As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN DOOR PNEUMATIC ACT LEAKING. SUSPECT BAD DIAPHRAM. PLACED MAIN CABIN DOOR ON DEFERRAL, PER MEL 52-17-01-5. DMP C/W, PLACARD INSTALLED. CONTROL NR M730128 REMOVED AND REPLACED L1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER WITH REF TO MM 52-10-14-301. SERVICED CYLINDER PER SYMS ESR: IPC 52-11-01-05B-580.