As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2364: ELEVATOR ASYMMETRY CAUTION. C/W CHECK LIST. CAUTION LIGHT OUT AT TOUCHDOWN. MAINTENANCE TROUBLE SHOT PER Q400 FIM TASK 27-30-00-810-801 AND COULD NOT CONFIRM FAULTS. PUSHED ON ELEVATOR WHILE PERFORMING THE OPERATIONAL CHECK TO SIMULATED WIND SPEED. NO DEFECTS NOTED. OPS CHECK GOOD. CAUTION LIGHT DID NOT RETURN. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.