What was found
THE AIRCRAFT HAD A PITCH TRIM RUNAWAY ON FINAL APPROACH, THE AUTOPILOT WAS DISENGAGED AND GEAR ALREADY DOWN. SELECTED THE TRIM INTERRUPT SWITCH WITHIN TWO SECONDS. THIS EXTINGUISHED THE RED PITCH TRIM CAS. EVALUATED THE PITCH TRIM FORCES AND DEEMED THE TRIM RUNAWAY HAD STOPPED. AFTER EVALUATING THE CONTROL FORCES, DECIDED THE CONTROL PRESSURE WAS MANAGEABLE TO CONTINUE THE APPROACH IN OUR CURRENT TRIM CONFIGURATION. DECIDED TO CONTINUE THE. THE FLAPS SET 15 DEGREES THEN TAXIED AND SHUTDOWN THE ENGINE.