As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB, EXCESSIVE NOISE CAME FROM CENTER WINDSHIELD. AIRCRAFT LANDED BACK TO DEPARTURE. THE CENTER WINDSHIELD WAS PREVIOUSLY REPLACED. MAINTENANCE FOUND SCREW TORQUE NOT PROPERLY SETTED. WINDSHIELD RETORQUED AND RESEALED IAW AMM AND AIRCRAFT RETURNED TO SERVICE.