Discontinuity; Pilot Nav Legs - Garmin CNX 80 Pilot's Manual

Basic Operation
Flight Planning

Discontinuity

A Discontinuity is a message placed in the affected position in a flight plan indicating the GNS 480 needs to
know how you want to go between the two waypoints. Discontinuities are also inserted into the flight plan
when a standard instrument departure (SID) does not match the first waypoint in the en route section of the
flight plan or when STAR or approach end points do not match or when a STAR terminating waypoint does
not match the IAF of the approach.
Close the gap between waypoints by inserting waypoints or airways, or remove the discontinuity. You may
delete the Discontinuity by turning the Large knob to highlight it and then pressing the CLR key. Deleting a
discontinuity results in a direct path between those waypoints.
When the discontinuity is caused by an aspect of the flight plan, such as an approach, the needed action may
not be known before the flight begins. It is not necessary to remove the discontinuity, immediately. At some
point in the flight, the pilot needs to fill in the information needed to complete the flight plan and remove the
discontinuity. If the discontinuity is not removed, "disco" will be displayed on the bottom of the map display
for the next and then the active legs as a reminder to correct the flight plan. If you fly into a discontinuity, the
flight plan will be suspended and the GNS 480 will continue to track outbound on the same course until you
take action.

Pilot Nav Legs

When the "Pilot Nav" message appears on a leg in your flight plan it means the GNS 480 will not provide guid-
ance on that leg. You will have to use other flight instruments or autopilot modes to fly the given procedure leg.
Setting up IFR Flight Plan waypoints
The GNS 480 will go into Suspend mode when the current leg is a Pilot Nav leg. Pressing SUSP again
sequences you to the next leg in the procedure. If the next leg is a course-based leg, the course deviation indi-
cator will begin to center on intercept. You may engage the appropriate NAV mode on your autopilot or flight
director.
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