Proposed Establishment of Low Altitude Area Navigation Routes (T-Routes); St. Louis, MO

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This action proposes to establish two low altitude Area Navigation (RNAV) routes, designated T-251 and T-272, in the St. Louis, MO, terminal area. T-routes are low altitude Air Traffic Service routes, based on RNAV, for use by aircraft that have instrument flight rules (IFR) approved Global Positioning System (GPS)/Global Navigation Satellite System (GNSS) equipment. The FAA is proposing this action to enhance safety and improve the efficient use of the navigable airspace in the St. Louis, MO, terminal area.