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Display restricted or controlled airspaces and/or communication areas

1       Introduction 

Display restricted or controlled airspaces and/or communication areas 

In this topic, you learn how to display restricted airspace, controlled airspace, and areas that use different communications frequencies on the map to support your work with flights. 

We estimate that this will take 7 minutes to complete.

2       Detailed explanation 

Display restrictive and controlled airspace and flight communications areas 

Use the options on the lower half of the NAV Layers pane to display on the map both high- and low-level:
 

        Restrictive airspace

        Controlled airspace

        COM areas (areas in which distinct frequencies are used for flight communications) 

 

Since airspace in the same geographical area may be restricted at a low level, but not at a higher level, always ensure that you correctly select "High" or "Low" to be sure your display is accurate.

 


 
 
 

For information on high- and low-level airways, waypoints, holding patterns, and navaids, consult the topic Depicting high and low airways, waypoints, holding patterns, and navaids. 

This illustration depicts the low-level restricted airspace, featuring Las Islas Marias, off the Mexican coast. 

Restrictive airspace is restricted by local authorities due to safety concerns. It is one of many types of special use airspace (SUA).  

N-Tracking adds colored outlines to the map to depict these areas.

Begin this exploration of using the Restricted Airspaces option in the NAV Layers pane with the map positioned showing Mexico and its Pacific coast.

For this example, you are zoomed to the 100 nm level. 

Interaction 1

Interaction 1 Click the Layers menu button.

At the 100 nm zoom level, you cannot use the high/low level NAV Layer sliders. For customers using the metric scale for their map, the same is true -- at a zoom of 100 km, the sliders are "grayed out", which means you cannot use them.

Zoom in to an appropriate level.

Interaction 1

Interaction 1 Click Zoom in (+).

At the 20 nm (or km) zoom level, you can work with some of the sliders -- the ones that are white.

Interaction 1

Before you activate the Restrictive Airspace slider, notice that the High/Low button is set to the High position (its background is colored). 

It's important to remain aware of this setting while you work with this navigational information. Use the option that is applies for the flight you are analyzing and planning for.

Interaction 1 Click the Restrictive Airspace slider.

At the high level, the map shows relatively few restricted airspaces (outlined in pink).

Notice the islands -- Las Islas Marias, to the west, off the coast? There are no high-level  restricted airspaces in that area.

Now, add the layer showing low-level  restricted airspaces to the map.

Interaction 1

Interaction 1 Click the Low button.

You can see more restricted airspaces for the low level, and in particular, one encompassing part of Las Islas Marias. 

This example should help you appreciate the importance of ensuring that you have the correct level selected when you do planning that involves restricted airspaces.

For the next part of this exploration, we re-position the map over England.

Ensure you are zoomed in far enough to use the Restrictive Airspace, Controlled Airspace and COM Areas sliders.

Interaction 1

When the slider "knobs" are white on the NAV Layers tab, you can turn the navigational information feature on or off.

Interaction 1 Click the Restrictive Airspace slider.

For this example, look at low-level restricted airspace (a special use airspace -- SUA).

Remember from the first example you already reviewed: High-level SUAs may be different than low-level SUAs for the same geographic area. Always ensure you have the correct level turned on; otherwise, you may be viewing incorrect data.

Interaction 1

Let's take a look at this highlighted SUA.

Interaction 1 Click the highlighted restricted airspace.

In this example, only one SUA displays. If there are multiple SUAs in the area you click, the information pane provides details for those SUAs

Interaction 1

Interaction 1 Click the HUNSDON SUA list item.

N-Tracking highlights the selected SUA in orange and the information pane on the right provides more details.

Interaction 1

Interaction 1 Click the Close button.

Interaction 1

Next, let's review how you can use the Controlled Airspace layer to add this type of navigational information to the map. 

Deactivate the Restrictive Airspace slider.

Interaction 1 Click the Restrictive Airspace slider.

Interaction 1

Interaction 1 Click the Controlled Airspace slider.

This image, from The Airport Pilots Forum and Resource shows the relation between airways and control areas (CTAs). 

 

Activate the Controlled Airspace option to view the boundaries of different types of airspace.

You can find out more about each airspace by clicking on an area.

Interaction 1

Interaction 1 Click within the highlighted area.

The information pane shows two airspaces. You can select either one to review more detailed information. For this example, click the class C control area.

Interaction 1

Interaction 1 Click the CTA Class C list item.

N-Tracking outlines the Class C control area in orange. Let's have a look at the London Terminal control area (TMA).

Interaction 1

Interaction 1 Click TMA Class A.

Interaction 1

The added details may be relevant for your planning. Simply viewing the outline of the airspace on the map may be all you need.

Close the information pane and let's move on to the last navigational information tool -- COM (Communication) Areas. 

Interaction 1 Click the Close button.

Use the COM Areas layer to see where you may need to use different frequencies for flight communications. The operation of this layer is under development. Currently, only the area boundaries are visible -- detailed information is not available.

Interaction 1

Interaction 1 Click the COM Areas slider.

You've had an opportunity to explore adding layers of navigational information -- the outlines of restrictive or controlled airspaces and how to view areas using different frequencies for flight communications.

You've also learned the importance of being sure that you're looking at information relevant to high or low airspaces.

You're ready to move on to other topics to continue learning how to best use N-Tracking. 

 



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