What was found
PILOTS WERE DIRECT SMO AT THE END OF THE FLIGHT AT 5,000 FT. AUTOPILOT WAS ENGAGED IN ALTITUDE HOLD NAV MODE. WE RECEIVED A CAS WARNING OF PITCH TRIM RUNAWAY ALONG WITH VOICE CALLOUT TRIM RUNAWAY. WE PUSHED THE TRIM INTERRUPT SWITCH & RAN THE QRH CHECKLIST. THE AUTOPILOT HAD BEEN DISENGAGED WITH WARNING. THE FIRST OFFICER WAS FLYING. IAW QRH WE PULLED THE PITCH TRIM CIRCUIT BREAKER & PUT THE TRIM INTERRUPT SWITCH BACK TO NORM. THE TRIM RUNAWAY DID NOT CONTINUE. WE LANDED WITHOUT INCIDENT USING THE ALTERNATE STAB TRIM.