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Notice of proposed rulemaking (NPRM).

This action proposes to amend Class D airspace and Class E airspace areas extending upward from 700 feet or more above the surface of the earth at Chicago/Rockford International Airport (formerly Greater Rockford Airport) in Rockford, IL. The FAA is proposing this action as the result of an airspace review caused by the decommissioning of the GILMY locator outer marker (LOM). The airport name would be updated to coincide with the FAA's aeronautical database. The GILMY LOM and Greater Rockford ILS localizer are no longer needed in the description of the Class D and E-5 airspace and will be removed. Airspace redesign is necessary for the safety and management of instrument flight rules (IFR) operations at these airports.

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