Amendment and Establishment of Multiple Air Traffic Service Routes; Western United States

This action modifies two high altitude United States Area Navigation (RNAV) Air Traffic Service (ATS) routes (Q-13 and Q-15), establishes one high altitude RNAV ATS route (Q-174), and establishes five low altitude RNAV ATS routes (T-338, T-357, T-359, T-361, and T- 363) in the western United States. These Q and T routes facilitate the movement of aircraft to, from, and through the Las Vegas terminal area. Additionally, the routes promote operational efficiencies for users and provide connectivity to RNAV enroute procedures while enhancing capacity for adjacent airports.