Eventide ARGUS 5000 - Page 67

PROHIBITED AREAS are depicted in solid lines.
Pictured at the right are the two prohibited areas in
Washington, DC, those covering the Capitol area and the
White House. Observe that only the Prohibited areas are
displayed, even though we're in a Class B airspace. For
this view we've turned off ALL SUAs. The Prohibited
areas remain.
228° BRG
18.9 NM
TK 550 KTS
243° 00:02:03
40 I
..-/
/
SFC
sfo mioiim l6o°te
52EHI ENR/20
14S* BRG
3.4 NM
•■ —"I
\ \
\ \
TK
120°
\ P-56A ■■■■
\J
P-56B
DCA [NIL
Q4MI|
436 KTS
00:00=28
R5°TE
ENR/5
SFO/OAKLAND AREA
Class B airspace only
The San Francisco (SFO)
Class B airspace is shown at
the left. It shows the value
of being able to turn SUAs
on and off by type. As you
may know, the Oakland,
CA, Class C airspace is
coterminous with the SFO Class B. If you're
communicating with OAK, you are by definition cleared
through Class C, and, therefore, do not have to know its
boundaries. You are, however, most emphatically NOT
cleared through the San Francisco Class B.
Prohibited Areas in
Washington, D.C.
Even with a Terminal Area
Chart it can be difficult to
determine proscribed altitudes in the area where the two
SUAs overlap. The Argus allows you to turn either (or
both) OFF. The screen at the right shows the Oakland
Class C turned ON, and the Class B off. Ideally, both
classes should be distinguishable by shape; C areas are
mostly uniform in size and are circular. As we see here,
however, both the Class B and C are quite irregular. To
make them easier to distinguish in cases like this, the
altitude restrictions are depicted differently. Note that in
the Class B screen, above, the horizontal line separating
the upper and lower boundary (e.g., 80/SFC) is thicker
than it is for the Class C screen. This shows up as being
much brighter on the Argus CRT, making it possible to
see which is which at a glance.
228° BRG TK 550 kts
18.9 NM 243° 00:02=03
«fc
SFO
w
JLL-
SFC
■Mr
5FC
/
\
1 /
<b
SFO &JIIOIIII1 L60°TE
52EHI ENR/20
SFO/OAKLAND AREA
Class C airspace only
July 1999 Argus 5000/7000 Ver. 5.xx Reference Manual Part#141003 59