Sure, on aircraft.cfg it’s just this section, however the icao codes are used for matching so other players without these lines would likely not match. ATC however is fixed and good to go:
[GENERAL]
atc_type ="$$:Ilyushin"
atc_model ="TT:ATCCOM.AC_MODEL IL103.0.text"
Category = "Airplane"
performance =""
editable = 1
wip_indicator = 2
icao_type_designator ="I103"
icao_manufacturer ="ILYUSHIN"
icao_model ="Il-103"
icao_engine_type ="Piston"
icao_engine_count =1
icao_WTC =L
icao_generic=0
The flight model and engine configs are attached below as text files. The main difference is the positioning of the logical models.
flight_model.txt (10.7 KB)
engines.txt (8.6 KB)