Manual

5.5.4. SWITCHING FROM THE LEG MODE TO THE OBS MODE
The following mode transition occurs if the KLN 94 is in the Leg mode and
the mode is changed to the OBS mode:
1. The waypoint that was active in Leg mode prior to the mode change
remains the active waypoint in OBS mode.
2. The selected course is defined by two different methods depending
on the installation and the status of the unit.
i. If the KLN 94 is the displayed navigation source when the change is
made to OBS mode, then the selected course becomes whatever was
set on the external indicator prior to changing to the OBS mode. This
value should normally be the desired track to the active waypoint if
you had the external indicator set to the correct value prior to switch-
ing to the OBS mode.
ii. If the KLN 94 is not displayed on the external indicator, then the
selected course is chosen such that the deviation from the selected
course remains the same.
3. If the OBS value chosen by default from rule 2 above is unacceptable,
you can always define the desired course by the methods described
in section 5.5.3.
5.5.5. EFFECTS OF SWITCHING FROM OBS MODE TO LEG
MODE
The following mode transition occurs if the KLN 94 is in the OBS mode
with a TO indication and the mode is switched to the Leg mode:
1. The waypoint that was active while in the OBS mode remains the
active waypoint when the Leg mode is activated. The system does
not attempt to orient itself on a leg of the active flight plan unless the
TO/FROM indicator is indicating FROM. In the FROM case, the
KLN 94 will reorient on the active flight plan.
2. The selected course (OBS) that was active in the OBS mode prior to
switching to Leg mode becomes the desired track (DTK) in the Leg
mode, unless the mode change was made on the “from” side in which
case the KLN 94 will calculate the correct desired track for the new
leg.
3. With the exception of #2 above, the characteristics of normal Direct
To operation apply.
4. If the active waypoint was part of the active flight plan (FPL 0), the
system will revert to normal flight plan operation once the active way-
point is reached.
KLN 94 Pilot’s Guide Chapter 5 Intermediate Operation
5-17