Apologize my previous question was not very clear
AFM supplement has tables for take off and graphs for landing, both for any type of approved contaminant (except ice and wet ice which are not approved).
While in the landing graphs the depth of contaminant is taken in consideration (I agree daysleeper that max value shown may be considered as the limits) , all take off tables has no indication for depth
.
I need to know the max depth of contaminant I can accept on take off for each type on contamination.
I have found on the web some informations from Boeing / Airbus which, I suppose, do not apply to my airplane as related to type of wheels, distance from engines etc etc (they accept dry snow up to 60 mm. !
).
Nothing found from Aviation Authorities related to contaminant depth , except FAA which has guidance material (but very very old).
Thanks again and happy new year !!!!