Assertion: area navigation | /r/CapableOf | rely upon waypoint
Facets:
value: heavily
type: DEGREE
value: in aviation
type: OTHER
Source sentences:
text: In aviation, area navigation (RNAV)—a method of navigation that permits aircraft operation on any desired flight path within the coverage of station-referenced navigation aids or within the limits of the capability of self-contained aids, or a combination of these—relies heavily upon waypoints.