BendixKing SKYMAP IIIC - Manual (Page 89)

DETAILED OPERATION
If whilst en-route to a destination you decide that you would like to approach that
destination point from an angle other than that displayed on the CDI by the desired track
ring, you can alter the desired track setting by pushing the INC OBS (increment OBS) or
DEC OBS (decrement OBS) Keys.
This has the effect of rotating your desired track ring and hence rotating the desired track
line on the map screen using the destination point as a pivot. For example if you were
approaching an airport from the south west on an inbound heading of 070° but the runway
in use at that airport was 09, it may be desirable to approach the airport on a heading of
090° so that you were lined up for the approach.
By pressing the INC OBS Key you would increment the desired track setting from 070° to
090°. The CDI would then show a fly left indication because you would be off track to the
right from your new track line. By turning left it would then be possible to intercept the new
track line then fly straight into the airport on the new approach heading.
If the joystick is touched, the display will immediately revert to Map format (either small or
large text as selected) to allow full use of map graphics. When the joystick is reset,
Screen 47B will be reinstated. When flying with the CDI selected, WPT ALERT messages
and other warnings will be displayed in the CDI area.
In this mode, the small CDI window will show the numeric cross track error, unless it has
been selected to OFF in Screen 23 NAV Mode Customisation Screen.
DETAILE
D
OPE
RATION
Rev 9 Jul 2006 3-46 Skymap/Tracker IIIC Pilot's Guide