As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AIRCRAFT FAILED TO PRESSURIZE. RETURNED TO FIELD. LANDING UNEVENTFUL. INTERROGATED CDS, NO APPLICABLE FAULTS. R & R AFT OUTFLOW VALUE. NO HELP. R & R AFT CARGO DOOR SEAL DUE TO TORN SEAL. ACFT PRESSURIZES NORMALLY. RETURNED TO SERVICE.