As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD HIGH PITCH SOUND COMING FROM CAPTAIN WINDOW CAPTAINS NUMBER 2 SLIDING WINDOW INSPECTED AND FOUND TO HAVE GLASS TO FRAME SEAL IN POOR CONDITION. CAPTAINS NUMBER 2 WINDOW ASSY REPLACED AS PER AMM 56-11-02-004-001. CABIN PRESSURISED TO 4PSI DIFF PRESSURE AS PER AMM 05-51-24-782-001-001 AND NO LEAKS EVIDENT. ROTABLE PARTS CHANGE WAS INDICATED - TT 1636382 SN OFF 0851 WINDOW, AY, PIL OFF 76-5613-9-9001 0851 ON 76-5613-9-9001 0376.