Honeywell BENDIX/KING KLN 94, Pilot'S Manual

Page: 128 / 284

4.2.2. TURN ANTICIPATION AND WAYPOINT ALERTING
Prior to reaching a waypoint in the active flight
plan, the KLN 94 will provide navigation along a
curved path segment to ensure a smooth transition
between two adjacent legs in the flight plan. That
is, the CDI or HSI left/right deviation will be refer-
enced to the dashed line in figure 4-33. This
feature is called turn anticipation. The transition
course is based upon the aircraft’s actual ground-
speed and the amount of course angle change
between the two legs. The KLN 94 automatically
sequences to the next leg after passing the mid-
point in the transition segment.
Approximately 20 seconds prior to the beginning of
turn anticipation, the
WPT (waypoint
alert) annunciator starts flashing in
the upper right section of the screen.
In addition, the arrow preceding the
active waypoint identifier will begin
flashing on the FPL 0 page and on
any Navigation page or waypoint
page displaying the active waypoint
identifier (figures 4-34 and 4-35).
This is called “waypoint alerting”. If
an external waypoint alert annuncia-
tor is mounted in the aircraft, this
annunciator will begin flashing at the
same time.
To utilize the turn anticipation feature, start the turn transition to the next
leg in the flight plan at the very beginning of turn anticipation. This occurs
when the waypoint alert annunciator stops flashing and goes on steady.
At this time, the KLN 94 will notify you with a message on the Message
page of the new desired track to select on your HSI or CDI.
Adj Nav Crs to 123°
A message will not be given if the change in desired track (course
change) is less than 5°.
The desired track ( DTK ), displayed in the middle of the left side of the
screen, also changes to the value for the next leg at the beginning of turn
anticipation. Turn anticipation becomes inactive when transition to the
next leg has been made.
Chapter 4 Flight Plan Operation
4-10
WPT 1
WPT 2
WPT 3
Figure 4-33
Figure 4-34
Figure 4-35