As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT FROM 18,000 TO LANDING, FA'S NOTED L2 DOOR SQUEAL, FA COMMUNICATIONS WERE NOT EFFECTED AND NO AIRCRAFT PRESSURIZATION ISSUES NOTED. GROUNDED - YES. REF EA 900ER-21EA-25825 REV. 01. APPLIED MULTIPLE BEADS OF SEALANT OF RANDOM SIZE AND SHAPE JUST PAST THE EDGE OF THE OUTFLOW VALVE DOOR-TO-DOOR INTERFACE.