Hi!
Thanks for your report, and it is actually the A330-200 that is causing the issue here I suspect. With the next patch A330-200 will be removed from the achievement criteria since it’s not offered if playing without mods
After the patch is released, you should get it automatically (A330-200 will be considered landed). It’s hard to debug achievements accurately since the data is user-unique and stored Steam side, but this fix should solve your issue. Please get back to me if it isn’t resolved after the patch is released.
You are right, but it should be completely solved now with the upcomming patch. There was a Steam sync oversight on my part that made the A330200 “unlanded” again. Tried to land every airline achievable aircraft (A330200 excluded) and got the achievement again (after resetting them). Adding it here: for those having issues, make sure you haven’t invalidated achievement for the save (sandbox, cheats, etc.).