As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD SQUEAL COMING FROM FIRST OFFICER`S SLIDING WINDOW. SEEMS TO BE COMING FROM TOP AFT PART OF WINDOW. R & R FIRST OFFICER`S SLIDING WINDOW. ACCOMPLISHED RESISTANCE CHECK & WINDOW ANTI-ICING SYS TEST IAW AMM 56-12-11PB 401. OPERATIONS TESTED OK, ALSO PRESSURIZED A/C TO 4.0 PSID IAW AMM 05-51-91, NO LEAKS NOTED.