As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, CYAN STAB TRIM FAULT CAS MESSAGE POSTED. MDC INDICATED PILOT MANUAL TRIM SWITCH FAULT DETECTED BY HSTECU. WHEN THE AUTOPILOT WAS DISCONNECTED PRIOR TO LANDING, THE HORIZONTAL STABILIZER TRIMMED TO 0.0. NEITHER THE PILOT'S NOR THE COPILOT'S TRIM SWITCHES WORKED—IN EITHER PRIMARY OR SECONDARY STAB TRIM—BOTH PILOTS WERE NEEDED TO OVERCOME THE CONTROL FORCES TO LAND. REPLACED CAPTAIN'S TRIM SWITCH IAW CL-350 AMM 27-41-01. OPS CHECKS SATISFACTORY.