As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE BOARDING PAX. SMOKE STARTED ENTERING CABIN IN MID-CABIN RIGHT SIDE AREA.(L1251724)PAX. DEPLANED VIA FWD ENTRY DOOR. FOUND GASPER FAN CONNECTOR & FUSILAGE INSULATION BLANKET BURNT. REPLACED AIR COND. MODULE & CIRCUIT BREAKER AS PER STANDARD PRACTICES. REPLACED GASPER FAN AS PER MM. 21-24-21 PG 401