As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DOOR SEAL BLEW OUT ON ROUTE,THROUGH FL 310. PRESSURIZATION WAS NOT AFFECTED, BUT THE NOISE CAUSED PROBLEMS WITH ATC COMMUNICATION. THE NOISE WAS CONSIDERABLE UNTIL PRESSURIZATION DIFFERENTIAL WENT DOWN. MAINTENANCED ADDRESED PROBLEM BY, REPAIRING DOOR SEAL AND DOING A GROUND PRESSURIZATION TEST, DOOR SEAL CHECKED OUT GOOD.