Originally Posted by
Zulu Alpha
So can you just make one up and use it.
I'd like "aerobatics one" ...can I just start using it tomorrow?
I don't see why not. If they use 'themed' callsigns for the formation courses at North Weald on a daily basis I don't see how these can have been pre-registered with ICAO etc.
Just pass the callsign you want to use and the associated aircraft registration when you book out. Any landing fees etc. can then be allocated correctly by the ATC facility.
If you are away from your home base and the callsign is not recognised they will ask for the registration.