As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, UPON DEPARTURE AT 4,000 FEET A LOUD RATTLING NOISE IN THE AREA OF THE FRONT WINDSHIELD AND OVERHEAD PANEL. THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE CAPTAIN'S HUMP SEAL PEELING AND PERFORMED A TEMPORARY REPAIR. THE HUMP SEAL REPLACEMENT WAS DEFERRED. THE FINAL REPAIR TO THE CAPTAIN'S HUMP SEAL WAS COMPLETED.