As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3557 - THE CREW REPORTED THE SMELL OF SMOKE IN THE COCKPIT AND CABIN. MAINTENANCE REMOVED AND REPLACED GASPER FAN IAW ATR42 AMM JIC 21-26-21. DURING THE OPS CHECK, THE GASPER FAN CIRCUIT BREAKER WOULD POP. MAINTENANCE PLACED THE RECIRCULATION FANS ON MEL 21-22-01 CAT C AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)