Bendix-commercial-vehicle-systems Bendix/King Global Positioning System KLN 35A User Manual Page 99

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Basic GPS Operation
3-64
Effective Date 5/95 006-08791-0000 Rev 0
Basic GPS Operation
Chapter 3
Only the outer lateral boundaries are stored for Class B, Class C,
CTA, and TMA airspace. These SUA areas are stored as “cylinders”
of airspace so all altitudes below the upper limit of these areas are
considered to be in the SUA.
The message prompt for a special use airspace alert will occur when
the aircraft’s position is at a point such that a projection of the air-
craft’s existing track over the ground is approximately 10 minutes
from penetrating the
outer boundary of one
of these areas. It will
also occur if the aircraft
is within approximately
two nautical miles of
one of these areas
even if the aircraft’s
projected track over
the ground won’t actu-
ally penetrate the SUA
area (figure 3-185). If
one of the SUA areas
is penetrated, another
message will state:
Inside SUA.
The SUA alert feature may be disabled (or enabled) on the Setup 7
(SET 7) page, shown in figure 3-186.
Select the SET 7 page, turn on the
cursor (B). The right inner knob is
used to choose between SUA ALERT
ENABLED and SUA ALERT DIS-
ABLED.
If the SUA alert feature has been
enabled, the KLN 35A allows you to
select a vertical buffer on the SET 7
page in order to provide an additional
layer of protection from inadvertently
entering an SUA. To select a vertical
buffer, make sure the SUA alert fea-
ture has been enabled. Turn on the
cursor (B) (figure 3-187) and then
use the right inner knob to select the
buffer (figure 3-188). The buffer may
be selected in one hundred foot incre-
ments. After the desired selection
has been made, turn the B off.
APT VOR NDB SUP ACT NAV FPL CAL SET OTH
åå.ånm SUA ALERT
åååååå ENABLED
>Leg Buffer:±01000'
CRSR
Figure 3-188
APT VOR NDB SUP ACT NAV FPL CAL SET OTH
åå.ånm SUA ALERT
åååååå ENABLED
>Leg Buffer:±00500'
CRSR
Figure 3-187
APT VOR NDB SUP ACT NAV FPL CAL SET OTH
åå.ånm SUA ALERT
åååååå DISABLED
>Leg
SET 7
Figure 3-186
10 MIN
2 MILES
Figure 3-185
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