# 2025-10422: Dover Airspace Gets Boundary Changes and an Old Zone Removed

2025-10422, Amendment of Class D and Class E5 Airspace; Revocation of Class E4 Airspace Dover, DE, is a Federal Register proposed rule from Transportation Department, Federal Aviation Administration published 2025-06-10, effective These updates won’t cost anyone extra and will kick in once finalized.; PRIA reads it as touching household money (as of 2026-10-29).

- Canonical: https://policyrisk.com/federal-register/2025-10422
- As of: 2026-10-29
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-10422
- Title: Amendment of Class D and Class E5 Airspace; Revocation of Class E4 Airspace Dover, DE
- Type: Proposed Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 90 FR 24360
- Published: 2025-06-10
- Effective: These updates won’t cost anyone extra and will kick in once finalized.
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 2120-AA66
- Last updated: 2026-10-29

## In one line

Dover Airspace Gets Boundary Changes and an Old Zone Removed

## Summary

The FAA wants to update the airspace rules around Dover Air Force Base, Delaware, to make flying safer and clearer for pilots using instruments. They’re changing some airspace boundaries, removing outdated zones, and updating location info for Dover’s airports and navigation aids. If you have thoughts, speak up by July 25, 2025—no costs or delays expected for the public.

## Abstract

This action proposes to amend Class D airspace at Dover Air Force Base (AFB) due to the current designated airspace not properly containing instrument flight rule operations. Additionally, this action proposes to establish Class E surface airspace and to revoke Class E surface extension airspace extending upward from the surface above Dover AFB, Dover, DE, due to the airspace no longer meeting the specifications of its current designation. This action also proposes to amend the boundaries of Class E airspace extending upward from 700ft that no longer meets the requirements for its specific designation due to the amendment or cancellation of Standard Instrument Approach Procedures. This action would also update the coordinates for Dover AFB, Dover, DE, Delaware Airpark, Dover, DE, and the Dover TACAN.

## Effects PRIA read

- Dover Class D expanded to 4.9 miles: benefit, low. Pilots operating at or near Dover Air Force Base will see the Class D airspace increased from a 4.6-mile radius to a 4.9-mile radius, covering surface up to and including 2,500 feet mean sea level (MSL). The change is intended to better contain instrument flight rule (IFR) operations and improve sa…
- Class E surface and 700-ft airspace reconfigured: benefit, low. The FAA proposes to establish Class E surface airspace within a 4.9-mile radius of Dover AFB that will be effective when the control tower is closed, revoke specific Class E surface extensions that run 2.7 miles each side of the Dover TACAN 177°, 013°, and 133° radials (from the 4.6-mile radius to…

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## Sources
- [2025-10422 on federalregister.gov](https://www.federalregister.gov/documents/2025/06/10/2025-10422/amendment-of-class-d-and-class-e5-airspace-revocation-of-class-e4-airspace-dover-de)
- [2025-10422 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-06-10/pdf/2025-10422.pdf)

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- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-10422 (as of 2026-10-29).