As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD ''POP'' HEARD IN-FLIGHT. DOOR SEAL LIGHT ''ON''. DOOR SEAL (PRIMARY) DEFLATED. SECONDARY DOOR SEAL HELD PRESSURE. FOUND PRIMARY DOOR SEAL BLOWN. DOOR SEAL REGULATOR FAILED TO CONTROL PRESSURE. BLEW DOOR SEAL. REPLACED SEAL AND REGULATOR. (X)