Final rule · 2026-15556

Amendment of Class D Airspace and Class E Airspace Over Groton, CT

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.