As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT WOULD NOT PRESSURIZE. NO EMERGENCY DECLARED, RETURNED TO DEPARTURE. FOUND THE L2 DOOR BAYONET & BAYONET RECEIVER ON FRAME BENT & DAMAGED PREVENTING THE DOOR FROM SECURING PROPERLY. REMOVED AND REPLACED BAYONET RECEIVER AND RIGGED IAW AMM 52-40-00.