As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITUDE BEGAN CLIMBING AT HIGH RATE. LEVELED AT FL 200 & CABIN ALTITUDE CONTINUED CLIMBING. NOISE FROM MAIN CABIN DOOR. WOULD NOT HOLD CABIN ALTITUDE WITH EITHER PRESSURE CONTROLLED NOR IN MANUAL. FLT#4561 REPLACED MAIN CABIN DOOR SEAL & CPAM IAW AMM. PN ON/OFF 601R31872-1.