As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POST FLIGHT CREW REPORTED, LOUD SQUEAL COMING FROM CAPTAIN'S WINDOW WHILE THE AIRCRAFT WAS PRESSURIZED. NUMBER 2 LEFT WINDOW SEAL REMOVED AND REPLACED PER BOEING 767 AIRCRAFT MAINTENANCE MANUAL 56-11-11. LEAK CHECK GOOD. NO ADDITIONAL FAULTS NOTED.