As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
4130 TUBING WAS FOUND CRACKED BETWEEN LEFT FORWARD GEARBOX MOUNT AND LEFT REAR GEARBOX MOUNT. PROBABLE CAUSE, METAL FATIGUE. AC IS 20 YR OLD WITH 5503 HRS. AC DID HAVE HARD LANDING YEARS AGO AT LESS THAN 1000 HRS ON AIRFRAME. POSSIBLE FRAME WAS SUBJECTED TO ADDITIONAL STRESS FROM THE HARD LANDING. RECOMMEND OPERATORS TO INSPECT AIRFRAME TUBING IN THIS AREA FOR POSSIBLE CRACKS.