[thatguy96]

Rotor icons, and all icons, must be edited using a graphics program of some sort, and then imported into .shp files using shpedit. The Master Icon List is a purely reference document.

However, are found in the shps in one of two formats. Either they are pointed to specifically in the file, or they are treated as "turrets" and follow the main helicopter icon as one would find with turreted AFVs. Tandem rotor helos are usually one icon, with no special icon for the rotors (as this would be impossible to make functional using the available format).