What was found
AIR TURNBACK, INFLIGHT FAILURE OF BOTH NORM AND AUTOPILOT ELECTRIC PITCH TRIM. REMOVED AND REPLACED STAB TRIM MOTOR PER MM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURNBACK, INFLIGHT FAILURE OF BOTH NORM AND AUTOPILOT ELECTRIC PITCH TRIM. REMOVED AND REPLACED STAB TRIM MOTOR PER MM.