As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STAB CH 1 WILL NOT ENGAGE. REMOVED AND REPLACED HORIZONTAL STAB TRIM ACTUATOR WITH SERVICEABLE UNIT IAW MM 27-42-01. REMOVED AND REPLACED HORIZONTAL STAB TRIM MOTOR CONTROL UNIT IAW 27-42-05. OPS CHECK GOOD IAW MM 27-40-00 & 27-41-00. PN OFF 8369-3 SN OFF 748.