As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. SDF-DFW FLIGHT RETURNED TO SDF ACCOUT OF HORIZONTAL STABILIZER PRIMARY TRIM INOPERATIVE. LANDING UNEVENTFUL. REMOVED AND REPLACED PRIMARY LONGITUDINAL TRIM ACTUATOR MOTOR IAW AMM 27-40-01. OPERATIONAL CHECK GOOD.