What was found
DESCENDING OUT AT APPROX 11000 MSL RECEIVED A LEVEL 3 CABIN SMOKE FOR 1 SEQUENCE OF THE WARNING; THEN APPROX 15-20 SECONDS LATER RECEIVED A SECOND LEVEL 3 CABIN SMOKE WARNING, AGAIN 1 SEQUENCE OF TROUBLESHOT PER FIM 26-15-01-00 BLOCKS 1,2,3,7 VISUALLY CHECKED DETECTORS AND FOUND NO FAULTS OR INTERFERENCE WITH FUNCTION, NO DETECTORS FAULTED DURING TEST BUT MSC WAS SHOWING FAULTS FROM LAST 2 LEGS, CHANGED MSC AMM 31-42-01 AND RAN RETURN TO SERVICE TEST, ALL TEST PASSED AND SYSTEM OPERATING NORMALLY