# 2026-15556: Groton Airspace Gets a Dimensional Trim

2026-15556, Amendment of Class D Airspace and Class E Airspace Over Groton, CT, is a Federal Register rule from Transportation Department, Federal Aviation Administration published 2026-07-31, effective 2026-10-29; PRIA reads it as touching household money (as of 2026-08-07).

- Canonical: https://policyrisk.com/federal-register/2026-15556
- As of: 2026-08-07
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-15556
- Title: Amendment of Class D Airspace and Class E Airspace Over Groton, CT
- Type: Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 91 FR 48252
- Published: 2026-07-31
- Effective: 2026-10-29
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 2120-AA66
- Last updated: 2026-08-07

## In one line

Groton Airspace Gets a Dimensional Trim

## Summary

This action amends Class D and Class E airspace over Groton, CT. This action reduces the dimensions of the Groton, CT, Class D airspace to a 4.2-mile radius of the airport, excluding that airspace within a 1-mile radius of Elizabeth Field, Fishers Island, NY. This action updates the geographic coordinates for the Groton-New London Airport, Groton, CT, and the Elizabeth Field Airport, Fishers Island, NY, in the associated airspace legal descriptions. This action also updates the airport name for the Elizabeth Field Airport in the Groton, CT Class D airspace legal description. This action also replaces "Airport/Facility Directory" in the Groton, CT Class D airspace legal description with "Chart Supplement" to comply with current FAA guidance. This action also removes the exclusions of adjacent Class E airspace areas from the Groton, CT and Fishers Island, NY Class E airspace legal descriptions to comply with current FAA guidance.

## Effects PRIA read

- Groton Class D Airspace Shrinks: cost, low. The FAA reduces the Groton-New London Airport Class D airspace from a 5-mile radius to a 4.2-mile radius, while still excluding airspace within a 1-mile radius of Elizabeth Field. This change takes effect on October 29, 2026, and could cause, at most, de minimis compliance costs or minor flight rer…
- Class E Boundary Changes at Fishers Island: cost, low. The FAA amends Class E airspace legal descriptions for Fishers Island, NY and Groton, CT by removing exclusions of adjacent Class E areas and setting new radii (Fishers Island: a 6-mile radius), effective October 29, 2026. The rule notes these changes are expected to result in, at most, de minimis…

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## Sources
- [2026-15556 on federalregister.gov](https://www.federalregister.gov/documents/2026/07/31/2026-15556/amendment-of-class-d-airspace-and-class-e-airspace-over-groton-ct)
- [2026-15556 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-07-31/pdf/2026-15556.pdf)

## Related
- [Previous: 2026-15554, Establishment of Prohibited Area P-75; New York, NY](https://policyrisk.com/federal-register/2026-15554)
- [Next: 2026-15562, Medicare Program; Prospective Payment System and Consolidated Billing for Skill…](https://policyrisk.com/federal-register/2026-15562)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-15556 (as of 2026-08-07).