New Airport Window

Latitude of the reference point for the airport.   If you have published information then you should use that.

Longitude of the reference point for the airport.   If you have published information then you should use that.

Altitude of the airport.   It is important to get this correct.   If it is a published altitude then you should use that otherwise you will need to establish the altitude at this point in FSX.   To do this you need a small program called TCalcX.   Follow the instructions to run this program.   Load FSX and position your user aircraft at the latitude and longitude you have for the airport.   Read the altitude from TCalcX.   It is important not to use the altitude given on the user aircraft altimeter because this is taken from the underside of the aircraft and is thus above ground.   This is a common way to start with problems!   It is also important to remember that it is not easy to change the altitude of an airport once you save the new airport.

If you have a published value for magnetic variation then uncheck Auto Set Mag Var and enter the value.   If you do not have a value then leave the check box ticked.   Airport Design Editor will try and establish the magnetic variation at the new airport location.   It does this by searching its databases for the nearest navigational element to that location and uses the magnetic variation associated with that.

The code that identifies the airport.   You need to use something that has not already been used otherwise you will create a series of undesirable consequences.   The maximum length of the identifier is four characters.

Enter the country where the airport is located

This generally applies only to the US, Canada and Australia.   You do not need to enter anything here but if the airport is located in one of these countries then enter the appropriate name.

The nearest Town or City to the airport location

The name of the airport - for example Johnson Field.

This value is used to determine the levels of AI traffic at the airport.   Unless you a good reason to change it and understand the effects of doing so then leave it at 0.7

The Bgl Compiler makes some checks to see whether there are any elements of the airport that are placed too far away.   It is possible that a mistake was made in the coordinates of something.   The Test Radius determines how far an element can be from the Airport Reference Point before the compiler issues a warning.   It is important to realize that these are warnings.   The airport will still compile.   Unless you have a good reason to change things then leave it at the default value shown by ADE.

Saves the information and displays the new airport

Cancels the creation of the new airport.