As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LEVEL OFF, AUTO PILOT DISENGAGED AND PITCH MISTRIM ANNUNCIATOR ILLUMINATED. EXCESSIVE PITCH TRIM REQUIRED TO MAINTAIN LEVEL FLIGHT. ACFT DIVERTED & LANDING UNEVENTFUL. MX INSPECTED ELEVATOR TRIM CABLE TENSION AND TRAVEL. NO DEFECTS FOUND. LT AND RT ELEVATOR TRIM ACTUATORS WERE GREASED DUE TO WATER CONTAMINATION. TRIM CABLES WERE LUBED. ELEVATOR TRIM OPS CHECKED GOOD. ACFT RETURNED TO SERVICE AND A SUCCESSFUL OPS CHECK FLIGHT PERFORMED.