As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NOT AN SDR - WHILST CARRYING OUT A 100 HOUR INSPECTION, THE ENGINEER NOTICED THAT THE SCREWS ATTACHING THE COUNTERWEIGHT ARM TO THE SERVO TAB WERE LOOSE. THE TRIM TAB WAS OPENED UP, THE SCREWS WERE TIGHTENED, THE TAB WAS CLOSED UP AND THE AIRCRAFT WAS RETURNED TO SERVICE.