As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO'S ELEVATOR TRIM SWITCH FAILED IN FLIGHT. RETURNED TO FIELD. LANDING UNEVENTFUL. REMOVED FROM SERVICE. CDS SHOWS CPILTRIM SW FAILURE. REMOVED AND REPLACED THE CO-PILOTS TRIM SWITCH IAW TASK CARD 273000Q01-1, WO 242829. OPS CHECK GOOD. WHILE CHANGING CO-PILOTS TRIM SWITCH FOUND BROKEN WIRE AT THE SWITCH. REPLACED SWITCH AS A PRECAUTIONARY MEASURE ANYWAY. RETURNED TO SERVICE.