As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRPLANE FAILED TO PRESSURIZE AFTER TAKE OFF. RETURNED TO FIELD. LANDING UNEVENTFUL. FOUND AFT BLOWOUT PANEL DISLODGED INSPECTED PANEL AND SURROUNDING AREA NO DEFECTS NOTED REINSTALLED PANEL IAW AMM 25-52-01-400-802 3(A) (3) FOUND HOLE IN LOWER CENTER CARGO DOOR SEAL REMOVED AND REPLACED DOOR SEAL IAW AMM 52-31-26-000-801, 400-801 GROUND CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.