As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CVG - FLT 4390 - CAPTAINS AND FIRST OFFICERS PITCH TRIM INOPERATIVE ON THE YOKE. STANDBY TRIM OPERATED NORMAL. EMERGENCY WAS DECLARED AND AIRCRAFT WAS LANDED SAFELY. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. OPS CHECK OF CAPTAIN AND FIRST OFFICERS YOKE TRIM WAS SATISFACTORY AND AIRCRAFT WAS RETURNED TO SERVICE. (M)