As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE ON THE HORIZONTAL STABILIZER TRIM ACTUATOR (HSTA), LOOSE BOLTS WERE FOUND IN THE UPPER BOLT LOCATIONS OF THE UPPER HSTA FITTING ASSEMBLIES (LT AND RT). THE BOLTS WERE RETORQUED TO THE PROPER SPECIFICATION. CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.