Okay, I just checked it out, and it looks like permissions to the Airfield section of the website were somehow knocked out.
The pages are there, but only Admins can see them.
I'm not exactly sure why that happened, as I specifically reset the permissions a few weeks ago when Raven recently set up the new "Oesau Members" usergroup.
I'd like Raven to check this out first before I do anything.