What was found
ELECTRIC PITCH TRIM MALFUNCTION WITH AUTO-PILOT DISENGAGED. ELEVATOR TRIM RUN AWAY IN THE UP DIRECTION. PILOT WAS ABLE TO OVERRIDE PITCH WITH YOKE AND DISABLED MALFUNCTION BY PULLING AUTOPILOT 115VAC CIRCUIT BREAKER. AIRCRAFT RETURNED TO FT. WAINWRIGHT WITH NO FURTHER ISSUES. SYSTEM WAS INSPECTED AND AUTOPILOT COMPUTER RESEATED IN RACK. SYSTEM OP-CHECKS PERFORMED AND EVALUATION FLIGHT WAS CONDUCTED WITH NO FURTHER ISSUES.