Good point Bubbers44,
The acars messages seem consistent with what you might expect to see with cell penetration and heavy icing covering up all the pitot probes, and ports, causing the loss of data to nav systems and to flt control systems, followed by upset, followed by loss of cabin pressure control (down low)
PJ2, I don't have the maintenance ATA fault manual in front of me, but I would guess acars code 341115 would likely decode this way: 34=Nav ATA section, 11=subsection (item) pitot static, 15 = specific status condition or report.
Just a guess.
Any mtc guys wanna tell us what piece of equipment this is and what it's status is?