Note: An override to the navigation will assume that the start has been done.
4.4 Critical Airspaces
Critical airspace shows a list of airspaces that are closer from the pilot's position than the distance and
altitude thresholds dened in the Airspace Settings (see Section
4.10.17
)). This list is generated when in
ight mode and is ordered by the sequence in which the airspace appears in the le used to create the
airspace. For example, if the altitude, and distance threshold is set to 200 meters then all the airspaces
that are closer from the pilot's position than 200 meters are shown on the Critical Airspaces list. A typical
list of airspace may look like Figure
4.8
. Note that the number in parentheses indicates the number of
airspace polygons loaded into the instrument.
Figure 4.8: Critical Airspace
If a critical airspace is selected by pressing ENTER key, the lower eld is populated with the airspace data
(Figure
4.9
). This list shows:
the Distance to the CTR (see Section
4.10.17
),
the Altitude which is the reference altitude for the airspace (see Section
4.10.17
),
the oor of the airspace which is the lowest altitude of the airspace,
the ceiling which is the maximum altitude of the airspace.
The list also shows the airspace status, specicity if the pilot is violating airspace, or the violation is
imminent, or if it is out of airspace. In the example of Figure
4.9
the pilot is out of the airspace. The
reference altitude is the current altitude being used for airspace calculation. Dierent reference altitudes
can be set in the Airspace settings (section 15.15 Airspace settings) and these include Altitude (barometric
altitude), GPS altitude and Flight Level (using 1013.25 mBar pressure). For more details on this see Section
4.10.17
.
29
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