Tank you friends for your response , I'm familiarized with A320 SRM , first for the identification I refered to SRM 53-43-14 I found that the modification 26655k2205 applied to our aircraft, so the aft cargo compartment with CLS , but for materiel wish floor pnl made of the SRM give only the thinness , in other wise in chapter SRM53-02-00 allowable damage table 102 there is a colone (panel name) exp: pc1, ccc1 , bcc1 ... ??? And a colone skin colore . In my case I have a panel damaged with ALU/GFRP , and when I refered to SRM 53-02-00 fig101 page bloc101 , in reality I'm in zon B because I have CLS system, and in figure we see in the center line of the loading track . I can't understand I'm in zone B With GFRP pnl but in reality I have A ALU/GFRP that used only in ZOne C .