What was found
SHORTLY AFTER ROTATION, STAB TRIM NR 2 AND MACH TRIM WENT INOP AND WOULD NOT RESET. PERFORMED QRH AND RETURNED TO DFW. REMOVED AND REPLACED HORIZONTAL STAB ACTUATOR AND MOTOR CONTROL UNIT IAW 27-42-01 AND 27-42-05. OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SHORTLY AFTER ROTATION, STAB TRIM NR 2 AND MACH TRIM WENT INOP AND WOULD NOT RESET. PERFORMED QRH AND RETURNED TO DFW. REMOVED AND REPLACED HORIZONTAL STAB ACTUATOR AND MOTOR CONTROL UNIT IAW 27-42-01 AND 27-42-05. OPS CHECK GOOD.