What was found
FLIGHT #5531. WHILE PARKED AT THE GATE PRIOR TO DEPARTURE RECEIVED A STAB CH #2 TRIM INOPERATIVE MESSAGE.REPLACED THE HORIZONTAL STABILIZER TRIM MOTOR CONTROL UNIT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT #5531. WHILE PARKED AT THE GATE PRIOR TO DEPARTURE RECEIVED A STAB CH #2 TRIM INOPERATIVE MESSAGE.REPLACED THE HORIZONTAL STABILIZER TRIM MOTOR CONTROL UNIT.