As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1729-LGA - SMOKE - FLIGHT CREW REPORTEDLY OBSERVED SMOKE COMING OUT THE FLIGHT CONTROL UNIT. MAINTENANCE REMOVED AND REPLACED THE FCU PER AIRBUS MAINTENANCE MANUAL 22-81-12-991-002. VENDOR TEARDOWN REPORT INDICATES THE T1 AND T2 TRANSFORMERS IN THE FCU WERE BURNED DUE TO OVERCONSUMPTION AND REPLACED.