As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER DEPARTURE, CREW WAS UNABLE TO PRESSURIZE THE ACFT. MAIN CABIN DOOR (MCD) FLAPPER FOUND OPEN. INVESTIGATION REVEALED BROKEN ROD INSIDE DOOR. ROD REPLACED ,THE PASSENGER DOOR SPRING ROD ASSY REPLACED IAW 52-11-15 OF THE AMM. OPS TEST OF THE PAX DOOR PRESSURE VALVE CARRIED OUT IAW 52-11-15.