As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT THE ACFT DIVERTED DUE WHILE A FL 350, CABIN ALTITUDE RAISED UP TO 9600FT. WHILE ON DESCENT CABIN ALTITUDE KEPT RISING. IAW FIM 21-31-00-810-824-A PERFORMED LT & RT AIR CONDITIONING PACK'S INSPECTION & FOUND RT PACK BELLOWS FROM PACK OUTLET DUCT DAMAGED. R & R IAW AMM 21-51-21. PERFORMED CABIN LEAKAGE TEST IAW AMM 21-31-00-720-802-A500 & FOUND OK NORMAL. THE ACFT RETURN TO NORMAL OPERATION.