As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4510 - DURING TAXI OUT, CREW REPORTED THE BAGGAGE SMOKE MASTER WARNING LIGHT ILLUMINATED. CREW DISCHARGED THE BAGGAGE FIRE BOTTLE AND RETURNED TO GATE. MAINTENANCE OPENED THE CARGO DOOR AND NOTICED A STRONG ELECTRICAL ODOR. THE CARGO COMPARTMENT FAN WAS REMOVED AND REPLACED IAW EMB MM. OPEATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE AFTER FIRE BOTTLE WAS REPLACED. (M)