Bendix Commercial Vehicle Systems Bendix/King Global Positioning System KLN 35A - Manual (Page 130)

the KLN 35A. If the CDI or HSI has five dots left and right of the
center position, then each dot represents one nautical mile of
deviation.
2. Navigation is provided along the great circle path between two
waypoints. As you probably know, great circle navigation is the
shortest distance between two points located on the earth's
surface. In the case of Direct To operation, the "from" waypoint
is not displayed but it is the point where Direct To operation was
initiated. The course to fly while in this mode is referred to as the
desired track (Dtk). The desired track is displayed on the NAV 1
page. To fly a great circle course between two points, the
desired track may be constantly changing. A good way to
illustrate this concept is with a world globe and a piece of string.
You can determine the great circle path between Denver,
Colorado and Manila, Philippines by stretching the string over the
globe between these two points. Notice that you would start the
flight with a northwesterly desired track, which gradually
becomes due westerly, and finally southwesterly by the time you
reach Manila. Of course, your trips with the KLN 35A will be
substantially shorter and the desired track will probably change
only a few degrees.
3. Automatic waypoint sequencing is provided during flight plan
operation. As you reach a waypoint in your flight plan, the next
leg of the flight plan automatically becomes active.
4. Turn anticipation may be utilized in flight plan operation as
described in
section 4.2.2 .
4.5.3. THE EN ROUTE-OBS MODE
The following are characteristics of the En Route-OBS mode.
1. (Same as item 1 for En Route-Leg mode) The course deviation
indicator (CDI) sensitivity is plus and minus five nautical miles,
full scale. This applies to the CDI on the NAV 1 page as well as
any external CDIs or HSIs interfaced to the KLN 35A. If the CDI
or HSI has five dots left and right of the center position, then
each dot represents one nautical mile of deviation.
2. The course is defined by the active waypoint and the selected
magnetic course. A course "to" or "from" the active waypoint
may be selected.
3. There is no automatic leg sequencing or turn anticipation.
KLN 35A Pilot’s Guide Advanced GPS Operation
4-27 Effective Date 5/95 006-08791-0000 Rev 0
Advanced GPS Operation
Chapter 4