I’m sorry but I don’t really understand this request… We have Test Flight (as the example in game above).
You’re asking to have ‘Training’ as a callsign option? We already have 2 servers, one with Training in it’s make for this option in multiplayer. Real world training just uses the registration of the aircraft, or specific company callsign + flight number for a flight.
For example, in the real world when flying, my callsign is “Golf Bravo Sierra Tango Papa” or “Golf Echo Yankee Papa Whiskey”
But people in training server don’t really train, Ive seen a lot of people in training server that have access to expert server but they just do regular non-training flights because they have more ATC in training server.
But it would be better for a callsign for it, for example if 2 aircraft use the callsign TRAINING it will be confusing for the controller to specify which is which, if we have a non GA callsign for training they can use a flight number which will not confuse the air traffic controllers.
“London Heathrow Tower, Tango Romeo Alpha India November India November Golf, ready for departure at runway 2 7 left, departing straight out.”
Yeah, not great.
But, I agree with @Ecoops123. It is more realistic to use the reg, or company callsign. Even “test flight” isn’t realistic.