TO A320 contamin rw
 

How to perform TO speed calculation if RW cowered with more then 3 mm contaminat on A320 with sharklets?
That is going to be TO from contaminatid RW,but i can't find any reference in FCOM.

78T A318/A319/A320/A321 FLEET PER-TOF-CTA-40-20

on my book

Concerning contaminant types the sharklet performance is more advanced in relation to basic modification performance


Dry
Wet Compacted snow
Dry snow2/5(10mm) Dry snow 5" + 1/8" (130 mm)
Wet snow 1/5" (5 mm)
Wet snow 3/5" (15 mm)
Wet snow 6/5" (30 mm)
Slush 1/4" (6 mm)
Slush 1/2" (13 mm)
Water 1/4" (6 mm)
Water 1/2" (13 mm)
Ice