As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF UNUSUALLY HIGH PRESSURE REQUIRED TO KEEP THE AIRCRAFT UNDER PITCH CONTROL. EMERGENCY TRIM SELECTED AND TRIM CONTROL WAS REGAINED. AIRCRAFT RETURNED TO DEPARTURE AIRPORT AND LANDED WITHOUT FURTHER INCIDENT. ALL MAINTENANCE MANUAL CHECK WERE RUN AND PROBLEM WAS NOT ABLE TO BE DUPLICATED