As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A LOUD POP SOUND FROM MAIN ENTRY DOOR FOLLOWED BY CONTINUOUS SOUND OF AIR LEAKING PAST DOOR. CABIN REMAINED PRESSURE. DIVERTED. MAINTENANCE REPLACED MAIN ENTRY DOOR LOWER ACOUSTIC SEALS. OPS CHECKED OK. AIRCRAFT WAS RETURNED TO SERVICE.