You can personalize ATC to call your plane whatever you like, even on a skin-by-skin basis.
Edit the aircraft.cfg with a text editor. In the [GENERAL] section there will be an atc_type and an atc_model statement. Make them something like:
atc_type-"$$:Boeing"
atc_model="$$:Stearman"
or, if you prefer,
atc_type=$$:Boeing"
atc_model="$$
T-17"
or whatever. Be sure to use the "$$:" at the beginning. That tells the sim to use voice synthesis to sound out the word, even if it isn't in its dictionary.
Then go down to your paint schemes, which are headed [FLTSIM.0], [FLTSIM.1], and so on. Those may also have atc_type and atc_model statements. If they don't, you can add them. Any value you put in there will override the [GENERAL] one for that skin. There is also an atc_id line for your specific call letters So you can have:
atc_type="$$:Boeing"
atc_model="$$:N2S"
atc_id=N704AH
This will make ATC call your plane an N2S rather than a PT-17 if you are flying a Navy skin. Or:
atc_type="$$Stearman"
atc_id="$$:Red Baron"
You get the idea. Whatever you like.
August