As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD-BUF - FLT 7302 - DURING TAXI, AIRCRAFT RETURNED TO GATE DUE TO BAGGAGE SMOKE WARNING LIGHT ILLUMINATED. MAINTENANCE INSPECTED AND REMOVED AND REPLACED SMOKE DETECTOR. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)