Garmin CNX 80 Pilot's Manual page 78

Basic Operation
Flight Planning
Leg Types Flight Plan Page Active From/To/Next Waypoints Description
(PILOT NAV) The course to a radial leg defines a specific
course to be flown from the position at which the leg is initi-
ated and a VOR radial at which the leg terminates. The VOR
radial is defined by both the VOR identifier and the radial
number. The pilot will have to maintain the desired course
manually and initiate sequencing manually upon approaching
the specified radial. This can be easily accomplished using the
Course to a VOR Radial
VOR receiver.
The constant radius arc leg is similar to an arc to a fix leg. This
leg can occur at any location and will define an arced path
between two other legs. Also, unlike the arc to a fix leg, there
should be no separate turn required at the beginning or end of
this type of leg. You may fly this leg keeping the CDI centered
as you fly the curved path.
Constant Radius Arc
The track to a fix leg is the most commonly used leg type for
GPS navigation. It defines a geodesic (or great circle) path from
the previous database fix to the next database fix.
Track to a Fix
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