As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PITCH TRIM MASTER CAUTION IN-FLIGHT PREFORMED E&A CHECKLIST AND RETURNED TO FIELD. ALL LANDING PARAMETERS NORMAL. REMOVED FROM SERVICE. CDS FAULTS - FCECU FAILURE 67, 63, E7, E3. REMOVED AND REPLACED FCECU IAW Q400 AMM 27-00-01-000-802 AND 27-00-01-400-802. OPS AND FUNCTIONAL CHECK OF FCECU GOOD. FAULTS DID NOT RETURN. AIRCRAFT RETURNED TO SERVICE.