What was found
LOUD SQUEAL STARTED AT FL340.AIRCRAFT MAINTAINS PRESSURE.SUSPECT COCKPIT WINDOWS. INSPECTED ALL WINDOW SEALS. CLEANED SLIDING WINDOW SEALS WHICH WERE VERY DIRTY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOUD SQUEAL STARTED AT FL340.AIRCRAFT MAINTAINS PRESSURE.SUSPECT COCKPIT WINDOWS. INSPECTED ALL WINDOW SEALS. CLEANED SLIDING WINDOW SEALS WHICH WERE VERY DIRTY.