As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, NR 3 PACK SHUTDOWN, LEAVING NO OPERATIONAL PACK, (NR 1 PACK WAS ON MEL, AND NR 2 PACK IS DEACTIVATED). AIRCRAFT DIVERTED TO IAH AND MADE A SAFE LANDING. REPLACED NR 3 ACM, NOTE: ALSO REPLACED NR 1 ACM AND REMOVED FROM MEL. A/C RETURNED TO SERVICE.