As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2328: PITCH TRIM CAUTION ON TAXI OUT. AIRCRAFT RETURNED TO BLOCK. MAINTENANCE INTERROGATED CDS AND FOUND 'FCECU FAILURE 7C AND 67'. CLEARED FAULTS IAW Q400 FIM TASK 27-30-00-810-803. C/W OPS CHECK OF ELEVATOR PITCH TRIM SYSTEM IAW Q400 AMM TASK 27-32-00-710-802. OPS CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.