Manual Garmin GNC 250 (page 68 of 112) (English)

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Section 5

Direct-to & Route Navigation

One of the many benefits of GPS navigation is the ability to fly directly to a way-

point or fly a chain of waypoints without using ground-based navigation aids. To take

advantage of the convenience and efficiency provided by point-to-point GPS naviga-

tion, the GNC 250 provides two basic methods of selecting a destination for your

flight: direct-to and route navigation. The direct-to function provides a fast way to

set a course to a destination waypoint from your present position. The route function

allows the pilot to create a chain of waypoints to fly in sequence.

As you pass each waypoint in the route, the GNC 250’s automatic leg sequencing

and turn anticipation features will automatically select the next waypoint as the

‘active to’ waypoint and provide smooth steering guidance around the turn. If you are

not currently navigating a particular route leg (e.g., your starting position is not a

route waypoint), the GPS will select the appropriate leg as the active route segment.

APPENDIX A

Current Messages

ROUTE TERMINOLOGY

The diagram at the right shows a basic route

consisting of five waypoints and four legs.

The waypoint you are travelling to is called the

‘active to’ waypoint, and the waypoint immediately

behind you is called the ‘active from’ waypoint. The

course line between the active from and the active to

waypoint is called the ‘active leg’.

ACTIVE LEG

EOS

KTUL

SGF

KSTL

'ACTIVE FROM' WAYPOINT

'ACTIVE TO' WAYPOINT

MAP

SECTION

DIRECT-TO

& ROUTE NAV

250 real 7/14/98 9:32 AM Page 58

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Garmin GNC 250 Manual

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