As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AIRCRAFT RETURNED TO RFD DUE TO MULTIPLE EICAS MESSAGES PROBE HEAT, TAT PROBE, AUTO THRUST MESSAGES APPEARED. TROUBLESHOT AIRCRAFT FOUND THE LT MAIN GEAR TRUCK POSITIONER ACTUATOR BYPASSING INTERNALLY. REMOVED AND REPLACED THE POSITIONER IAW AMM 32-32-15. NO DEFECTS NOTED, GROUND AND LEAK CHECKS GOOD. AIRCRAFT PASSED FLIGHT SUCCESSFULLY.