Revocation of Class E Airspace; Farmington, MO; and Amendment of Class E Airspace for the following Missouri Towns; Ava, MO; Cameron, MO; Chillicothe, MO; Farmington, MO; and Festus, MO

This action removes Class E surface area airspace at Farmington Regional Airport, Farmington, MO; and modifies Class E airspace extending upward from 700 feet above the surface at Ava Bill Martin Memorial Airport, Ava, MO; Cameron Memorial Airport, Cameron, MO; Chillicothe Municipal Airport, Chillicothe, MO; Farmington Regional Airport, Farmington, MO; and Festus Memorial Airport, Festus, MO. Decommissioning of non-directional radio beacons (NDB), cancellation of NDB approaches, and implementation of area navigation (RNAV) procedures have made this action necessary for the safety and management of Instrument Flight Rules (IFR) operations at these airports.