The FriendlyPanels KLN94 has two knobs and eleven buttons. The bottom left little knob is only used to turn on/off the gauge.

The outer right knob is used to select the pages group that can be displayed in the screen or to manage cursor. Inner right knob allows you moving trough pages inside a group.

The KLN 94 uses a color LCD. In normal operation, the display screen is divided into four segments. When the map page (NAV 4) is displayed the page bar is removed to maximize the height of the map. Also, in some other cases such as Direct To page the segment dividers disappear and you have a full-screen page.

The top line of segment 1 always displays distance to the active waypoint. The identifier of the active waypoint is usually displayed on the second line. In cases when the active waypoint identifier is displayed on a segment 2 page, line 2 will display the current groundspeed. The third line of segment 1 displays the desired track (DTK). The aircraft's actual track (TK) over the ground is displayed on line 4.

Segment 2 shows aeronautical information in the form of pages, as described later ahead.

Segment 3 displays specific page which type and number is shown on the page bar at the bottom of the display. Seven page types are shown on the page bar, however, only the selected page type is shown in reverse video (white characters on a blue background). In figure above, the NAV1 page is being displayed in segment 2 and is annunciated as such on the segment 3 page bar.

Segment 4 displays annunciations associated with the operation of the KLN 94. Line 1 shows the WPT (waypoint alert) annunciation when approaching the active waypoint. Line 2 shows the message prompt, a large “M”, when the KLN 94 has a message for you to view on the message page. Line 3 displays the ENR, TERM or APR. Line 4 will normally display “LEG” which is the default mode. “OBS” is displayed when the pilot has selected the OBS mode. A Line 5 will appear in map modes to show the page you're in NAV4 or NAV5

Clicking areas

1. Shows/Hide procedures page 

2. On / Off 

3. Shows/Hide message page 

4. OBS or LEG mode 

5 . Shows/Hide flight plan list 

6. Show nearest group pages 

7. Shows/Hide Direct To page 

8. Clear screen and shows super NAV1 page. Keep it pushed till it happens 

9 . Confirm options or enter data 

10 and 13 . Change page group shown. Move cursor 

11 and 12 . Change page inside a group 

14 . Shows/Hide Menu 

15. Turn on/off cursor 

16. Zoom in/out map. 

The NAV pages

When you first turn on the KL94 the display shows shortly a little presentation of the gauge, followed by a screen with some data concerning your current position. Push ENT key to accept and you'll go into NAV1 page. Use the right inner knob to move through this NAV group.

NAV1 : Segment 1 has been described above. Segment 2 displays active navigation leg in Line 1. Line 2 is a course deviation indicator (CDI) that graphically displays left and right deviation from desired course. Line 3 displays numeric crosstrack correction, the crosstrack distance (how far off course) and direction to fly to intercept the desired track. The numeric crosstrack correction distance display is especially handy when more than five nautical miles off of course. The CDI scale factor is also displayed on line 3. This is the full scale deviation. The CDI scale factor is ± 5 NM which means each dot represents 1 NM of deviation off course. Line 4 shows VNAV status (not implemented). Line 5 displays a data field which display bearing to the active waypoint ( To ). Line 5 also displays the estimated time en route (ETE) from present position to active waypoint.

NAV2 : displays the aircraft's present position: the radial and distance from a nearby VOR and latitude and longitude.

NAV3 : The Navigation 3 page shows you several important times pertaining to your flight. Line 1 : The current local time. Line 2 : The time of departure. This is the time when a valid groundspeed was first greater than 30 knots (typically during takeoff). Line 3 : The elapsed flight time, which will be the hours and minutes since the departure time. Line 4 : The estimated time en route to next waypoint. Line 5 : Estimated time of arrival (ETA) to next waypoint.

NAV4 and 5 : Segment 2 displays map, with different orientation: track or north, flight plan route and navaids.

You can select, while in NAV4 or NAV5, what navaids you want to be displayed in the map. To do this push CRSR, the MAP-DATA will appear, then use outer right knob to select the type of navaid and inner right knob to select navaid ON (displayed) or OFF (hidden). Then push CRSR again.

The Airport, Intersection, NDB and VOR pages

There are ten pages in this group: 6 APT, 2 INT, 1 VOR and 1 NDB displaying info about their respective facilities. You can use the outer and inner knob and CRSR to manage through them. Here are a few screenshots.

From these pages, anytime you highlight a frequency (using right CRSR and knob), it can be sent to the NAV COM radio or ADF clicking on ENT button.

The Nearest pages

Push NRST button to access this five pages group which displays info about their respective nearest facilities. You can use the outer and inner knob and CRSR to manage through them. Here is a couple of screenshots.

The Auxiliary pages

This pages group has three pages and shows additional information. Use the outer knob to reach them and inner knob to browse them.

AUX1 : Line 1 displays True Air Speed, Line 2 MACH speed, Line 3 tailwind speed (TWIND) or headwind speed (HWIND) and Line 4 wind directiond and speed.

AUX2 : Line 1 displays static air temperature, Line 2 total air temperature, Line 3 pressure altitud and Line 4 density altitud

AUX3 : displays fuel data: Line 1 endurance, Line 2 range, Line 3 nm per gallon for current condition and Line 4 fuel left.

The Direct To page

Push Direct To button to show this page. In segment 2 you can see and select the Facility to Direct To and its data. Use knob to manage this page and confirm with the ENT key.

The Flight Plan page

Click in the FLP button to get the Flight Plan List page. CRSR and outer knob allow you scrolling through this page. Clicking in FLP button again get out from this page to NAV1 page, whatever was the page you were in before.

The Message page

Push MSG button to show/hide message page. It dispays Airspaces Alert massages if any. A blinking MSG alert will show in segment 4 if there is a message. This blinking alert can be inhibited keeping MSG button pushed until the M letters in segment 4 change to OFF. To recover the alert mode keep pushed MSG again until M letters appear.

The Procedures page

Push PROC button to show/hide message page. CRSR and knob allow you to manage these pages.