Classification of Air Traffic Service (ATS) routes.
CFR · 2024-01-01 · US · Title 14
Unless otherwise specified, ATS routes are classified as follows: (a) In subpart A of this part: (1) Jet routes. (2) Area navigation (RNAV) routes. (b) In subpart E of this part: (1) VOR Federal airways. (2) Colored Federal airways. (i) Green Federal airways. (ii) Amber Federal airways. (iii) Red Federal airways. (iv) Blue Federal airways. (3) Area navigation (RNAV) routes.
official document · source cfr-2024 · id 14:§ 71.13