As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SPEED CLACKER SOUNDED CONTINUOUSLY ABOVE 230 KIAS DESPITE FLAPS, SLATS AND GEAR ALL UP AND SECURE. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED FLAPS, SLATS AND LANDING GEAR. NO DAMAGE OR DEFECTS FOUND. MAINTENANCE PERFORMED FUNCTIONAL TEST OF OVERSPEED WARNING SYSTEM IAW AMM. NO DEFECTS NOTED. ACFT RELEASED FOR SERVICE.