ICAO parameters for aircraft not listed by ICAO

What is best practice for the aircraft.cfg ICAO parameters for an aircraft
that is not listed by ICAO? I couldn’t find any ‘experimental’ or ‘generic’
type and want to avoid ATC referring to our aircraft (Avro Vulcan) by a
different name if possible.

Hello @MartynJF , If you aircraft is not listed in the ICAO Official
, it
will be called by it’s tail number. So you can put what you want in
icao_type_designator and icao_manufacturer Regards, Boris