190-00607-02 Rev C
Detailed Operation
the approach chart is unloaded and the airport surface
chart is displayed. While on the ground, airport surface
charts will take priority over any loaded approach
chart.
operational considerations
When to Load a Chart
An approach chart can be loaded at any point
during the flight, including on the ground before
takeoff. Note that the approach will not be shown on
the map itself until the aircraft’s speed is above the
air/ground transition speed. The approach will be
automatically unloaded when the aircraft’s speed goes
below the air/ground transition speed.
Flying an Approach
It is important to recognize that the charts func-
tion is not intended to provide guidance information
for flying an approach. It is meant to provide basic
situational awareness for your current position relative
to the approach as a whole. Standard IFR-approved
instruments and charts MUST be used to actually
provide the navigational information required under
IFR conditions.
Approach to Surface Map Transitions
Logic is incorporated that will automatically
transition the display from an in-flight approach chart
display to a zoomed in view of the airport surface chart
upon landing. The intent is to provide a hands-free
transition from the approach phase of flight to the air-
port surface navigation phase without having to manu-
ally un-load the approach and adjust the zoom scale.
The transition logic is based solely on aircraft
ground speed.
When an approach chart is loaded and being
flown, and the aircraft ground speed drops below the
air/ground transition speed (set in the SYS Function),
it is assumed that a landing has been performed. At
this point, the loaded approach chart is automatically
unloaded and the airport surface chart will be pre-
sented on the screen showing runways, taxiways, etc.
However, if approach chart is loaded and being
flown and the aircraft crosses the missed approach
point without slowing, it is assumed that a missed
approach procedure is being performed. In this case,
the automatic transition to surface maps does not
occur and the approach is not automatically un-
loaded. See the Initial Zoom and Transition Speed
selections in the System Function.
Chart NOTAMS
Any applicable NOTAMS that apply for a given
chart are shown under the
INFO
key when that chart
is selected. The chart should be viewed for NOTAMS
before use.
Important System Limitations
Note that while on the ground and viewing
airport surface charts, the display can be oriented in
the “Track Up” mode. In this mode, the last known
GPS-based track as obtained from the external GPS
navigation system is used to orient the map. GPS track
is typically not accurate at low speeds and does not
reflect the actual heading of the aircraft at all times.
Invert Option
As with the basic maps, the chart image can be
inverted using the standard
Invert
key.
Hot Spots
Airport diagrams may show areas where extra
vigilance is recommended due to traffic congestion,
visibility constraints, or other unique circumstances.
ChartView - Chart
