In "READ ME" text file i dont understand where is:
"6. For prop aircraft there's one more task, required to make the props
appear stationary. Copy the newly supplied PROPDISCx.TGA files into the
appropriate Texture folder inside the static aircraft folder. For
example, for the O-1E_static, copy the propdisc2.tga file into the
'USAFWhite1' folder inside the O-1E_static folder, overwriting the
existing .tga file. This new .tga replaces the stock one with a
non-blurred version, that is used to static the prop.