As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT UPON BATTERY POWER UP IMMEDIATE CLICKING NOISE HEARD FROM TAIL SECTION WHILE IN PRIMARY TRIM MODE. THE MAINTENANCE VENDOR TROUBLESHOT AND DETERMINED THAT THE HORIZONTAL STAB PITCH TRIM ACTUATOR WAS DEFECTIVE. THE DEFECTIVE UNIT WAS REMOVED AND EXCHANGED FOR AN OVERHAULED ACTUATOR UNIT. OPS CHECKS GOOD. AIRCRAFT WAS RETURNED TO SERVICE. TEARDOWN REPORT REQUESTED.