As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD SQUEAL FROM WINDOW 2 LEFT. *S/D* PRESSURE SEAL WAS REPLACED PER MM 56-11-53 AND WINDOW ADJUSTED PER MM 56-11-02 WHEREIN, VERTICAL UP AND FORWARD CLEARANCES WERE FOUND WITHIN LIMITS. SUBSEQUENT PRESSURIZATION TO A DIFFERENTIAL PRESSURE OF 8.0 PSI, REVEALED NO DEFECTS.