What was found
"WHILE CLIMBING THROUGH FL330 CABIN ALT CAUTION MSG CAME ON FOLLOWED BY CABIN ATL WARNING. WE COMMENCED AN EMERGENCY DECENT THEN PAX OXY CAUTION COME ON. WE RAN QRH, THEN DESCENDED TO 8000 FEET. ALL MESSAGED CLEARED EXCEPT FOR PAX OXY AS THE MASK IN THE CABIN AUTOMATICALLY DEPLOYED CABIN PRESSIZED 8.2 INITAED 12,000 CP " "REF AML'S 3782382-1, 3782383-2, 3782384-1, 3782384-2 & 3782385-1 FOR ALL CORRECTIVE ACTIONS. PER SB 670BA-21-028, ORIGINAL INSULATION NEAR RH SAFTEY VALVE SHOULD NOT BE INSTALLED, REMOVED IAW AMM 25-83-02. RH SAFETY VALVE OPS CHECK GOOD IAW AMM 21-32-03. FOUND INSOLATION BLANKET "