90B hasn't been used for the previous 6 months or
longer. Collecting new almanac data takes place
automatically if the data is more than 6 months old.
This will usually take about 6 minutes but no more
than 12 minutes.
(2) The aircraft must be located so the GPS
antenna has an unobstructed view of the sky.
(3) It is very helpful for the KLN 90B to have
the correct date, time, and position. This information is
stored in the battery-backed memory of the KLN 90B
so it is not normally required to update it. If acquisition
time is not important, then it is not necessary to update
the date, time, and position. Refer to Paragraph
3-7e(6) for setting the date and time, if necessary. To
update the position:
1. Select the Setup 1 page by first
turning the left outer knob to SETUP
displaying a SET page annunciated in
the lower left segment of the display.
Turn the left inner knob until the SET
1 page is selected.
2. Press the left CRSR button to bring
the cursor on the page over the WPT
3. Use the left inner knob to enter
characters and the left outer knob to
move the cursor until the identifier for
the location is entered.
4. Press the ENT button to view the
waypoint page on the right side.
5. Press the ENT
approve the entry.
longitude of the present position can be
entered directly instead of entering a
6. Use the left outer knob to position the
cursor over CONFIRM?
7. Press the ENT button.
The groundspeed and heading fields are
not used for initialization in the aircraft. If
the KLN 90B is in the take-home mode,
entering a groundspeed will allow the KLN
90B to fly along the active flight plan (or
direct to a waypoint) starting from the
initialization waypoint. A heading may be
entered in the initial heading field while in
the take-home mode if the one offered is
not desired. If the take-home mode is
used, the KLN 90B must be initialized to
the aircraft's location when it is re-
8. Use the left knobs to select the NAV 2
page. When the KLN 90B reaches
the NAV ready status and is able to
navigate, the NAV 2 page will display
the present position. Verify the
latitude and longitude or the VOR
radial and distance displays are
Selecting Waypoints. There are five types
of waypoints: airports, VOR's, NDB's, intersections,
and supplemental. Waypoints in the published
database fall into one of the first four types. Up to 250
user defined waypoints may be created and defined as
any of the five types. There are three methods to
select a specific waypoint for viewing: enter the
waypoint identifiers in alphabetical order, or enter the
waypoint's name. If the waypoint is an airport, it may
also be selected by entering the city where the airport
(1) Selecting Waypoints By Identifier. The
most direct way of selecting a specific waypoint is to
simply enter the identifier directly on the appropriate
1. Rotate the right outer knob to select
the appropriate waypoint type page.
For the airport type waypoints, rotate
the right inner knob to select the APT
1 page if it is not already in view. The
airport identifier can be entered on
any of the eight airport pages but the
APT 1 page displays the airport name.
2. Press the right CRSR button to bring
the cursor on the screen over the first
character of the identifier. Check the
right inner knob in the in position.
3. Turn the right inner knob to select the