What was found
BOS/IAD - FLT 6445 - DURING LANDING AT 1330 HRS ON 6-18-97, EXPERIENCED A MAIN BAG SMOKE CAPTION ILLUMINATION. AIRCRAFT TAXIED TO THE GATE WITH NO PROBLEM. TECHNICIANS TROUBLESHOT THE DISCREPANCY AND FOUND SMOKE CAPTION ILLUMINATION. AIRCRAFT TAXIED TO THE GATE WITH NO PROBLEM. TECHNICIANS TROUBLESHOT THE DISCREPANCY AND FOUND THE SMOKE DETECTOR HAD FAILED. MAINTENANCE REPLACED THE SMOKE DETECTOR IAW WITH ALL MAINTENANCE PROCEDURES. AIRCRAFT WAS THEN RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)