- low-level fixed RNAV route
- In low-level airspace, a prescribed RNAV (area navigation) track between specified fixes. For routes in controlled low-level airspace, the airspace extending upward from 2200 ft (6.7 km) above the surface of the earth within the following specified boundaries: (i) The primary route width is 10 miles (16 km) on each side of the center-line prescribed for such a route. (ii) The primary route boundary lines do not splay.
Aviation dictionary. 2014.
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