The top cabin part is separate indeed, so I can rotate it. But the wings are not. They're hard to rotate anyway, or I would have set the ax on 0/0/0.... Well, that is an idea, come to think of it.
The 'world opacity' thing is a problem I encountered before with a herd of reindeer, but I don't remember what I did to get it to work. It should work, but it's not hugely important atm.