Originally Posted by Danny42C
ATC - a clenched fist holding a Chinagraph.
Whilst that might pass muster with the Inspector of Badges and HMQ, I was more minded to something more representative of Flying Prevention.
Might I propose a "No Entry" sign, wings volant and elevated of course? Motto "
Volante hic" *
* At least, that's what Google Translate tell me, although I'm not convinced!