No EASA make up they own laws, and are becoming a pain in the rear end.
You do not know if your mod is a Major or a Minor one until you put the paperwork into them. I have had a mod to a Helicopter to install an encoder to the Transponder and EASA say this mod is a Major Mod as you are modifying the static system and deemed as hazardous and dangerous as the R22 is certified IFR night and Day!! And that is one of many.
All we are trying to do is comply with the law regarding carriage of mode c.
No such list exists.
L