What was found
STAB TRIM CHANNEL 1 STATUS MESSAGE. COULD NOT ENGAGE STAB TRIM CHANNEL 1. MOTOR 1 FAILURE ON HSTCU ON GROUND TEST. REPLACED HSTA ACTUATOR IAW 27-40-00 AND REPLACED MOTOR CONTROL UNIT IAW 27-42-05. OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STAB TRIM CHANNEL 1 STATUS MESSAGE. COULD NOT ENGAGE STAB TRIM CHANNEL 1. MOTOR 1 FAILURE ON HSTCU ON GROUND TEST. REPLACED HSTA ACTUATOR IAW 27-40-00 AND REPLACED MOTOR CONTROL UNIT IAW 27-42-05. OPS CHECK GOOD.