As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 30,000 FT RECEIVED LOUD NOISE COMING FROM SERVICE DOOR. PRESSURIZATION WAS NORMAL, NO DOOR WARNING INDICATIONS. NOISE COMES FROM LOWER RT SIDE. FLIGHT ATTENDANT REPORTS VIBRATION & FELT LIKE AIR WAS COMING FROM DOOR. DECLARED AN EMER & DIVERTED. R & R SERVICE DOOR SEAL IAW AMM 52-41-07.