As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: CATERING REPORTS L4 DOOR DIFFICULT TO OPEN. MAINTENANCE FOUND THE UPPER AND LOWER AFT CORNERS OF DOOR ARE WEDGED INTO FRAME AND THE GIRTBAR WAS MISALIGNED. UPON FURTHER EVALUATION MAINTENANCE FOUND THE DOOR DAMPER AMD EMERGENCY OPERATION CYCLINDER DIAPHRAGM WAS RUPTURED, REPLACED DIAPHRAGM PER CMM 52-11-05.