What was found
CARGO SMOKE LIGHT ILLUMINATED ON SHORT FINAL TO ATW, MEMORY ITEMS AND QRH COMPLETED, FIRE EXTINGUISHER ACTIVATED. MAINTENANCE REPLACED NR 1 SYSTEM RT AFT CARGO FIRE BOTTLE, PERFORMED OPS CHECKS, ALL CHECKS GOOD. CLEANED SMOKE DETECTOR AND CANNON PLUG AT DETECTORS, PERFORMED OPS CHECK OF SMOKE DETECTOR SYSTEM. CHECKS GOOD.