As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF WITH PRESSURE DIFFERENTIAL 4.2, CREW REPORTED A LOUD SQUEAL ON LEFT EYEBROW WINDOW. SQUEAL GOT MUCH LOUDER DURING CLIMB. SO LOUD CAPTAIN COULD NOT HEAR FIRST OFFICER READ CHECKLIST. FLIGHT RETURNED TO FIELD AT TPA AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND SEAL DETERIORATED ON CAPTAIN'S NR 5 WINDOW BLANK. REPLACED SEAL PER AMM 56-11-31, PB 401. PRESSURE CHECK OK. AIRCRAFT OK FOR SERVICE.