADDRESSES section for the address, phone number, and hours of operations). An informal docket may also be examined during normal business hours at the Federal Aviation Administration, Air Traffic Organization, Central Service Center, Operations Support Group, 10101 Hillwood Parkway, Fort Worth, TX 76177.

Incorporation by Reference

Class D and E airspace relevant to this action are published in paragraphs 5000, 6002, 6004, and 6005 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.

The Proposal

The FAA is proposing an amendment to 14 CFR part 71 that would modify the Class D airspace, Class E surface airspace, and Class E airspace extending upward from 700 ft. above the surface, and revoke the Class E airspace designated as an extension to Class D and Class E surface areas at Fort Knox, KY, due to a biennial airspace review due to the decommissioning of the Godman NDB.

For the Godman AAF, Fort Knox, KY, Class D airspace, the proposal would: (1) increase the radius from 3.9 miles to 4.6 miles; (2) update the geographic coordinates of the airport to coincide with the FAA's aeronautical database; and (3) remove the unnecessary language, “(previously called Airport/Facility Directory)” from the airspace legal description.

For the Godman AAF Class E surface area, the proposal would: (1) increase the radius from 3.9 miles to 4.6 miles; (2) update the geographic coordinates of the airport to coincide with the FAA's aeronautical database; and (3) remove the unnecessary language, “(previously called Airport/Facility Directory)” from the airspace legal description.

For the Godman AAF Class E airspace designated as an extension to Class D and Class E surface areas, the proposal would revoke the airspace as it is no longer required.

For the Godman AAF Class E airspace extending upward from 700 ft. above the surface, the proposal would: (1) increase the radius from 6.3-miles to 7 miles; (2) remove the Godman NDB and associated extension from the airspace legal description as the NDB has been decommissioned and the extension is no longer required; and (3) update the geographic coordinates of the airport to coincide with the FAA's aeronautical database.

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 ( printed page 12516) rule” under DOT Regulatory Policies and Procedures (44 FR 11034; February 26, 1979); 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 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 5000 Class D Airspace.

---

ASO KY D Fort Knox, KY [Amended]

Godman AAF, KY

(Lat. 37°54′25″ N, long. 085°58′19″ W)

That airspace extending upward from the surface to and including 3,300 feet MSL within a 4.6-mile radius of Godman AAF. This Class D airspace area is effective during the specific dates and times established in advance by a Notice to Airmen. The effective dates and times will thereafter be continuously published in the Chart Supplement.

---

Paragraph 6002 Class E Airspace Areas Designated as Surface Areas.

---

ASO KY E2 Fort Knox, KY [Amended]

Godman AAF, KY

(Lat. 37°54′25″ N, long. 085°58′19″ W)

Within a 4.6-mile radius of Godman AAF. This Class E airspace area is effective during the specific dates and times established in advance by a Notice to Airmen. The effective dates and times will thereafter be continuously published in the Chart Supplement.

---

Paragraph 6004 Class E Airspace Areas Designated as an Extension to a Class D or Class E Surface Area.

---

ASO KY E4 Fort Knox, KY [Removed]

---

Paragraph 6005 Class E Airspace Areas Extending Upward From 700 Feet or More Above the Surface of the Earth.

---

ASO KY E5 Fort Knox, KY [Amended]

Godman AAF, KY

(Lat. 37°54′25″ N, long. 085°58′19″ W)

That airspace extending upward from 700 feet above the surface within a 7-mile radius of Godman AAF.

• * * * * Issued in Fort Worth, Texas, on March 12, 2026.

Courtney E. Johns,

Acting Manager, Operations Support Group, ATO Central Service Center.

[FR Doc. 2026-05097 Filed 3-13-26; 8:45 am]

BILLING CODE 4910-13-P

Published Document: 2026-05097 (91 FR 12514)