Revision of Class E Airspace, San Diego, North Island NAS, CA

This action will amend the effective hours of the Class E airspace extension for San Diego, North Island Naval Air Station, (NZY) Halsey Field, CA. In April of 1998 the U.S. Navy reduced the hours of operation of the Airport Traffic Control Tower (ATCT) at NZY. A separate airspace docket has been published in the Federal Register amending the effective hours of the NZY Class D airspace surface area. The Class E airspace extension operates in conjunction with the Class D airspace surface area. The reduction of the ATCT hours of operation has made this action necessary. The intended effect of this action is to modify the effective hours of the NZY Class E airspace extension in the legal description of the controlled airspace. This action does not involve a change in the dimensions or operating requirements of that airspace containing Instrument Flight Rules (IFR) operations at NZY.