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

This action establishes 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. Minor changes to the coordinates for the RIVRS, IL, Intersection and the Foristell, MO, VORTAC have been made to correct rounding errors. The FAA is taking this action to enhance safety and improve the efficient use of the navigable airspace in the St. Louis, MO, terminal area.