All the work figuring out the 2024 BGL format may not have been in vain.🤞

20 minutes ago, jabloomf1230 said:

All the work figuring out the 2024 BGL format may not have been in vain.

Thanks. Good to know. The code for reading MSFS 2024 structures is still there but if you download, maybe modify and put a default airport to Community, it should still be loaded through SimConnect. 

I need to look at SU3 beta closer.

Alex

Alex,

I sent you an email in case it ends up in your spam.

Jay

2024 SU3 Beta -

With the new scenery download ability - I have downloaded quite a lot of the Asobo streamed airports and cities etc to Hard Drive but  when I try to download some German, French and UK airports and cities the sim Locks Up/Freezes  and I have to exit the sim from the Task Manager........

Any one seeing the same issue.... ?

Edited May 19, 20251 yr by aerostar

14 hours ago, jabloomf1230 said:

I sent you an email in case it ends up in your spam.

Hi Jay, got it and answered. 

12 hours ago, aerostar said:

Any one seeing the same issue.... ?

I'd rather ask this in the MSFS forum:

https://www.avsim.com/forums/forum/863-microsoft-flight-simulator-20202024/

Alex

11 minutes ago, albar965 said:

I'd rather ask this in the MSFS forum:

https://www.avsim.com/forums/forum/863-microsoft-flight-simulator-20202024/

Alex

Yup thanks Alex...  can't delete this post now...  but the good news - I fixed the issue , so no need to bother those good people now.... 🙂

24 minutes ago, aerostar said:

Yup thanks Alex...  can't delete this post now...  but the good news - I fixed the issue , so no need to bother those good people now.

No prob. 🙃

On 5/17/2025 at 7:41 PM, jabloomf1230 said:

All the work figuring out the 2024 BGL format may not have been in vain.🤞

Does that mean there is already some work done understanding on the structure of the scenery/airport BGLs from 2024? Because I couldn't find any information on the structure anywhere and for a small project I want to read part of the BGLs, but can't figure out what has changed from the offsets/field sizes etc. since 2020.

If there is already some structure documented somewhere it would be nice to see that.

Alex spent some time trying to figure out the changes to the Airport BGL file format, but in the end he just used API calls to decipher airport structure in MSFS 2024. This approach requires that MSFS 2024 be running at least once, so that LNM can create its airport database.after that parsing run, everything is fine until the user makes any change to the MSFS airport database.

I also tried to figure out the changes in the BGL format. There are a number of new fields in the BGL that correspond to feature changes added for MSFS 2024. As to your question, I just start with a default MSFS 2020 airport, run it through one of the BGL to XML conversion utilities that can be found on fsdeveloper.com and then create a project in MSFS 2024 from that XML file.

13 hours ago, touchdown84 said:

If there is already some structure documented somewhere it would be nice to see that.

I decoded the structure mostly before Asobo pulled the files. I wouldn't spend any more development time on decoding BGL files.

You can use my tool Navdatareader if you need access to the MSFS 2024 data: https://github.com/albar965/navdatareader
It use the same code as LNM to read simulator data and supports the same simulators. The result is stored in a Sqlite database.

I use the SimConnect facility interface to get airports and navaids: https://docs.flightsimulator.com/msfs2024/html/6_Programming_APIs/SimConnect/API_Reference/Facilities/SimConnect_AddToFacilityDefinition.htm

Alex