Sign in to follow this  
Guest matthias

ATC IFR files

Recommended Posts

Hi to All,When you load an IFR plan where FS9 locates the file/s that ATC will use to drive the plane to destination?I found sometimes during flight that the ATC uses wrong centers and I'm wondering whether some correction it's possible to apply on those files.

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

All that data is stored in the AFD BGL files. In theory it should be possible to make new files with the BGLComp SDK, but I don't know if somebody already tried that for the airspace structure.

Share this post


Link to post
Share on other sites

There are no separate adf files except for the NVxxxx.bgl which have the NDB and VOR for a scenery area, ATxxxx.bgl which provide Waypoints and Routes. Other NAVAIDs are in the APxxxx.bglI have not seen a file that divides the world up for Centers. It has to be somewhere but I don't know if it is in the scenery files.W. Sieffert

Share this post


Link to post
Share on other sites

Seems to be the AT files. I decompiled one and here is a piece of airspace over the Netherlands I found in it:[tt][/tt]

Share this post


Link to post
Share on other sites

I used BGLXML, you can find it here in the file library.

Share this post


Link to post
Share on other sites

Always speaking about FS2004, I find only 3 files AT.bgl for each region and decompiled by BGLXML inside there is Geopol coastal boundaries.Nothing concerning ATC.Please where within FS2004 did you find this file AT.bgl with AMS ATC boundaries?

Share this post


Link to post
Share on other sites

Hi,I found three AT files in the eurnw folder. In the first of them I found the information about Amsterdam (but also other areas). In my decompiled source it follows the geopol data.Which version of BGLXML are you using? I downloaded the latest version this week (1.2 I think), maybe you have an older format that doesn't support all commands yet?

Share this post


Link to post
Share on other sites

I have the last BGLXML and now I'm able to see the ATC boundaries but I didn't find any error in the Pisa center coordinates so I can realize how and why I was asked to change with Pisa approach when I was south of Rome, very far, surely out of Pisa VHF range.Boh!

Share this post


Link to post
Share on other sites

Good morning Gentleman,I think the Logic of FS Center Boundaries depends on the borders and altitude. I think what you found is not the Boundaries of the Center. I think it was the Boundaries of the Airspace structure.I do not know on which files you find the boundaries and Frequency

Share this post


Link to post
Share on other sites

Hi Matthias,Yes, Christian Stock made a new ATC file for New Zealand. I made a new file for the Netherlands, but because there were still problems in it, it was never released.I think with the XML code it should be relative easy to define the airspace like it should be. But at this moment I haven't checked how FS then uses it, for example will the default airspace automatically be exclude or not?I hope I can do some tests on this soon and I will report when I have found some new information.

Share this post


Link to post
Share on other sites

Good day Arno,yes I meant Christian Stock I think. If you found out the structure it would be nice if you would share the tipps or thougts with us. I would like to make Berlin Radar for example use the real Sectors.In real life you have for example 9 Sectors. 6 Lower Sectors and three upper Sectors. Maybe you can define a Alitutde and Boundaries and Frequency

Share this post


Link to post
Share on other sites

Hi Matthias,As you can see in the piece of code I posted above and will repeat here (which comes from a default file), the altitudes and boundaries are defined in with the XML code. If you have the official data it should not be that hard to get it into this form.[tt][/tt]But I don't know yet how the frequency is linked to this piece of airspace. I guess it is using the name that is provided (AMSTERDAM CTA WEST in this example). I will try to find if I can find the code that assign the frequency somewhere else.And of course the question is still how will this work together with the default airspace files. But I think the only way to learn that is just to try and see :).

Share this post


Link to post
Share on other sites

Good day Arno,I try to figure out an example:I have the coordinates for Berlin Upper radar.But Berlin upper covers only from FL240 until FL610 (overhead is Houston Controll*G*).The Meanthing is that the Airspace is not Airspace B. It is Airspace C above FL100.(In Flightsimulator 10.000 feet.). Maybe there are changes too. It could be the Problem. I think we talk about the Airspace B and not the Airspace C. For example if you want to change the Center Airspace you should normaly take Airspace C. Because if you are not in Airspace C or A. But keep us informed.Many greetingsMatthias R

Share this post


Link to post
Share on other sites

Hi Matthias,As you can see in the XML source you can also define the type of airspace it must be, so if it needs to be C that can be defined ther. So I am sure that it is also possible to define an Upper Area Control center with it.But the same problems I indicated before are still there of course :). I hope I can do some tests this evening.

Share this post


Link to post
Share on other sites

Good evening Arno,I stand bye for further Informations. Another Problem maybe is the Arrival/Departure Frequency

Share this post


Link to post
Share on other sites

Good evening Arno,I only would like to inform you what I have found out. In the AT9EURW0.BGL you find the Airspaces. In the APXXXX Files you find the Comm Frequencies. I tried something with AFCAD. Take the stock AFCAD File for EDDT. There are the following frequencies.:125.90 ATIS EDDT121.750 Ground TEGEL121.925 Ground TEGEL118.700 Tower TEGEL124.520 Tower TEGEL119.625 Arrival BERLIN121.125 Arrival BERLIN Director132.700 Arrival BERLIN136.100 Arrival BERLIN DIRECTOR119.500 Departure BERLIN120.625 Departure BERLINI inserted a Frequency 120.625 once again but with the Designator TEGEL. Before my changes the ground gave the 119.625=Arrival as Departure Frequency. After my changes He gives the 121.125 as Departure Frequency. On Departure he did not handoff to the Center he hand off to 119.625 *LOL*.But I think anywhere on the Files there should be the connection between Airspace and Frequencys. For example Berlin DIRECTOR normaly only controll Aircrafts shortly before they established on ILS and switch them to the Tower. It is really funny. Surely I can

Share this post


Link to post
Share on other sites

I had a futher look at the XML files and it seems only the airspace at lower altitudes is defined in there. There seems to be no upper airspace.I will do some more searching, maybe they are collected in another file for the entire world and not per region. Or maybe the decompiler can not handle that part. I have also seen that the BGLComp SDK only explains how to add frequencies to an airport (like approach, departure, tower). There seems to be no mention of assigning frequencies to other airspaces and centers (which do not belong to a certain airport of course).

Share this post


Link to post
Share on other sites

Good afternoon Arno,I think it too. But how did Christian his New Zealand Airspace ? Maybe it is hard coded that he handoff at 10000 feet = FL100 from Approach/Departure to Center. I do not understand the sense to assign a controll Frequency for instance Departure and the Flight Simulator does not use it.*G*. Maybe we can find out more.SincerlyMatthias R

Share this post


Link to post
Share on other sites

The scenery Christian made was for Fs2002. In Fs2004 the structure has changed completely and it has moved to the AFD files. So what worked in Fs2002 doesn't really help.

Share this post


Link to post
Share on other sites

Good evening Arno,You are the specialist.-))). I wonder only that is it so difficult. I do not hope, that microsoft hard coded this. By the way yesterday at one of the APXXXX file I found a line in the XML file. There are the Center frequencies. But no connection to any airspace.it shows likeIn FS Berlin Center has two frequency

Share this post


Link to post
Share on other sites

Hi Matthias,This is interesting. I have decompiled all AP* file for the eurw scenery and I have now searched them all for center frequencies, the one you reported is the only one in all those files.So I still think the main frequencies are somewhere else :).

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this