As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED TAIL WHEEL SHIMMEY ON ROLLOUT, THEN, AIRCRAFT GROUND LOOPED TO LEFT. RIGHT SIDE OF ARM ASSEMBLY P/N A-504 HAD BROKEN OFF APPROXIMATELY 1 INCH FROM CENTER OF ARM. BROKEN ENDS SHOW SIGNS OF POSSIBLE CORROSION. MAINTENANCE RECORDS NOT AVAILABLE TO DETERMINE PART TIME IN SERVICE OR C/W ANY STC FOR TAIL WHEEL CONVERSION.