Don't know if the Airbus FCOM is being misread as I don't have access to the latest version.
We've had some engine damage in years past but nothing I know of this year.
Dct_Mopas
Our definition (which they say is from Airbus) says:
"10c or less and any visible moisture (such as clouds, fog with visibility of 1 nautical mile or less, rain, snow, sleet, or ice crystals)."
So visibility of 1 mile or less only pertains to fog.