Establishment of Low Altitude Area Navigation Routes (T-Routes); Sacramento and San Francisco, CA

This action establishes four low altitude Area Navigation (RNAV) T-routes, designated T-257, T-259, T-261 and T-263, in the Sacramento and San Francisco, CA, terminal areas. T-routes are low altitude Air Traffic Service (ATS) routes, based on RNAV, for use by aircraft having instrument flight rules (IFR)-approved Global Positioning System (GPS)/Global Navigation Satellite System (GNSS) equipment. The FAA is taking this action to enhance safety and improve the efficient use of the navigable airspace in the Sacramento and San Francisco, CA, terminal areas.