As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEVATOR PITCH TRIM MOTOR HOUSING ATTACH SCREWS ARE WORKING LOOSE AND CAUSING EXCESSIVE MOVEMENT OF THE ELEVATOR SYSTEM. THIS HAS BEEN AN ISSUE WITH ALL 24 OF OUR AIRCRAFT. TO CORRECT, ONE MUST REMOVE THE TRIM MOTOR, RETIGHTEN THE SCREWS, AND REINSTALL AS THE TWO SCREWS ARE POSITIONED FLUSH AGAINST THE WALL OF THE AIRCRAFT TAIL.