As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEWLY OVERHAUL ELEVATOR TRIM ACTUATOR LITERALLY FELL APART AFTER INSTALL DURING TRIM OP`S CHECKS. GROOVE PIN PN .0937 X .325 TYPE 3 FELL OUT OF ROLL CHAIN SPROCKET PN 0310332. GROOVE PIN HOLES WORN IN SPROCKET AND ACTUATOR CAUSING FAILURE. SUSPECT FAULTY OVERHAUL PROCEDURES.