1985 INTERNATIONAL MOTORHOME BALL HITCH FAILED. *BF THE CONSUMER WAS PULLING A HORSE TRAILER. THE TRAILER HITCH FAILED AND THEN THE SAFETY CHAINS FAILED. THE TRAILER SEPARATED FROM THE TRUCK, RAN OFF THE ROAD, STRUCK A WALL, OVERTURNED AND THEN CAME TO REST ON THE LEFT BERM. THE CONSUMER NEVER LOST CONTROL OF THE VEHICLE HE WAS DRIVING. A VISUAL INSPECTION OF THE HITCH MECHANISM ON THE TRAILER SHOWED A BENT HITCH TRIANGLE. IT PROBABLY OCCURRED AFTER THE HITCH BECAME SEPARATED WHILE THE TRAILER WAS DRAGGING ON THE GROUND. IT ALSO COULD HAVE OCCURRED WHEN THE TRAILER STRUCK THE WALL. THE HITCH SAFETY LATCH WAS POPPED AND THE PIN WAS MISSING. THE AREA WHERE THE BALL HITCH WOULD HAVE BEEN INSERTED APEEARED UNDAMAGED. THERE WERE TWO SAFETY CHAINS HANGING DOWN FROM THE HITCH MECHANISM. OHIO TRAFFIC CRASH REPORT # 10-0231-90. *JB