User Guide

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To change to a page of the GPS, click on the legends along
the bottom of the screen. The current selected page is annunciat-
ed on the lower left line of the screen and by a small glowing bar
above the corresponding legend. In addition, the buttons below
the legends are also clickable. The knob on the right of the GPS
will increment or decrement the current sub-page. For instance, if
you are on the APT page, clicking left and right on the knob will
toggle between the 6 sub-pages of the APT page. Often, each sub-
page is too large to fit on a single screen. In this case, you’ll see a
plus sign beside the page number. For example, if you are looking
at an airport’s page to determine what runways are available (APT
4) and there are more than the two that’ll fit on one screen, you’d
see APT+4 to let you know that there’s more than one APT 4 page
for that airport.
The modifiable fields in the GPS are brighter than the non-
modifiable fields. To modify a field, move the mouse cursor over
the appropriate field. When the mouse is over a modifiable field,
the field will blink and be underlined. Click the left or right mouse
button to toggle through the field appropriately. When a field has
been clicked, the system will turn the cursor mode on automati-
cally to let you know you are modifying a field. Any time the cur-
sor is active, the word CRSR replaces the page name and number
in the bottom left line. Cursor mode will not change the function-
ality of the GPS knob. The CRSR mode is simply a reference that
you are modifying a field on the current page. To turn off the cur-
sor mode, click on the CRSR button or change to a different GPS
page.
Most of the GPS fields will automatically accept the
changes. If a field needs an acknowledgement of the modifica-
tion, the word ENT will begin to flash on the left side of the dis-
play. This indicates that the entry will not be completed until you
press the ENT key at the bottom of the screen, left of the knob.
The remaining controls are the keys along the bottom of the
unit. MSG is used to retrieve any messages the system has for the
pilot (annunciated by the flashing MSG indicator on the left side
of the screen, as well as a remote message annunciator in some
installations). If there’s more than one message, they’re displayed
in chronological order. Press the MSG key to display a message.
A further push on the MSG key returns you to normal operation or
toggles to the next message.
CONTROLS AND DISPLAYS
For a system with its range of capabilities and features, the
KLN-89 is not only remarkably small and light; it’s also surpris-
ingly simple to operate. While it also provides left-right guidance
to panel displays (the CDI in the Cessna, the HSI in the Pipers) and
autopilots (all three airplanes), most of the information it provides
to the pilot is presented on its gas-discharge matrix screen.
You’ll notice that the screen is divided, by a vertical line
about a third of the way in from the left, into two parts. The sec-
tion to the left of the line always displays the distance to the active
waypoint, in enhanced numbers, on its top line. The second line
is usually the identifier of the active waypoint (so you always
know where you’re going, and how far to go, regardless of what
you’re displaying on the rest of the screen). The exception is if the
right of the screen includes the waypoint identifier, in which case
you will see groundspeed on the left.
The third line generally displays the system’s navigation
mode: LEG if it’s navigating from one waypoint to another, and a
magnetic bearing if the system is in OBS mode (in which case you
can dial in the desired course to or from a waypoint, just as if it
were a VOR station). It may also flash “M” if the system needs to
get your attention to view a message (more on that in a moment),
or “ENT” if it’s waiting for you to confirm a data entry by pressing
the ENT key.
Finally, the fourth line on the left tells you “where you are”
in the system. With so much information available, and so many
possible inputs, the KLN-89’s interface is divided into various
“pages.” Actually, the master pages are more like categories, or
chapters in a book, each divided into individual sub-pages.
CURSES! FOILED AGAIN!
The way you move around among these pages, and enter
data into them, is by clicking directly on the highlighted fields,
page legends below the screen, buttons below the screen, and the
right knob.
Appendices
Appendices