As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3899 LOUD SQUEAL SOUND REPORTED FROM NEAR ROW 18 ON RIGHT SIDE (FO) OF A/C. REPORTED BY JUMPSEATING PILOT AND F/A'S. J/S PILOT SAID SOUND FROM EMERGENCY EXIT WINDOW AREA. CORRECTIVE ACTION: PERFORMED EMERGENCY EXIT DOOR PRESSURE SEAL CHECK ON BOTH RT SIDE OVERWING EMERGENCY EXIT DOORS. NO DEFECTS NOTED. CLEANED SEALS. OK FOR SVC. REF. AMM 52-22-00-200-802. (5971804).