As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6003 - FAT-PHX - PILOT NOTICED NR 1 STAB TRIM WOULD NOT ENGAGE. MAINTENANCE TROUBLESHOT THE DISCREPANCY TO THE TRIM ACTUATOR AND THE MOTOR CONTROL UNIT. THE ACTUATOR AND THE MOTOR CONTROL UNIT WERE REPLACED. OPS CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)