I can report that the webFMC works just fine on my iPad in 2024 SU2 using the new 777-200ER.  (Also using the as yet unsupported 777-300ER and 737 series.)

As another data point, I haven’t had any luck with is the Horizon 787-9 mod in 2024.  I see the keys and they do affect the FMC in the sim, but there is no display screen.

5 hours ago, 301ad said:

As another data point, I haven’t had any luck with is the Horizon 787-9 mod in 2024.  I see the keys and they do affect the FMC in the sim, but there is no display screen.

In MSFS 2024 the method of overriding local files with somthing else is no longer working. That is why most of the WebFMCs made for 2020 will no longer function. I will release a new batch of WebFMCs with AAO version 4.53 using a different technique (pop-out windows).

Sometimes the problem can be fixed by renaming the package from "zzz_*" to "aaa_*" (so it comes first in the file list, instead of last). But in this case I haven't even looked at their new implementation, so I can't promise that it will work at all.

Edited May 6, 20251 yr by Lorby_SI

You, sir, are amazing.  I changed "zzz_*" to "aaa_* and the 787 webFMC now seems to be working fine.  I'm just sitting at a gate, haven't tried a full flight yet, but will report back if it goes south again.

Thanks so much, again, for your amazing support.