Yes it will!

For this you will need to grab the FSX manual installation plugin file and install it manually. Other than that, it works just like FSX.

Here's a brief how-to on how to make it work:

1) Install or have Prepar3D (goes without saying)

2) Download the AirTrack-FSX-v1.4-gauge.zip file from the downloads section of this web site. Open it.

3) Copy the airtrack.gau file to the gauges sub-directory of the main Prepar3D folder

4) On the "gauges" directory of the Prepar3D folder there should be a file called missionpanels.cfg ; open it with Notepad

5) Below the line that says Window09=Countdown add a new line with:

Window10=AirTrack

6) At the end of the file add the following lines:

[Window10]
size_mm=10, 10
window_pos=0.01, 0.01
background_color=0,0,0
ident=10099
visible=1
update_rate=10
gauge00=airtrackFSX!AirTrack, 0, 0

7) Save the file; this might be a bit tricky due to permissions but it's doable; I had to save it on the desktop and move it back, overwriting the original file.

And that's it; launch Prepar3D and you should see a small white square on the top-left corner of the screen when you launch the default plane; on AirTrack you should see an entry in data sources saying: "FSX on X.X.X.X"; tap on it to connect to P3D.

Tested on Windows 7 - 64 bits.

If this doesn't work for you, it might be something else; check your plane files (you may need to add the above to specific panel.cfg files or so) and your connectivity, anti-viruses, firewalls, etc.

If still having troubles, don't hesitate to contact support.
joao @ airtrack

############### UPDATE FOR Prepar3D v4 (64 BITS) ###############

With version 4 and above, P3D became 64 bits and the old FSX plugin / gauge stopped working as it was compiled for 32 bits.

We've just successfully compiled the old code for 64 bits and tested it on the latest P3D v4.1 and are pleased to say, it works!!!

The procedure is the same as the above except the gauge file is another one. We've also had to use Window14, the next available number.

Grab the 64 bit gauge file AirTrack-P3D-64bits-v1.6-gauge.zip from: http://haversine.com/airtrack/downloads

And install as above; don't forget to switch the view to Cockpit / Cockpit once to launch the gauge.

If it still fails, try running P3D as Administrator (to possibly gain rights to open the UDP socket).

fun flights,
joao @ haversine