As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CHECK AIR DUCTING ON LOWER RIGHT SIDE FLOOR VENT OF COCKPIT WALL AIR NOISE IS LOUDER THAN NORMAL AND SOUNDS LIKE DUCTING MAY HAVE SEPARATED. FOUND MULTIPLE DUCTS, IN THE COCKPIT, LOOSE DUE TO OVERHEATING AND MELTING. R&R ALL COCKPIT AIR CONDITIONING DISTRIBUTION DUCTS AND COCKPIT DUCT OVERTEMP THERMOSTAT.