As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEFECT 755236: - VERY LOUD SQUEAL FROM CAPT SIDE WINDOW. - RESOLUTION: CLEANED AND INSPECTED CAPT SLIDING WINDOW SEAL NO DISCREPANCY FOUND. FOUND DRAIN TUBE AT FWD EDGE OF CAPT WINDOW PINCHED IN OUTER WINDOW SEAT. REPOSITIONED TUBE, PERFORMED LEAK CHECK NO TROUBLE FOUND REF B737 AMM 56-12-11 AND 05-51-91.