As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MDT/IAD - FLT 6495 - DURING TAXI AT 1610 HOURS ON 6-19-97, MADE A SCHEDULED LANDING WITH ONE DISCREPANCY WHICH WAS MAIN BAGGAGE SMOKE DETECTOR WOULD NOT TEST. MAINTENANCE INSPECTED AND REMOVED AND REPLACED SMOKE DETECTOR. OPS CHECK OK. AIRCRAFT RELEASED AND RETURNED TO SERVICE. (X)