@FE Hoppy msg #673
Okay, maybe my way of writing wasn't correct. I meant severe weather associated with CB's or squall lines may cause turbulence beyond design limits of aircraft.
In general build up here in the netherlands is different from build up in the ITCZ (flew through it over africa, south america and the atlantic).
In my experience it is generally much less active here.
And normally we don't have many tornado's over here.
I am not saying this is what happened to the AF A330 as we just don't know what happened and probably won't know for months or even years if ever.
My point is only that CB's and associated phenomena may cause a break up.