The NAV 5 and Super NAV 5 pages do not
airspace, or other data.
(11)It is possible to change the active waypoint
to any of the flight plan waypoints on this page. Pull
the right inner knob to the out position. This will create
a window at the bottom right corner of the display that
will initially contain the identifier of the active waypoint.
Refer to Figure 3D-18. The waypoint contained in this
window will be the default waypoint when the direct to
button is pressed. By turning the right inner knob, it is
possible to scan through the waypoints of the active
flight plan. Turning the knob clockwise will scan
through the waypoints in sequence until the end of the
counterclockwise will scan through the active flight
plan in reverse order until the beginning of the flight
plan is reached. Pushing the right inner knob in will
remove the window from the display.
Figure 3D-18. Super NAV 5 Page
(Active Waypoint Identifiers)
(12)The Super NAV 5 page can be configured
to display the VNAV status. This means the VNAV
status and advisory altitude for VNAV can be
displayed on the Super NAV 5 page. The VNAV
problem still needs to be set up on the NAV 4 page.
Advisory VNAV operation will only be
accurate if the barometric altimeter setting
is kept updated.
(a) Set up the VNAV situation from the
NAV 4 page.
(b) Turn to the Super NAV 5 page by
selecting NAV 5 on both sides of the display.
(c) Turn on the left cursor and rotate the
left outer knob counter-clockwise until the cursor is
over the third line from the bottom of the display.
(d) Rotate the left inner knob until VNAV
is displayed. Turn the left cursor off.
(e) The Super NAV 5 page will now
display the VNAV status. If the VNAV problem has not
been defined yet, V OFF will be displayed. If the time
to start VNAV operation is greater than 10 minutes, V
ARM is displayed. When the time to VNAV operation
is less than 10 minutes, the time until VNAV operation
will start will be displayed, e. g., V 4:53. If the VNAV
operation has started, a suggested altitude will be
displayed, e. g., V 4300.
Failure to keep the barometric altimeter
setting updated will result in inaccurate
special use airspace alerting.
The KLN 90Bs special use airspace alert is
only a tool to assist the pilot and should
never be relied upon as the sole means of
avoiding these areas.
Special use airspace alerting is disabled
when in the approach arm or approach
3D-11. SPECIAL USE AIRSPACE ALERT.
The KLN 90B contains the location of areas of
special use airspace. A message prompt is used to
alert proximity to special use airspace. When the
message page is viewed, it will display AIRSPACE
ALERT and the name and type of the special use
airspace. If the special use airspace is a Class B,
Class C, CTA, or TMA, the message page will include
instructions to see the APT 4 page for the primary
airport for the correct communications frequency.
The special use airspace alert feature is three-
dimensional. The areas are stored in the database
with regard to altitude when the actual altitude
limitations are charted in terms of Mean Sea Level
(MSL). Therefore, for flight above or below an area of
special use airspace, there will be no alert. If the
actual lower limit is charted in terms of an Altitude
Above Ground Level (AGL), it is stored in the KLN 90B
as all altitudes below the upper limit. If the actual
upper limit is charted in terms of AGL, it is stored in the
KLN 90B as unlimited.