As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED CABIN WOULD NOT PRESSURIZE. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND AFT SECTION OF AFT CARGO DOOR NOT SEATED. MAINTENANCE PERFORMED OPS CHECK OF AFT BAGGAGE BAY DOOR IAW AMM. OPS CHECK GOOD. ACFT RELEASED FOR SERVICE.